JP2006335933A - Polymer compound and polymer light-emitting element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polymer compound having excellent heat-resistance and useful as a light-emitting material and a charge transfer material. <P>SOLUTION: The polymer compound contains a structure expressed by formula (1) (rings A and B are each independently an aromatic hydrocarbon ring which may have substituents; and ring C is a ≥7C unsubstituted alicyclic hydrocarbon group which may contain hetero-atoms). The polymer light-emitting element has an organic layer containing the polymer compound and placed between a cathode and an anode. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a polymer compound and a polymer light-emitting device using the polymer compound.

High molecular weight light-emitting materials and charge transport materials have been studied in various ways because they are soluble in a solvent and can form an organic layer in a light-emitting element by a coating method. For example, as a repeating unit, a cyclopentadiene ring has two benzenes. A polymer compound having a structure in which a ring is condensed is known (for example, Non-Patent Document 1 and Patent Document 1).

Advanced Materials 1999 Vol. 9 No. 10 798 International Publication No. 99/54385 Pamphlet

However, the polymer compound has a problem that its heat resistance is not always sufficient.
An object of the present invention is to provide a polymer compound that is useful as a light-emitting material or a charge transport material and has excellent heat resistance.

（1）
〔式中、Ａ環およびＢ環はそれぞれ独立に、置換基を有していてもよい芳香族炭化水素環を表し、Ｃ環は、炭素数７以上の無置換の脂環式炭化水素環を表し、該脂環式炭化水素はヘテロ原子を含んでいてもよい。〕 That is, the present invention provides a polymer compound having a structure represented by the following formula (1).

(1)
[Wherein, A ring and B ring each independently represent an aromatic hydrocarbon ring which may have a substituent, and C ring represents an unsubstituted alicyclic hydrocarbon ring having 7 or more carbon atoms. And the alicyclic hydrocarbon may contain heteroatoms. ]

  The polymer compound of the present invention is useful as a light-emitting material or a charge transport material and has excellent heat resistance. In addition, device characteristics such as solubility, fluorescence characteristics, and luminance half-life can be improved. Therefore, the polymer LED containing the polymer compound of the present invention can be used for a curved or flat light source, a segment type display element, a dot matrix flat panel display, etc. for backlight or illumination of a liquid crystal display.

  The polymer compound of the present invention includes a structure represented by the formula (1).

（２）
［式中、Ａ環、Ｂ環およびＣ環は前記と同じ意味を表し、２つの結合手はそれぞれＡ環またはＢ環上に存在する。］ One preferred structure of the formula (1) is a structure represented by the following formula (2).

(2)
[Wherein, A ring, B ring and C ring have the same meaning as described above, and two bonds are present on A ring or B ring, respectively. ]

The structure represented by the formula (2) may be contained in the side chain when it is contained as a repeating unit when it is contained in the main chain of the polymer compound. From the viewpoint of device characteristics such as heat resistance, solubility, light emission characteristics, and luminance half-life, it is preferably contained as a repeating unit in the polymer compound. When the polymer compound of the present invention contains the structure represented by the formula (2) as a repeating unit, it is usually 1 mol% or more and 100 mol% or less of the total of all repeating units of the polymer compound of the present invention, It is preferably at least mol%, more preferably at least 30 mol% and at most 100 mol%.

（３）
［式中、Ａ環、Ｂ環およびＣ環は前記と同じ意味を表し、１つの結合手はＡ環またはＢ環上に存在する。］ Another preferred structure of the formula (1) is a structure represented by the following formula (3).

(3)
[Wherein, A ring, B ring and C ring have the same meaning as described above, and one bond exists on A ring or B ring. ]

The structure represented by the above formula (3) exists in the side chain or terminal of the polymer compound. In these cases, the repeating unit of the polymer compound may or may not contain the structure represented by the formula (2).

（４）
［式中、Ａ環、Ｂ環およびＣ環は前記と同じ意味を表し、３つの結合手はそれぞれＡ環またはＢ環上に存在する。］ Another preferred structure of the formula (1) is a structure represented by the following formula (4).

(4)
[Wherein, A ring, B ring and C ring have the same meaning as described above, and three bonds exist on A ring or B ring, respectively. ]

When the structure represented by the formula (4) is included, the polymer compound usually has a branched structure. When the formula (4) is included as a repeating unit, the repeating unit represented by the formula (4) is preferably 10 mol% or less, and preferably 1 mol% or less of all repeating units from the viewpoint of solubility and the like. It is more preferable.

As the structure represented by the formula (1), in addition to the formulas (2), (3), and (4), a structure in which four or more bonds exist on the A ring and the B ring, and a bond on the C ring. Examples include a structure in which one or more hands are present.

  In the formula (1), the A ring and the B ring each independently represent an aromatic hydrocarbon ring which may have a substituent, and from the viewpoint of heat resistance, fluorescence intensity, device characteristics, etc., at least 1 One is preferably an aromatic hydrocarbon ring in which two or more benzene rings are condensed. The aromatic hydrocarbon ring may be further condensed with an aromatic hydrocarbon ring other than a benzene ring and / or a non-aromatic hydrocarbon-based condensed ring.

In the formula (1), the aromatic hydrocarbon ring in the A ring and the aromatic hydrocarbon ring in the B ring may be the same or different from each other. From the viewpoint, the aromatic hydrocarbon ring in the A ring and the aromatic hydrocarbon ring in the B ring are preferably aromatic hydrocarbon rings having different ring structures.

  The aromatic hydrocarbon ring is preferably a benzene ring alone or condensed with two or more benzene rings. Examples thereof include benzene ring, naphthalene ring, anthracene ring, tetracene ring, pentacene ring, pyrene ring, phenanthrene ring. Aromatic hydrocarbon rings such as benzene ring, naphthalene ring, anthracene ring, and phenanthrene ring are preferable.

  The combination of A ring and B ring is preferably a combination of benzene ring and naphthalene ring, benzene ring and anthracene ring, benzene ring and phenanthrene ring, naphthalene ring and anthracene ring, naphthalene ring and phenanthrene ring, anthracene ring and phenanthrene ring. The combination of a benzene ring and a naphthalene ring is more preferable.

を平面構造式で表したときに、
Ａ環における芳香族炭化水素環と、Ｂ環におけるそれとが、構造式の中央の５員環の頂点と、頂点に対向する辺の中点とを結んだ対称軸（点線）に対して非対称であることをいう。 The aromatic hydrocarbon ring in the A ring and the aromatic hydrocarbon ring in the B ring are ring structures different from each other.
In equation (1)

Is represented by a planar structural formula,
The aromatic hydrocarbon ring in the A ring and that in the B ring are asymmetric with respect to the symmetry axis (dotted line) connecting the vertex of the center five-membered ring of the structural formula and the midpoint of the side facing the vertex. Say something.

の場合にはＡ環とＢ環とは環構造が異なる。

一方、Ａ環およびＢ環がナフタレン環であっても、

の場合にはＡ環とＢ環とは環構造が同じである。 For example, when A ring and B ring are naphthalene rings,

In the case of A, the ring structure is different between the A ring and the B ring.

On the other hand, even if the A ring and the B ring are naphthalene rings,

In the case of A, the ring structure of the A ring and the B ring is the same.

  Specific examples of the structure represented by the formula (2) include the following (1A-1 to 1A-64, 1B-1 to 1B-64, 1C-1 to 1C-64, 1D-1 to 1D-20) ) And those having a substituent in the following. In the following, the bond in the aromatic hydrocarbon ring represents that it can take any position of the A ring and the B ring. Ring C has the same meaning as described above.

  Specific examples of the structure represented by the formula (3) include the aforementioned structures (1A-1 to 1A-64, 1B-1 to 1B-64, 1C-1 to 1C-64, 1D-1 to 1D-20). And a structure in which one bond is deleted from the structure having a substituent in the structure described above. Specific examples of the structure represented by the formula (4) include the structures (1A-1 to 1A-64, 1B-1 to 1B-64, 1C-1 to 1C-64, 1D-1 to 1D described above. -20) and a structure in which one bond is added to the A ring or the B ring having a substituent in the structure described above.

〔式中、Ｒ_p1、Ｒ_q1、Ｒ_p2、Ｒ_q2、Ｒ_p3、Ｒ_q3、Ｒ_p4およびＲ_q4はそれぞれ独立に置換基を表す。ａは０〜３の整数を表し、ｂは０〜５の整数を表す。Ｒ_p1、Ｒ_q1、Ｒ_p2、Ｒ_q2、Ｒ_p3、Ｒ_q3、Ｒ_p4およびＲ_q4がそれぞれ複数個存在する場合、それらは同一でも異なっていてもよい。〕 In the structure represented by the above formula (2), from the viewpoint of heat resistance, fluorescence intensity and the like, preferably, two bonds are present on each of the A ring and the B ring, and more preferably, A ring and B ring consist of a combination of a benzene ring and a naphthalene ring. Especially, the structure shown by following formula (2-1), (2-2), (2-3), (2-4) is preferable, and the structure shown by Formula (2-1), (2-2) Is more preferable.

[Wherein, R _p1 , R _q1 , R _p2 , R _q2 , R _p3 , R _q3 , R _p4 and R _q4 each independently represent a substituent. a represents an integer of 0 to 3, and b represents an integer of 0 to 5. When there are a plurality of R _p1 , R _q1 , R _p2 , R _q2 , R _p3 , R _q3 , R _p4 and R _q4 , they may be the same or different. ]

From the viewpoints of solubility in organic solvents, device characteristics, ease of synthesis, etc., R _p1 , R _q1 , R _p2 , R _q2 , R _p3 , R _q3 , R _p4 and R _q4 are alkyl groups, alkoxy Group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, arylalkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen It is preferably one selected from an atom, an acyl group, an acyloxy group, an imine residue, an amide group, an acid imide group, a monovalent heterocyclic group, a carboxyl group, a substituted carboxyl group, a nitro group, and a cyano group. The hydrogen atom contained in these substituents may be replaced with a fluorine atom.

  Here, the alkyl group may be linear, branched or cyclic, and usually has about 1 to 20 carbon atoms, preferably 3 to 20 carbon atoms. Specific examples thereof include a methyl group, an ethyl group, and a propyl group. Group, i-propyl group, n-butyl group, i-butyl group, t-butyl group, pentyl group, isoamyl group, hexyl group, cyclohexyl group, heptyl group, octyl group, 2-ethylhexyl group, nonyl group, decyl group 3,7-dimethyloctyl group, lauryl group, trifluoromethyl group, pentafluoroethyl group, perfluorobutyl group, perfluorohexyl group, perfluorooctyl group, etc., solubility in organic solvents, device characteristics From the viewpoint of the ease of synthesis and the heat resistance, pentyl group, isoamyl group, hexyl group, octyl group, 2-ethylhexyl group Group, decyl group, 3,7-dimethyl octyl group are preferable.

  The alkoxy group may be linear, branched or cyclic, and usually has about 1 to 20 carbon atoms, preferably 3 to 20 carbon atoms. Specific examples thereof include a methoxy group, an ethoxy group, a propyloxy group, i-propyloxy group, butoxy group, i-butoxy group, t-butoxy group, pentyloxy group, hexyloxy group, cyclohexyloxy group, heptyloxy group, octyloxy group, 2-ethylhexyloxy group, nonyloxy group, decyloxy group 3,7-dimethyloctyloxy group, lauryloxy group, trifluoromethoxy group, pentafluoroethoxy group, perfluorobutoxy group, perfluorohexyl group, perfluorooctyl group, methoxymethyloxy group, 2-methoxyethyloxy group Etc., solubility in organic solvents, device characteristics, From the balance between the viewpoint and the heat resistance of the easiness of the formation, pentyloxy group, hexyloxy group, octyloxy group, 2-ethylhexyl group, decyloxy group, 3,7-dimethyl octyloxy group are preferable.

  The alkylthio group may be linear, branched or cyclic, and usually has about 1 to 20 carbon atoms, preferably 3 to 20 carbon atoms. Specific examples thereof include a methylthio group, an ethylthio group, a propylthio group, i -Propylthio group, butylthio group, i-butylthio group, t-butylthio group, pentylthio group, hexylthio group, cyclohexylthio group, heptylthio group, octylthio group, 2-ethylhexylthio group, nonylthio group, decylthio group, 3,7-dimethyl Octylthio group, laurylthio group, trifluoromethylthio group and the like. From the viewpoint of solubility in organic solvents, device characteristics, ease of synthesis and heat resistance, pentylthio group, hexylthio group, octylthio group, etc. Group, 2-ethylhexylthio group, decylthio group, 3,7-dimethyloctyl Lucio group is preferred.

An aryl group is an atomic group obtained by removing one hydrogen atom from an aromatic hydrocarbon, and having a condensed ring, two or more independent benzene rings or condensed rings bonded directly or through a group such as vinylene. Also included. The aryl group usually has about 6 to 60 carbon atoms, preferably 7 to 48 carbon atoms. Specific examples thereof include a phenyl group and a C _{1 to} C ₁₂ alkoxyphenyl group (C _{1 to} C ₁₂ have 1 to indicates a 12. the same applies is less.), C ₁ -C ₁₂ alkylphenyl group, 1-naphthyl, 2-naphthyl, 1-anthracenyl group, 9-anthracenyl group, penta A fluorophenyl group and the like are exemplified, and from the viewpoints of solubility in an organic solvent, device characteristics, easiness of synthesis, etc., a C _{1 to} C ₁₂ alkoxyphenyl group and a C _{1 to} C ₁₂ alkylphenyl group are preferable. Specific examples of C ₁ -C ₁₂ alkoxy include methoxy, ethoxy, propyloxy, i-propyloxy, butoxy, i-butoxy, t-butoxy, pentyloxy, hexyloxy, cyclohexyloxy, heptyloxy, octyloxy, 2 -Ethylhexyloxy, nonyloxy, decyloxy, 3,7-dimethyloctyloxy, lauryloxy and the like are exemplified.
C ₁ -C ₁₂ alkylphenyl group as specifically methylphenyl group, ethylphenyl group, dimethylphenyl group, propylphenyl group, mesityl group, methylethylphenyl group, i- propylphenyl group, butylphenyl group, i- butyl Examples include phenyl group, t-butylphenyl group, pentylphenyl group, isoamylphenyl group, hexylphenyl group, heptylphenyl group, octylphenyl group, nonylphenyl group, decylphenyl group, dodecylphenyl group and the like.

The aryloxy group usually has about 6 to 60 carbon atoms, preferably 7 to 48, and specific examples thereof include phenoxy group, C _{1 to} C ₁₂ alkoxyphenoxy group, C _{1 to} C ₁₂ alkylphenoxy group, 1 - naphthyloxy group, 2-naphthyloxy group, are exemplified such as pentafluorophenyl group is, solubility in organic solvents, device properties, from the standpoint of easiness of synthesis, C ₁ -C ₁₂ alkoxy phenoxy group , C ₁ -C ₁₂ alkylphenoxy group are preferable.
Specific examples of C ₁ -C ₁₂ alkoxy include methoxy, ethoxy, propyloxy, i-propyloxy, butoxy, i-butoxy, t-butoxy, pentyloxy, hexyloxy, cyclohexyloxy, heptyloxy, octyloxy, 2 -Ethylhexyloxy, nonyloxy, decyloxy, 3,7-dimethyloctyloxy, lauryloxy and the like are exemplified.
C ₁ -C ₁₂ alkylphenoxy such as methyl phenoxy groups as group, ethylphenoxy group, dimethylphenoxy group, propylphenoxy group, 1,3,5-methylphenoxy group, methylethylphenoxy group, i- propyl phenoxy group, Examples include butylphenoxy, i-butylphenoxy, t-butylphenoxy, pentylphenoxy, isoamylphenoxy, hexylphenoxy, heptylphenoxy, octylphenoxy, nonylphenoxy, decylphenoxy, dodecylphenoxy Is done.

Arylthio group has a carbon number of usually about 3 to 60, and specific examples thereof include a phenylthio group, C ₁ -C ₁₂ alkoxyphenyl-thio group, C ₁ -C ₁₂ alkyl phenylthio group, 1-naphthylthio group, 2 - naphthylthio group, are exemplified such as pentafluorophenyl thio group, solubility in organic solvents, device properties, from the standpoint of easiness of synthesis, C ₁ -C ₁₂ alkoxyphenyl-thio group, C ₁ -C ₁₂ An alkylphenylthio group is preferred.

The arylalkyl group usually has about 7 to 60 carbon atoms, preferably 7 to 48, and specific examples thereof include a phenyl-C ₁ -C ₁₂ alkyl group and a C ₁ -C ₁₂ alkoxyphenyl-C ₁ -C. ₁₂ alkyl group, C ₁ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ alkyl group, 1-naphthyl -C ₁ -C ₁₂ alkyl group, 2-naphthyl -C ₁ -C ₁₂ alkyl groups and the like, organic solvents From the viewpoints of solubility in water, device characteristics, easiness of synthesis, etc., C ₁ -C ₁₂ alkoxyphenyl-C ₁ -C ₁₂ alkyl group, C ₁ -C ₁₂ alkylphenyl-C ₁ -C ₁₂ alkyl group Is preferred.

The arylalkoxy group usually has about 7 to 60 carbon atoms, preferably 7 to 48 carbon atoms. Specific examples thereof include a phenylmethoxy group, a phenylethoxy group, a phenylbutoxy group, a phenylpentyloxy group, and a phenylhexyloxy group. group, phenyl heptene Ciro alkoxy group, a phenyl -C ₁ -C ₁₂ alkoxy groups such as phenyl Ok Ciro alkoxy group, C ₁ -C ₁₂ alkoxyphenyl -C ₁ -C ₁₂ alkoxy group, C ₁ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ alkoxy groups, 1-naphthyl -C ₁ -C ₁₂ alkoxy groups, are exemplified 2-naphthyl -C ₁ -C ₁₂ alkoxy group, solubility in organic solvents, device properties, synthesis easiness from the point of view, C ₁ -C ₁₂ alkoxyphenyl -C ₁ -C ₁₂ alkoxy group, a C ₁ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ alkoxy group preferably .

The arylalkylthio group usually has about 7 to 60 carbon atoms, preferably 7 to 48 carbon atoms. Specific examples thereof include a phenyl-C ₁ -C ₁₂ alkylthio group and a C ₁ -C ₁₂ alkoxyphenyl-C _1. -C ₁₂ alkylthio group, C ₁ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ alkylthio group, 1-naphthyl -C ₁ -C ₁₂ alkylthio group, 2-naphthyl -C ₁ -C ₁₂ alkylthio groups and the like, From the viewpoint of solubility in organic solvent, device characteristics, easiness of synthesis, etc., C ₁ -C ₁₂ alkoxyphenyl-C ₁ -C ₁₂ alkylthio group, C ₁ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ Alkylthio groups are preferred.

Arylalkenyl group has a carbon number of usually about 8 to 60, and examples thereof include phenyl -C ₂ -C ₁₂ alkenyl group, C ₁ -C ₁₂ alkoxyphenyl -C ₂ -C ₁₂ alkenyl group, C ₁ -C ₁₂ alkylphenyl-C ₂ -C ₁₂ alkenyl group, 1-naphthyl-C ₂ -C ₁₂ alkenyl group, 2-naphthyl-C ₂ -C ₁₂ alkenyl group, etc., and solubility in organic solvents, device properties, from the standpoint of easiness of synthesis, C ₁ -C ₁₂ alkoxyphenyl -C ₂ -C ₁₂ alkenyl group, a C ₂ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ alkenyl group are preferred.

Arylalkynyl group has a carbon number of usually about 8 to 60, and examples thereof include phenyl -C ₂ -C ₁₂ alkynyl group, C ₁ -C ₁₂ alkoxyphenyl -C ₂ -C ₁₂ alkynyl group, C ₁ -C ₁₂ alkylphenyl -C ₂ -C ₁₂ alkynyl group, 1-naphthyl -C ₂ -C ₁₂ alkynyl group, 2-naphthyl -C ₂ -C ₁₂ alkynyl groups and the like, solubility in organic solvents, device From the viewpoints of characteristics, easiness of synthesis, etc., a C _{1 to} C ₁₂ alkoxyphenyl-C _{2 to} C ₁₂ alkynyl group and a C _{1 to} C ₁₂ alkylphenyl-C _{2 to} C ₁₂ alkynyl group are preferable.

Examples of the substituted amino group include an amino group substituted with one or two groups selected from an alkyl group, an aryl group, an arylalkyl group, or a monovalent heterocyclic group. The alkyl group, aryl group, arylalkyl The group or the monovalent heterocyclic group may have a substituent. The carbon number of the substituted amino group is usually about 1 to 60, preferably 2 to 48, not including the carbon number of the substituent.
Specifically, methylamino group, dimethylamino group, ethylamino group, diethylamino group, propylamino group, dipropylamino group, i-propylamino group, diisopropylamino group, butylamino group, i-butylamino group, t -Butylamino group, pentylamino group, hexylamino group, cyclohexylamino group, heptylamino group, octylamino group, 2-ethylhexylamino group, nonylamino group, decylamino group, 3,7-dimethyloctylamino group, laurylamino group, cyclopentylamino group, dicyclopentylamino group, cyclohexylamino group, dicyclohexylamino group, pyrrolidyl group, piperidyl group, ditrifluoromethylamino group, phenylamino group, diphenylamino group, C ₁ -C ₁₂ alkoxyphenyl amino group, di (C ₁ -C ₁₂ alkoxyphenyl) amino group, di (C ₁ -C ₁₂ alkylphenyl) amino groups, 1-naphthylamino group, 2-naphthylamino group, pentafluorophenylamino group, pyridylamino group, pyridazinylamino group , pyrimidylamino group, Pirajiruamino group, triazyl amino group phenyl -C ₁ -C ₁₂ alkylamino group, C ₁ -C ₁₂ alkoxyphenyl -C ₁ -C ₁₂ alkylamino group, C ₁ -C ₁₂ alkylphenyl -C ₁ ~ C ₁₂ alkylamino groups, di (C ₁ -C ₁₂ alkoxyphenyl -C ₁ -C ₁₂ alkyl) amino group, di (C ₁ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ alkyl) amino groups, 1-naphthyl - C ₁ -C ₁₂ alkylamino group, 2-naphthyl -C ₁ -C ₁₂ alkylamino groups.

Examples of the substituted silyl group include a silyl group substituted with 1, 2 or 3 groups selected from an alkyl group, an aryl group, an arylalkyl group or a monovalent heterocyclic group. The substituted silyl group usually has about 1 to 60 carbon atoms, preferably 3 to 48 carbon atoms. The alkyl group, aryl group, arylalkyl group or monovalent heterocyclic group may have a substituent.
Specifically, trimethylsilyl group, triethylsilyl group, tripropylsilyl group, tri-i-propylsilyl group, dimethyl-i-propylsilyl group, diethyl-i-propylsilyl group, t-butylsilyldimethylsilyl group, pentyldimethyl Silyl group, hexyldimethylsilyl group, heptyldimethylsilyl group, octyldimethylsilyl group, 2-ethylhexyl-dimethylsilyl group, nonyldimethylsilyl group, decyldimethylsilyl group, 3,7-dimethyloctyl-dimethylsilyl group, lauryldimethylsilyl group, a phenyl -C ₁ -C ₁₂ alkylsilyl group, C ₁ -C ₁₂ alkoxyphenyl -C ₁ -C ₁₂ alkylsilyl group, C ₁ -C ₁₂ alkylphenyl -C ₁ -C ₁₂ alkylsilyl group, 1-naphthyl -C ₁ -C ₁₂ alkylsilyl group, 2-naphthyl C ₁ -C ₁₂ alkylsilyl group, a phenyl -C ₁ -C ₁₂ alkyldimethylsilyl group, triphenylsilyl group, tri -p- Kishirirushiriru group, tribenzylsilyl group, diphenylmethylsilyl group, t- butyl diphenyl silyl group, Examples thereof include a dimethylphenylsilyl group.

  Examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.

  The acyl group usually has about 2 to 20 carbon atoms, preferably 2 to 18 carbon atoms. Specific examples thereof include acetyl group, propionyl group, butyryl group, isobutyryl group, pivaloyl group, benzoyl group, trifluoroacetyl group. Group, pentafluorobenzoyl group and the like.

  The acyloxy group usually has about 2 to 20 carbon atoms, preferably 2 to 18 carbon atoms. Specific examples thereof include an acetoxy group, a propionyloxy group, a butyryloxy group, an isobutyryloxy group, a pivaloyloxy group, a benzoyloxy group. Group, trifluoroacetyloxy group, pentafluorobenzoyloxy group and the like.

As the imine residue, an imine compound (refers to an organic compound having —N═C— in the molecule. For example, aldimine, ketimine, and hydrogen atoms on these N are substituted with alkyl groups or the like. And a residue obtained by removing one hydrogen atom from the compound, usually having about 2 to 20 carbon atoms, preferably 2 to 18 carbon atoms. Specific examples include groups represented by the following structural formulas.

  The amide group usually has about 2 to 20 carbon atoms, preferably 2 to 18 carbon atoms. Specific examples thereof include formamide group, acetamide group, propioamide group, butyroamide group, benzamide group, trifluoroacetamide group, penta Examples include a fluorobenzamide group, a diformamide group, a diacetamide group, a dipropioamide group, a dibutyroamide group, a dibenzamide group, a ditrifluoroacetamide group, a dipentafluorobenzamide group, and the like.

Examples of the acid imide group include residues obtained by removing a hydrogen atom bonded to the nitrogen atom from an acid imide, having about 4 to 20 carbon atoms, and specific examples include the groups shown below. The

The monovalent heterocyclic group refers to a remaining atomic group obtained by removing one hydrogen atom from a heterocyclic compound, and usually has about 4 to 60 carbon atoms, preferably 4 to 20 carbon atoms. The carbon number of the heterocyclic group does not include the carbon number of the substituent. Here, the heterocyclic compound is an organic compound having a cyclic structure in which the elements constituting the ring include not only carbon atoms but also heteroatoms such as oxygen, sulfur, nitrogen, phosphorus, boron, and silicon in the ring. Say things. Specifically, a thienyl group, C ₁ -C ₁₂ alkyl thienyl group, a pyrrolyl group, a furyl group, a pyridyl group, C ₁ -C ₁₂ alkyl pyridyl group, piperidyl group, quinolyl group, isoquinolyl group and the like, a thienyl group , C ₁ -C ₁₂ alkyl thienyl group, a pyridyl group, a C ₁ -C ₁₂ alkyl pyridyl group are preferable.

  Examples of the substituted carboxyl group include a carboxyl group substituted with an alkyl group, an aryl group, an arylalkyl group or a monovalent heterocyclic group, and usually has about 2 to 60 carbon atoms, preferably 2 to 48 carbon atoms. Specific examples thereof include methoxycarbonyl group, ethoxycarbonyl group, propoxycarbonyl group, i-propoxycarbonyl group, butoxycarbonyl group, i-butoxycarbonyl group, t-butoxycarbonyl group, pentyloxycarbonyl group, hexyloxycarbonyl group. Cyclohexyloxycarbonyl group, heptyloxycarbonyl group, octyloxycarbonyl group, 2-ethylhexyloxycarbonyl group, nonyloxycarbonyl group, decyloxycarbonyl group, 3,7-dimethyloctyloxycarbonyl group, dodecyloxycal Nyl group, trifluoromethoxycarbonyl group, pentafluoroethoxycarbonyl group, perfluorobutoxycarbonyl group, perfluorohexyloxycarbonyl group, perfluorooctyloxycarbonyl group, phenoxycarbonyl group, naphthoxycarbonyl group, pyridyloxycarbonyl group, etc. Is mentioned. The alkyl group, aryl group, arylalkyl group or monovalent heterocyclic group may have a substituent. The carbon number of the substituted carboxyl group does not include the carbon number of the substituent.

  From the viewpoint of increasing the molecular weight and improving the heat resistance, the aromatic hydrocarbon ring preferably has no substituent.

  When the aromatic hydrocarbon ring has a substituent such as an alkyl group, the chemical stability of the polymer compound can be enhanced. In the case where an atom close to a bond has a substituent, the reaction may be sterically suppressed during polymerization. Therefore, it is preferable that the atom is substituted at a position two or more away from the bond in the form of aromatic carbon.

〔式中、Ｃ環は前記と同様の意味である。〕 From the viewpoint of the balance between the chemical stability and the small influence of suppressing the polymerization reaction, in the structure of the formula (2-1), (2-2), (2-3) or (2-4) A = 0, b = 1 are preferable, a structure represented by the following formula (2-1-1) or (2-1-2) is more preferable, and R _q1 is an alkyl group. Is more preferable.

[Wherein, ring C has the same meaning as described above. ]

Here, the alkyl group in R _q1 usually has 1 to 30 carbon atoms, preferably 3 to 30 carbon atoms. The types of alkyl groups are methyl, ethyl, propyl, butyl, hexyl, heptyl, octyl, nonyl, decyl, lauryl, trifluoromethyl, pentafluoroethyl, perfluorobutyl. Group, linear alkyl group such as perfluorohexyl group, perfluorooctyl group, i-propyl group, i-butyl group, t-butyl group, pentyl group, isoamyl group, 2-ethylhexyl group, 3,7-dimethyl Branched alkyl groups such as octyl group, 1,1-dimethylpropyl group, 1-adamantyl group, 1-adamantylmethyl group, 2-adamantyl group, neopentyl group, cyclopentyl group, cyclopentylmethyl group, cyclohexyl group, cyclohexylmethyl group, Cyclohexylethyl group, cyclooctyl group, cyclododecyl group, Black pentadecyl group, an alkyl group having a cyclic structure such as cyclopentylmethyl group.

  Among the alkyl groups, from the viewpoint of chemical stability, an alkyl group having a branched structure or a cyclic structure is preferable, an alkyl group having a cyclic structure is more preferable, and a 1-adamantyl group or 2-adamantyl group is preferable. More preferably, it is a group.

  In the formula (1), the C ring represents an unsubstituted alicyclic hydrocarbon ring having 7 or more carbon atoms. The alicyclic hydrocarbon may contain a hetero atom. Examples of the hetero atom include nitrogen, oxygen, sulfur, boron, silicon, phosphorus, selenium and the like. Nitrogen, oxygen, sulfur, and silicon are preferable from the viewpoints of easiness of synthesis and device characteristics. Further, the number of carbon atoms to be replaced is preferably 2 or less, more preferably 1 or less, and even more preferably 1 is not replaced.

Specific examples of the C ring [represented as the structure of the formula (1)] include alicyclic hydrocarbons corresponding to the C ring of the following structure. The alicyclic hydrocarbon does not have a substituent or a condensed aromatic hydrocarbon.

なお、上記において、Ｃ環内の数字は、Ｃ環の環を構成する炭素原子の数を表す。
例えば、該数字が９の場合、Ｃ環は、シクロノナン環である。

In addition, in the above, the number in C ring represents the number of the carbon atoms which comprise the ring of C ring.
For example, when the number is 9, the C ring is a cyclononane ring.

  The alicyclic hydrocarbon ring corresponding to the C ring may contain an unsaturated bond. Specifically, in the specific example of the C ring, there is a structure in which one or more carbon-carbon single bonds (—C—C—) are replaced with carbon-carbon double bonds (—C═C—). . From the viewpoint of solubility, fluorescence characteristics, device characteristics, etc., the number of carbon-carbon double bonds in the C ring is preferably 2 or less, more preferably 1 or less, and carbon-carbon double bonds. More preferably it does not contain any bonds.

Specific examples of the structure in which the C ring is an alicyclic hydrocarbon ring having 8 carbon atoms and containing an unsaturated bond include the following structures.

Specific examples in the case where the C ring is an alicyclic hydrocarbon ring having 7 carbon atoms and containing an unsaturated bond, and when the C ring is an alicyclic hydrocarbon ring having 9 or more carbon atoms and containing an unsaturated bond As the structure, a structure containing one or more carbon-carbon double bonds is exemplified as in the above structure.

Specific examples of the structure in which the C ring is an alicyclic hydrocarbon ring having 7 carbon atoms and includes a hetero atom include the following structures.

  The alicyclic hydrocarbon ring corresponding to the C ring having a hetero atom may contain an unsaturated bond. Specifically, a structure in which one or more carbon-carbon single bonds (—C—C—) are replaced by carbon-carbon double bonds (—C═C—), one or more carbon-nitrogen single bonds ( -C-N-) is replaced with a carbon-nitrogen double bond (-C = N-), and one or more carbon-silicon single bonds (-C-Si-) are carbon-silicon double bonds (- C = Si-). From the viewpoint of solubility and device characteristics, the number of double bonds in the C ring is preferably 2 or less, more preferably 1 or less, and even more preferably no double bond.

  As the structure in which the C ring is an alicyclic hydrocarbon ring having 8 or more carbon atoms and includes a hetero atom, the C ring includes at least one oxygen, sulfur, nitrogen, or silicon atom in the C ring. Structure.

  The polymer compound of the present invention is characterized by excellent heat resistance. In the formula (1), in addition to the A ring and the B ring, having a C ring increases the glass transition temperature of the polymer compound.

（１−Ａ）
In order for the C ring to suppress the interaction between the polymer chains, it is preferable that the C ring is wide in the direction perpendicular to the skeleton plane. By suppressing the interaction, fluorescence intensity and solubility can be increased. In the compound of the following formula (1-A), as a calculation method for estimating the expansion of the C ring in the direction perpendicular to the skeleton plane, the structure of the monomer unit is optimized by a semi-empirical molecular orbital method, , In the vertical direction of the atoms (H) constituting the C ring with respect to the plane formed by three points of the bonding positions α and β of the A ring and the B ring and the bonding positions γ of the A ring and the B ring on the C ring There is a method to calculate the maximum spread width. At that time, since there are a plurality of stable conformations in the C ring, all of them are calculated, and the most stable conformation among them is extracted, and the one with a generated heat difference within 3 kcal / mol is extracted from it. The average value can be compared. The semi-empirical molecular orbital method used here is the AM1 method (Dewar, MJS et al, J. Am. Chem. Soc., 107, 3902 (1985)), and a molecular orbital calculation program. , WinMOPAC3.5 Professional (MOPAC2000 V1.3) (keyword: AM1 PRECISE EF VECTORS).

(1-A)

  The polymer compound of the present invention is expected to have a longer thickness in the direction perpendicular to the skeleton plane of the polymer compound when the C ring has 7 or more carbon atoms. From the viewpoint of the thickness in the direction perpendicular to the skeleton plane, the C ring preferably has 7 or more carbon atoms, more preferably 8 or more. Further, from the viewpoint of ease of synthesis, the number of carbon-carbon double bonds of the C ring is preferably 2 or less, more preferably 1 or less, including a double bond. More preferably not. The ring C preferably has 20 or less carbon atoms.

  As the polymer compound of the present invention, the polymer compound composed of the repeating unit represented by the formula (2) is a polymer composed substantially only of the repeating unit represented by the formula (2) as the repeating unit. Although it refers to a compound, the polymer compound may contain a structure or the like resulting from impurities contained in the raw material monomer. The same applies to “consisting of repeating units represented by (2-1), (2-2), (2-3) and (2-4)”. Among the polymer compounds composed of the repeating units represented by the formula (2), the formulas (2-1), (2-2), (2-3), ( The polymer compound consisting of the repeating unit represented by 2-4) is preferred, the polymer compound comprising the repeating unit represented by (2-1) and (2-2) is more preferred, and represented by (2-1). A polymer compound composed of repeating units is more preferred.

Among the polymer compounds of the present invention, the polymer compound composed of two types of repeating units represented by the formula (2) includes two types of repeating units, excluding the C ring and substituents of the repeating units. The same ring structure, the presence or absence of a substituent on the aromatic ring, the type of substituent, and the type of C ring are two types of repeating units (referred to as repeating units (a) and (b)). What is a polymer is mentioned. This copolymer can be more soluble in an organic solvent than a homopolymer consisting only of the repeating unit (a) and a homopolymer consisting only of the repeating unit (b). Specifically, two types of copolymers selected from the formula (2-1), two types of copolymers selected from the formula (2-2), and formula (2-3) are selected. And two kinds of copolymers selected from the above formula (2-4). Among the polymer compounds composed of two types of repeating units represented by the formula (2), from the viewpoint of heat resistance, fluorescence intensity, etc., the two types of the formulas (2-1), (2-2), A polymer compound composed of repeating units represented by (2-3) and (2-4) is preferred, and a polymer compound composed of two types of repeating units represented by (2-1) and (2-2) is more preferred. A polymer compound composed of two types of repeating units represented by (2-1) is more preferable.
Among these, from the viewpoint of ease of control of reactivity during the production of the polymer compound, as (a) and (b), there are no substituents on the aromatic ring or the substituents on the aromatic ring are the same. There are preferred copolymers having different C ring types.

The polymer compound of the present invention has the repeating unit (2) from the viewpoint of changing the emission wavelength, the viewpoint of increasing the luminous efficiency, the viewpoint of improving the heat resistance, and the like. A copolymer containing one or more repeating units is preferred. The repeating unit other than the repeating unit (2) is preferably a repeating unit represented by the following formula (5), formula (6), formula (7) or formula (8).
-Ar _1- (5)
_{- (- Ar 2 -X 1 -} ) ff -Ar 3 - (6)
—Ar ₄ —X ₂ — (7)
-X _3- (8)

In the formula, Ar ₁ , Ar ₂ , Ar ₃ and Ar ₄ each independently represent an arylene group, a divalent heterocyclic group or a divalent group having a metal complex structure. X ₁ , X ₂ and X ₃ each independently represent —CR ₉ ═CR ₁₀ —, —C≡C—, —N (R ₁₁ ) —, or — (SiR ₁₂ R ₁₃ ) _m —. R ₉ and R ₁₀ each independently represent a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, a carboxyl group, a substituted carboxyl group or a cyano group. R ₁₁ , R ₁₂ and R ₁₃ each independently represent a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, an arylalkyl group or a group containing a substituted amino group. ff represents 1 or 2. m shows the integer of 1-12. When there are a plurality of R ₉ , R ₁₀ , R ₁₁ , R ₁₂ and R ₁₃ , they may be the same or different.

Here, the arylene group is an atomic group obtained by removing two hydrogen atoms from an aromatic hydrocarbon, and those having a condensed ring, two or more independent benzene rings or condensed rings are directly or a group such as vinylene. The thing couple | bonded through is also included. The arylene group may have a substituent.
Examples of the substituent include an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, and a substituted amino group. Silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group, and cyano group.
Carbon number of the part except the substituent in an arylene group is about 6-60 normally, Preferably it is 6-20. Moreover, the total carbon number including the substituent of an arylene group is about 6-100 normally.
Examples of the arylene group include a phenylene group (for example, formulas 1 to 3 in the following figure), a naphthalenediyl group (formulas 4 to 13 in the following figure), an anthracene-diyl group (formulas 14 to 19 in the following figure), and a biphenyl-diyl group (in the following figure). Formulas 20 to 25), fluorene-diyl groups (formulas 36 to 38 in the following diagram), terphenyl-diyl groups (formulas 26 to 28 in the diagram below), condensed ring compound groups (formulas 29 to 35 in the diagram below), stilbene-diyl ( Examples are formulas A to D) and distilben-diyl (formulas E and F below). Of these, a phenylene group, a biphenylene group, a fluorene-diyl group, and a stilbene-diyl group are preferable.

The divalent heterocyclic group in Ar ₁ , Ar ₂ , Ar _3, and Ar ₄ refers to the remaining atomic group obtained by removing two hydrogen atoms from the heterocyclic compound, and the group has a substituent. May be.
Here, the heterocyclic compound is an organic compound having a cyclic structure, and the elements constituting the ring include not only carbon atoms but also hetero atoms such as oxygen, sulfur, nitrogen, phosphorus, boron, and arsenic in the ring. Say things. Of the divalent heterocyclic groups, an aromatic heterocyclic group is preferable.
Examples of the substituent include an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, and a substituted amino group. Silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group, and cyano group.
Carbon number of the part except the substituent in a bivalent heterocyclic group is about 3-60 normally. Moreover, the total carbon number including the substituent of a bivalent heterocyclic group is about 3-100 normally.

Examples of the divalent heterocyclic group include the following.
Divalent heterocyclic group containing nitrogen as a hetero atom; pyridine-diyl group (formula 39 to 44 in the following figure), diazaphenylene group (formula 45 to 48 in the figure below), quinoline diyl group (formula 49 to 63 in the figure below), quinoxaline Diyl groups (formulas 64 to 68 in the lower figure), acridine diyl groups (formulas 69 to 72 in the lower figure), bipyridyldiyl groups (formulas 73 to 75 in the lower figure), phenanthroline diyl groups (formulas 76 to 78 in the lower figure), and the like.
Groups having a fluorene structure containing oxygen, silicon, nitrogen, selenium and the like as a hetero atom (formulas 79 to 93 in the following figure).
5-membered heterocyclic groups containing oxygen, silicon, nitrogen, sulfur, selenium and the like as a hetero atom: (formulae 94 to 98 in the following figure).
5-membered ring condensed hetero groups containing oxygen, silicon, nitrogen, selenium and the like as a hetero atom (formula 99 to 110 in the following figure).
A 5-membered ring heterocyclic group containing oxygen, silicon, nitrogen, sulfur, selenium or the like as a heteroatom, and bonded to the α-position of the heteroatom to form a dimer or oligomer: (Formulas 111 to 112 in the following figure) ).
5-membered ring heterocyclic groups containing oxygen, silicon, nitrogen, sulfur, selenium, etc. as heteroatoms, which are bonded to the phenyl group at the α-position of the heteroatoms: (formulas 113 to 119 in the figure below) .
Examples include groups in which a phenyl group, a furyl group, or a thienyl group is substituted on a 5-membered condensed heterocyclic group containing oxygen, nitrogen, sulfur, and the like as a hetero atom (formulas 120 to 125 in the following figure).

The divalent group having a metal complex structure in Ar ₁ , Ar ₂ , Ar ₃ and Ar ₄ is the remaining 2 obtained by removing two hydrogen atoms from the organic ligand of the metal complex having an organic ligand. Is a valent group.
The organic ligand usually has about 4 to 60 carbon atoms. Examples thereof include 8-quinolinol and derivatives thereof, benzoquinolinol and derivatives thereof, 2-phenyl-pyridine and derivatives thereof, and 2-phenyl-benzo. Examples include thiazole and its derivatives, 2-phenyl-benzoxazole and its derivatives, porphyrin and its derivatives.
Examples of the central metal of the complex include aluminum, zinc, beryllium, iridium, platinum, gold, europium, and terbium.
Examples of the metal complex having an organic ligand include a low-molecular fluorescent material, a metal complex known as a phosphorescent material, and a triplet light-emitting complex.

Specific examples of the divalent group having a metal complex structure include the following (126 to 132).

In the above formulas 1 to 132, each R is independently a hydrogen atom, alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group. , Arylalkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substitution A carboxyl group, a nitro group or a cyano group is shown. Moreover, the carbon atom which the group of Formula 1-132 has may be substituted with the nitrogen atom, the oxygen atom, or the sulfur atom, and the hydrogen atom may be substituted with the fluorine atom.
Here, alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, arylalkynyl group, substituted amino group, substituted silyl group, Definitions, specific examples, and preferred examples of a halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, and substituted carboxyl group include the aromatic hydrocarbon ring having a substituent. It is the same as those in the case of having.

（９）
〔式中、Ａ環およびＢ環は前述と同様であり、２つの結合手はそれぞれＡ環またはＢ環上に存在し、Ｒｗ₁およびＲｘ₁はそれぞれ独立に置換基を表す。〕
Ｒｗ₁およびＲｘ₁としては、水素原子、アルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基、ニトロ基またはシアノ基が好ましく、前述のＡ環およびＢ環が有する置換基と同様の基が例示される。なお、Ｒｗ₁とＲｘ₁がそれぞれ互いに結合して環を形成することはない。

（１０）
〔式中、Ａ環およびＢ環は前述と同様であり、２つの結合手はそれぞれＡ環またはＢ環上に存在し、Ｚは−Ｏ−、−Ｓ−、−Ｓ（＝Ｏ）−、−Ｓ（＝Ｏ）（＝Ｏ）−、−Ｎ（Ｒｗ₂）−、−Ｓｉ（Ｒｗ₂）（Ｒｘ₂）−、−Ｐ（＝Ｏ）（Ｒｗ₂）−、−Ｐ（Ｒｗ₂）−、−Ｂ（Ｒｗ₂）−、−Ｃ（Ｒｗ₂）（Ｒｘ₂）−Ｏ−、−Ｃ（Ｒｗ₂）＝Ｎ−、−Ｓｅ−を表す。Ｒｗ₂およびＲｘ₂はそれぞれ独立に置換基を表す。〕
Ｒｗ₂およびＲｘ₂としては、水素原子、アルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基、ニトロ基またはシアノ基が好ましく、Ａ環およびＢ環が有する置換基と同様の基が例示される。 From the viewpoint of solubility, device characteristics, etc., the preferred repeating unit represented by the formula (5) is preferably a repeating unit represented by the following formula (9) or the following formula (10).

(9)
[Wherein, A ring and B ring are the same as described above, and two bonds are present on A ring or B ring, respectively, and Rw ₁ and Rx ₁ each independently represent a substituent. ]
Rw ₁ and Rx ₁ include a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, Amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group, nitro group Or a cyano group is preferable and the group similar to the substituent which the above-mentioned A ring and B ring have is illustrated. Rw ₁ and Rx ₁ are not bonded to each other to form a ring.

(10)
[Wherein, the A ring and the B ring are the same as described above, the two bonds are present on the A ring or the B ring, respectively, Z is —O—, —S—, —S (═O) —, -S (= O) (= O ) -, - N (Rw 2) -, - Si (Rw 2) (Rx 2) -, - P (= O) (Rw 2) -, - P (Rw 2) _{-, - B (Rw 2)} -, - C (Rw 2) (Rx 2) -O -, - C (Rw 2) = N -, - representing the Se-. Rw ₂ and Rx ₂ each independently represent a substituent. ]
The rw ₂ and Rx _2, a hydrogen atom, an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, arylalkynyl group, Amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group, nitro group Or a cyano group is preferable and the group similar to the substituent which A ring and B ring have is illustrated.

Specific examples of the repeating unit represented by the formula (9) include the following structures (1F-1 to 1F-73) and structures having substituents in the following structures. Examples of the type of substituent include the same groups as the substituents of the aforementioned A ring and B ring.

Specific examples of the repeating unit represented by the formula (1-E) include the following structures (1G-1 to 1G-12) and structures having substituents in the following structures. Examples of the type of substituent include the same groups as the substituents of the aforementioned A ring and B ring.

〔式中、Ｒ₁₄は、アルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。ｎは０〜４の整数を表す。Ｒ₁₄が複数存在する場合、それらは同一でも異なっていてもよい。〕

〔式中、Ｒ₁₅およびＲ₁₆は、それぞれ独立にアルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。ｏおよびｐはそれぞれ独立に０〜３の整数を表す。Ｒ₁₇およびＲ₁₆がそれぞれ複数存在する場合、それらは同一でも異なっていてもよい。〕

〔式中、Ｒ₁₇およびＲ₂₀は、それぞれ独立にアルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。ｑおよびｒはそれぞれ独立に０〜４の整数を表す。Ｒ₁₈およびＲ₁₉は、それぞれ独立に水素原子、アルキル基、アリール基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。Ｒ₁₇およびＲ₂₀がそれぞれ複数存在する場合、それらは同一でも異なっていてもよい。〕

〔式中、Ｒ₂₁は、アルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。ｓは０〜２の整数を表す。Ａｒ₁₃およびＡｒ₁₄はそれぞれ独立にアリーレン基、２価の複素環基または金属錯体構造を有する２価の基を表す。ｓｓおよびｔｔはそれぞれ独立に０または１を表す。Ｘ₄は、Ｏ、Ｓ、ＳＯ、ＳＯ₂、ＳｅまたはＴｅを表す。Ｒ₂₁が複数存在する場合、それらは同一でも異なっていてもよい。〕

〔式中、Ｒ₂₂およびＲ₂₃は、それぞれ独立にアルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。ｔおよびｕはそれぞれ独立に０〜４の整数を表す。Ｘ₅は、Ｏ、Ｓ、ＳＯ₂、Ｓｅ，Ｔｅ、Ｎ−Ｒ₂₄、またはＳｉＲ₂₅Ｒ₂₆を表す。Ｘ₆およびＸ₇は、それぞれ独立にＮまたはＣ−Ｒ₂₇を表す。Ｒ₂₄、Ｒ₂₅、Ｒ₂₆およびＲ₂₇はそれぞれ独立に水素原子、アルキル基、アリール基、アリールアルキル基または１価の複素環基を表す。Ｒ₂₂、Ｒ₂₃およびＲ₂₇がそれぞれ複数存在する場合、それらは同一でも異なっていてもよい。〕

〔式中、Ｒ₂₈およびＲ₃₃は、それぞれ独立にアルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。ｖおよびｗはそれぞれ独立に０〜４の整数を表す。Ｒ₂₉、Ｒ₃₀、Ｒ₃₁およびＲ₃₂は、それぞれ独立に水素原子、アルキル基、アリール基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。Ａｒ₅はアリーレン基、２価の複素環基または金属錯体構造を有する２価の基を表す。Ｒ₂₈およびＲ₃₃がそれぞれ複数存在する場合、それらは同一でも異なっていてもよい。〕

〔式中、Ｒ₃₄は、アルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、ハロゲン原子、アシル基、アシルオキシ基、イミン残基、アミド基、酸イミド基、１価の複素環基、カルボキシル基、置換カルボキシル基またはシアノ基を表す。ｕｕは０〜４の整数を表す。Ｒ₃₄が複数存在する場合、それらは同一でも異なっていてもよい。〕 As an arylene group which is a preferable repeating unit represented by the formula (5), in addition to the repeating units represented by the formulas (9) and (10), the following formula (11), formula (12), and formula (13) ), A repeating unit represented by formula (14), formula (15), formula (16) or formula (17) is preferred.

[Wherein, R ₁₄ represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, It represents a substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group or cyano group. n represents an integer of 0 to 4. When a plurality of R ₁₄ are present, they may be the same or different. ]

Wherein R ₁₅ and R ₁₆ are each independently an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, aryl Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. o and p each independently represent an integer of 0 to 3. When a plurality of R ₁₇ and R ₁₆ are present, they may be the same or different. ]

[Wherein, R ₁₇ and R ₂₀ are each independently an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an aryl group. Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. q and r each independently represents an integer of 0 to 4. R ₁₈ and R ₁₉ each independently represent a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, a carboxyl group, a substituted carboxyl group or a cyano group. When a plurality of R ₁₇ and R ₂₀ are present, they may be the same or different. ]

[Wherein, R ₂₁ represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, It represents a substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group or cyano group. s represents the integer of 0-2. Ar ₁₃ and Ar ₁₄ each independently represent an arylene group, a divalent heterocyclic group or a divalent group having a metal complex structure. ss and tt each independently represent 0 or 1. X ₄ represents O, S, SO, SO ₂ , Se or Te. When a plurality of R ₂₁ are present, they may be the same or different. ]

[Wherein R ₂₂ and R ₂₃ are each independently an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, aryl Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. t and u each independently represents an integer of 0 to 4. X ₅ represents O, S, SO ₂ , Se, Te, N—R ₂₄ , or SiR ₂₅ R ₂₆ . X ₆ and X ₇ each independently represent N or C—R ₂₇ . R ₂₄ , R ₂₅ , R ₂₆ and R ₂₇ each independently represent a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group or a monovalent heterocyclic group. When there are a plurality of R ₂₂ , R ₂₃ and R ₂₇ , they may be the same or different. ]

Wherein R ₂₈ and R ₃₃ are each independently an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, aryl Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. v and w each independently represent an integer of 0 to 4. R ₂₉ , R ₃₀ , R ₃₁ and R ₃₂ each independently represents a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, a carboxyl group, a substituted carboxyl group or a cyano group. Ar ₅ represents an arylene group, a divalent heterocyclic group or a divalent group having a metal complex structure. When a plurality of R ₂₈ and R ₃₃ are present, they may be the same or different. ]

[Wherein, R ₃₄ represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, It represents a substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group or cyano group. uu represents an integer of 0 to 4. When a plurality of R ₃₄ are present, they may be the same or different. ]

〔式中、Ａｒ₆、Ａｒ₇、Ａｒ₈およびＡｒ₉はそれぞれ独立にアリーレン基または２価の複素環基を示す。Ａｒ₁₀、Ａｒ₁₁およびＡｒ₁₂はそれぞれ独立にアリール基、または１価の複素環基を示す。Ａｒ₆、Ａｒ₇、Ａｒ₈、Ａｒ₉、Ａｒ₁₀、Ａｒ₁₁およびＡｒ₁₂は置換基を有していてもよい。ｘおよびｙはそれぞれ独立に０または正の整数を示す。〕 Among the repeating units represented by the above formula (6), the repeating unit represented by the following formula (18) is preferable from the viewpoint of changing the emission wavelength, increasing the luminous efficiency, and improving the heat resistance. .

[Wherein, Ar ₆ , Ar ₇ , Ar ₈ and Ar ₉ each independently represent an arylene group or a divalent heterocyclic group. Ar ₁₀ , Ar ₁₁ and Ar ₁₂ each independently represent an aryl group or a monovalent heterocyclic group. Ar ₆ , Ar ₇ , Ar ₈ , Ar ₉ , Ar ₁₀ , Ar ₁₁ and Ar ₁₂ may have a substituent. x and y each independently represent 0 or a positive integer. ]

  From the viewpoint of stability of the light-emitting element and ease of synthesis, it is preferable to include one or more and three or less repeating units represented by the formula (18), more preferably one or two. More preferably, it includes a single repeating unit represented by formula (18).

  When the polymer compound of the present invention has two types of repeating units represented by the formula (18) as repeating units, x = y = 0 from the viewpoint of adjusting the emission wavelength, device characteristics, etc. And a combination of repeating units represented by x = 1 and y = 0, or a combination of two repeating units represented by x = 1 and y = 0.

In the present invention, when the repeating unit represented by the formula (2) and the repeating unit represented by the formula (18) are included, the molar ratio is preferably 98: 2 to 60:40.
From the viewpoint of fluorescence intensity, device characteristics, etc., the repeating unit represented by the formula (18) is 30 moles relative to the total of the repeating unit represented by the formula (2) and the repeating unit represented by the formula (18). % Or less is more preferable. When an EL device is produced using only one type of the polymer compound of the present invention, the ratio of the repeating unit represented by the formula (2) and the repeating unit represented by the formula (18) from the viewpoint of device characteristics and the like. Is preferably 95: 5 to 70:30.

In the present invention, when the repeating unit represented by the formula (2) and the repeating unit represented by the formulas (9) and (10) are included, the molar ratio is preferably 90:10 to 10:90.
In the present invention, the repeating unit represented by the formula (2) and the formulas (5) to (8) or the formulas (11) to (17) (provided that the formula (5) is represented by the formulas (9) and (10). ) And when the repeating unit represented by formula (6) is excluded from the formula (18)), the molar ratio is preferably 99: 1 to 60:40, and 99: It is more preferable that it is 1-70: 30.

Specific examples of the repeating unit represented by the above formula (18) include those represented by the following (formulas 133 to 140).

In the above formula, R is the same as that in formulas 1-132.
In order to increase the solubility in an organic solvent, it is preferable to have at least one other than a hydrogen atom, and it is preferable that the symmetry of the shape of the repeating unit including a substituent is small.

  In the above formula, in the substituent in which R contains alkyl, it is preferable that one or more alkyls having a cyclic or branched structure are contained in order to enhance the solubility of the polymer compound in an organic solvent. Furthermore, in the above formula, when R contains an aryl group or a heterocyclic group as a part thereof, they may further have one or more substituents. Among the structures represented by the above formulas 133 to 140, the structures represented by the above formula 134 and the above formula 137 are preferable from the viewpoint of adjusting the emission wavelength.

In the repeating unit represented by the above formula (18), Ar ₆ , Ar ₇ , Ar ₈ and Ar ₉ are each independently an arylene group from the viewpoint of adjusting the emission wavelength, device characteristics and the like, and Ar ₁₀ , Ar It is preferable that ₁₁ and Ar ₁₂ each independently represent an aryl group.

Ar ₆ , Ar ₇ , and Ar ₈ are each independently preferably an unsubstituted phenylene group, an unsubstituted biphenyl group, an unsubstituted naphthylene group, or an unsubstituted anthracenediyl group.

Ar ₁₀ , Ar _11, and Ar ₁₂ are each preferably an aryl group having three or more substituents independently from the viewpoints of solubility in _an organic solvent, device characteristics, and the like. Ar ₁₀ , Ar ₁₁ And Ar ₁₂ is more preferably a phenyl group having 3 or more substituents, a naphthyl group having 3 or more substituents, or an anthranyl group having 3 or more substituents. Ar ₁₀ , Ar ₁₁ and Ar ₁₂ Is more preferably a phenyl group having three or more substituents.

〔式中、Ｒe、ＲfおよびＲgは、それぞれ独立にアルキル基、アルコキシ基、アルキルチオ基、アリール基、アリールオキシ基、アリールチオ基、アリールアルキル基、アリールアルコキシ基、アリールアルキルチオ基、アリールアルケニル基、アリールアルキニル基、アミノ基、置換アミノ基、シリル基、置換シリル基、シリルオキシ基、置換シリルオキシ基、１価の複素環基またはハロゲン原子を表す。Ｒe、ＲfおよびＲgに含まれる水素原子はフッ素原子に置換されていてもよい。〕 Among them, Ar ₁₀ , Ar ₁₁ and Ar ₁₂ are each independently the following formula (18-1) and preferably x + y ≦ 3, more preferably x + y = 1, and even more preferably x = 1 and y = 0.

[In the formula, Re, Rf and Rg are each independently an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an aryl group. An alkynyl group, an amino group, a substituted amino group, a silyl group, a substituted silyl group, a silyloxy group, a substituted silyloxy group, a monovalent heterocyclic group, or a halogen atom is represented. Hydrogen atoms contained in Re, Rf and Rg may be substituted with fluorine atoms. ]

More preferably, in the above formula (18-1), Re and Rf are each independently an alkyl group having 3 or less carbon atoms, an alkoxy group having 3 or less carbon atoms, or an alkylthio group having 3 or less carbon atoms, and Rg is carbon. The thing which is a C3-C20 alkyl group, a C3-C20 alkoxy group, and a C3-C20 alkylthio group is mentioned.

[ここで、(１８−２)、(１８−３)で示される構造に含まれるベンゼン環は、それぞれ独立に１個以上４個以下の置換基を有していてもよい。それら置換基は、互いに同一であっても、異なっていても良い。また、複数の置換基が連結して環を形成していても良い。さらに、該ベンゼン環に隣接して他の芳香族炭化水素環または複素環が結合していても良い。] In the repeating unit represented by the formula (18), Ar ₇ is preferably the following formula (18-2) or (18-3).

[Here, the benzene rings contained in the structures represented by (18-2) and (18-3) may each independently have 1 or more and 4 or less substituents. These substituents may be the same as or different from each other. A plurality of substituents may be connected to form a ring. Further, another aromatic hydrocarbon ring or heterocyclic ring may be bonded adjacent to the benzene ring. ]

式（１８）の好ましい具体例としては、発光波長を調節する観点から、下記式（２２）、（２３）、（２４）で示される繰り返し単位が好ましい。さらに好ましくは蛍光強度の観点から、下記式（２２）で示される繰り返し単位である。この場合、耐熱性がより高くなりうる。

As the repeating unit represented by the formula (18), particularly preferred specific examples include those represented by the following (formulas 141 to 142).

As a preferred specific example of the formula (18), from the viewpoint of adjusting the emission wavelength, the repeating units represented by the following formulas (22), (23) and (24) are preferred. More preferred is a repeating unit represented by the following formula (22) from the viewpoint of fluorescence intensity. In this case, the heat resistance can be higher.

In addition, the polymer compound of the present invention includes a repeating unit other than the repeating units represented by the above formulas (2) and (5) to (18) as long as the light emission characteristics and the charge transport characteristics are not impaired. Also good. In addition, these repeating units and other repeating units may be linked by non-conjugated units, or the repeating units may contain those non-conjugated parts. Examples of the binding structure include those shown below and combinations of two or more of the following. Here, R is a group selected from the same substituents as described above, and Ar is a carbon number of 6 to 60 which may contain a hetero atom (oxygen, sulfur, nitrogen, silicon, boron, phosphorus, selenium). Represents a hydrocarbon group.

As the polymer compound containing a repeating unit other than the repeating unit represented by the formula (2), the above formulas (2-1), (2-2), (2-3) are used from the viewpoints of fluorescence characteristics and device characteristics. ) And one or more repeating units selected from the repeating units represented by (2-4) and one or more repeating units represented by the above formulas (5) to (18) are preferred. More preferred are those composed of any one of the repeating units represented by 134 and 137 and the repeating unit represented by the formula (2-1), and any one of the repeating units represented by the formula 134 and the formula 137 and the formula What consists of a repeating unit shown by (2-1) is further more preferable, and what consists of a repeating unit shown by Formula (2-1) and a repeating unit shown by Formula (22), and Formula (2-1) Those composed of repeating units and the repeating unit represented by the formula (24) shown is more preferable.

  The polymer compound of the present invention may be a random, block or graft copolymer, or may be a polymer having an intermediate structure thereof, such as a random copolymer having a block property. Good. From the viewpoint of obtaining a polymer light emitter having a high quantum yield of fluorescence or phosphorescence, a random copolymer having a block property and a block or graft copolymer are preferable to a complete random copolymer. A case in which the main chain is branched and there are three or more terminal portions and dendrimers are also included.

〔式中、Ａ環およびＢ環はそれぞれ独立に、置換基を有していてもよい芳香族炭化水素環を表すが、Ａ環における芳香族炭化水素環とＢ環における芳香族炭化水素環とは互いに異なる環構造の芳香族炭化水素環であり、結合手はそれぞれＡ環およびＢ環上に存在する。Ｃ環は前述と同様である。〕 In the structure represented by the formula (1), when the A ring and the B ring are different structures, the structures represented by the adjacent formula (1) are represented by the following formulas (19-1) and (19-2): , (19-3). From the viewpoint of electron injecting property and transporting property, the polymer compound preferably contains at least one of (19-1) to (19-3).

[In the formula, A ring and B ring each independently represent an aromatic hydrocarbon ring which may have a substituent, and an aromatic hydrocarbon ring in A ring and an aromatic hydrocarbon ring in B ring; Are aromatic hydrocarbon rings having ring structures different from each other, and bonds are present on the A ring and the B ring, respectively. Ring C is the same as described above. ]

When the ring B is an aromatic hydrocarbon ring in which two or more benzene rings are condensed, it is preferable that at least (19-1) is included among the formulas (19-1) to (19-3).

  In the case where a polymer compound in which the B ring is an aromatic hydrocarbon ring in which two or more benzene rings are condensed is used as a material for the polymer LED, the above formula ( The ring B-B ring chain represented by 19-2) is preferably 0.4 or less, more preferably 0.3 or less, based on all the chains including the B ring in the polymer compound. .2 or less is more preferable and substantially 0 is more preferable. Further, from the viewpoint of suppressing a change in emission wavelength during device driving, the A ring is preferably a benzene ring.

  The linkage including the B ring includes not only the B ring-A ring linkage in the formula (19-1) and the B ring-B ring linkage in the formula (19-2), but also the B ring in the formula (2 The chain in the case where the repeating unit other than the structure shown in FIG. When the repeating unit other than the structure represented by the formula (2) contains a B ring, there should be a linkage between the B ring of the formula (2) and the B ring of the repeating unit other than the structure represented by the formula (2). For example, those linkages are also included in the B ring-B ring linkage.

    In a polymer compound having many chains of aromatic hydrocarbon rings in which two or more benzene rings are condensed, when the device is driven for a long time, light emission having a longer wavelength is observed compared to the light emission wavelength at the initial driving time. There is a case. Specifically, when the repeating unit represented by the formula (2-1) is included, when the naphthalene ring-naphthalene ring chain is large, when the device is driven for a long time, compared with the emission wavelength at the initial driving time. Long wavelength light emission may be observed. The naphthalene ring-naphthalene ring chain is preferably 0.4 or less, more preferably 0.3 or less, more preferably 0.2 or less with respect to the total chain including the naphthalene ring in the polymer compound. More preferably, it is more preferably substantially zero.

    As a structure with few chains of aromatic hydrocarbon rings in which two or more benzene rings are condensed, a structure represented by two adjacent formulas (2) as shown in the formula (19-1) is a head (H ) And a tail (T) are preferable. Further, as the polymer compound, a polymer compound in which the adjacent formula (1-A) is substantially all HT bonded is preferable. In particular, in the case of the above formulas (2-1) and (2-2), it is preferable to connect HT.

It is a copolymer containing 50 mol% or more of the repeating units represented by the formula (2), and the repeating unit represented by the formula (2) is adjacent to the repeating unit represented by the formula (2). If the ratio is Q ₁₁ , Q ₁₁ is preferably 25% or more from the viewpoint of fluorescence intensity, device characteristics, and the like.

  In order to polymerize the monomer to obtain the polymer compound of the present invention, a monomer containing two or more structures represented by the formula (2) can be used as the monomer. Examples of the monomer include those having a structure in which two or more polymerization active groups are added to a dimer to pentamer. For example, a polymerization active group is present at the bond in the formulas (19-1) to (19-3). Examples include bonded monomers.

  One of the methods for obtaining a polymer compound containing a large amount of the formula (19-1) or a polymer compound having a small B ring-B ring chain is substituted with a substituent that participates in polymerization bonded to the A ring and the B ring. There is a method of polymerizing using compounds having different substituents involved in polymerization. For example, if polymerization is carried out using a compound in which a boric acid ester is bonded to the A ring and a halogen atom is bonded to the B ring, a polymer compound having few B ring-B ring chains can be obtained.

  The polymer compound of the present invention is preferably a random copolymer or a block or graft copolymer having a block property, but the higher the intensity of fluorescence, the higher the device characteristics when it contains a chain of repeating units represented by the formula (2). Excellent. In the case where the repeating unit represented by the formula (2) contained in the polymer compound of the present invention is contained in the same ratio, it is more fluorescent intensity to include a longer chain of the repeating unit represented by the formula (2). And excellent device characteristics.

A copolymer comprising a repeating unit represented by the formula (2) and a repeating unit represented by the formula (18), wherein the repeating unit represented by the formula (18) comprises 15 to 50 mol% of all repeating units. In this case, if the ratio of the repeating unit represented by the formula (18) being the repeating unit represented by the formula (18) is Q ₂₂ , Q ₂₂ is 15 to 50 from the viewpoint of fluorescence intensity and device characteristics. % Or more is preferable, and 20 to 40% is more preferable.

  As a polymer compound and a composition thereof in which the fluorescence intensity, device characteristics and the like increase when having a specific chain, the repeating unit represented by the above formula (18) and the following formula (2-1) or (2-2) A polymer compound containing a repeating unit represented by formula (II) and a composition thereof are preferred.

〔式中、Ｒ_p1、Ｒ_q1、Ｒ_p2、Ｒ_q2、ａ、ｂ、Ｃ環は前記と同様の意味を表す。〕 When the polymer compound of the present invention and the composition thereof include a repeating unit represented by the above formula (18) and a repeating unit represented by the following formula (2-1) or (2-2), all the formulas (18 ), When the ratio of formula (18) bonded to the asterisk (*) in formula (2-1) or formula (2-2) is Q _21N , Q ₂₂ is 15 to 50%. Is preferable, and the range of 20 to 40% is more preferable. When Q ₂₂ is in the range of 15 to 50%, Q _21N is preferably in the range of 20 to 40%.

[Wherein, R _p1 , R _q1 , R _p2 , R _q2 , a, b, and the C ring represent the same meaning as described above. ]

  An NMR measurement method can be used as a method for examining the chain of the polymer compound.

  The glass transition temperature of the polymer compound is preferably about 100 ° C. or higher, more preferably 130 ° C. or higher, and 150 ° C. or higher so that it can withstand various processes for producing light emitting elements and the like. More preferably it is.

The number average molecular weight in terms of polystyrene of the polymer compound of the present invention is usually about 10 ³ to 10 ⁸ , preferably 10 ⁴ to 10 ⁶ . Further, the weight average molecular weight in terms of polystyrene is usually about 10 ³ to 10 ⁸ , and preferably 5 × 10 ⁴ or more, more preferably 10 ⁵ or more from the viewpoint of film formability and efficiency when used as an element. preferable. Moreover, it is preferable that it is 10 < ⁵ > -5 * 10 < ⁶ > from a soluble viewpoint. The polymer compound in a preferable range has high efficiency even when used alone for the device or when two or more kinds are mixed and used for the device. Similarly, from the viewpoint of improving the film formability of the polymer compound, the dispersity (weight average molecular weight / number average molecular weight) is preferably 1.5 or more.

When the polymer compound of the present invention is a conjugated polymer, the weight average molecular weight is preferably 4 × 10 ^{4 to} 5 × 10 ⁶ from the viewpoint of film forming properties and the efficiency when formed into an element. It is more preferably 10 ^{4 to} 5 × 10 ⁶ , and even more preferably 10 ^{5 to} 5 × 10 ⁶ .

  When the repeating unit is a polymer compound composed of the formula (2), the GPC elution curve may be substantially unimodal or substantially bimodal. The polymer compound that is unimodal and the polymer compound that is bimodal are different in light emission characteristics and device characteristics, and can be used properly depending on the application.

The term “bimodality” as used herein refers not only to the case where there are two curved peaks, but also in the process of increasing the curve, the degree of increase continues for a long time after increasing rapidly, and then increases rapidly again. In the process of descending the curve, it includes the case where the degree of descending continues for a long time after abrupt descending and then suddenly rises again.

  When the repeating unit is a polymer compound composed of the formula (2) and the formula (18), the GPC elution curve may be substantially unimodal or substantially bimodal. .

  The elution curve of GPC is generally measured by GPC (gel permeation chromatography). In the measurement of the elution curve of GPC in the present invention, tetrahydrofuran was used as the mobile phase of GPC, and flowed at a flow rate of 0.6 mL / min. The column was formed by connecting two TSKgel SuperHM-H (manufactured by Tosoh Corp.) and one TSKgel SuperH2000 (manufactured by Tosoh Corp.) in series, and using a differential refractive index detector as a detector. In addition, GPC may be called SEC (size exclusion chromatography). The elution curve of GPC varies depending on the type of polymer compound, and includes a substantially unimodal curve, a substantially bimodal curve, and a curve having three or more peaks.

  The polymer compound of the present invention may have a branched structure in the main chain. Examples of the branched structure include a structure represented by the above formula (4), but the bond is an A ring. Is preferably contained in the ring B and contained in the B ring.

〔式中、Ｒ_p1、Ｒ_q1、ａ、ｂおよびＣ環は前記と同様の意味を表す。〕 More preferably, the branched structure is represented by the following formula (25).

[Wherein, R _p1 , R _q1 , a, b and C ring represent the same meaning as described above. ]

  In addition, the terminal group of the polymer compound of the present invention is protected with a stable group, because if the polymerization active group remains as it is, there is a possibility that the light emission characteristics and life of the device will be reduced. Is preferred. Those having a conjugated bond continuous with the conjugated structure of the main chain are preferable, and examples thereof include a structure in which an aryl group or a heterocyclic group is bonded via a carbon-carbon bond. Specific examples include substituents described in Chemical formula 10 of JP-A-9-45478.

  In the polymer compound of the present invention, at least one of the molecular chain terminals is a monovalent heterocyclic group, a monovalent aromatic amine group, a monovalent group derived from a heterocyclic coordination metal complex, or a formula weight of 90. It preferably has an aromatic end group selected from the above aryl groups. This aromatic terminal group may be one type or two or more types. The terminal groups other than the aromatic terminal group are preferably 30% or less, more preferably 20% or less, and even more preferably 10% or less of all terminals from the viewpoint of fluorescence characteristics and device characteristics. More preferably, it is substantially absent. Here, the molecular chain terminal means an aromatic terminal group present at the terminal of the polymer compound by the production method of the present invention, a leaving group of the monomer used for the polymerization, and the polymer is not detached at the time of polymerization. A leaving group present at the end of a compound refers to a proton bonded to a monomer present at the end of a polymer compound, but from which the leaving group of the polymer is removed but the aromatic end group is not bonded. Of these molecular chain ends, the leaving group of the monomer used for the polymerization, and the leaving group present at the end of the polymer compound without being eliminated during the polymerization, for example, a monomer having a halogen atom as a raw material In the case of producing the polymer compound of the present invention using a polymer, since the fluorescence characteristics and the like tend to be reduced if halogen remains at the polymer compound terminal, the monomer leaving group is present at the terminal. It is preferable that no substantially remains.

  In the polymer compound of the present invention, at least one of the molecular chain ends is a monovalent heterocyclic group, a monovalent aromatic amine group, a monovalent group derived from a heterocyclic coordination metal complex, or a formula weight of 90. It is expected that various properties are added to the polymer compound by sealing with an aromatic end group selected from the above aryl groups. Specifically, the effect of increasing the time required to reduce the luminance of the device, the effect of increasing the charge injection property, the charge transport property, the light emission property, the effect of increasing the compatibility and interaction between the copolymers, the anchor effect Etc.

Examples of the monovalent heterocyclic group include the groups described above, and specific examples thereof include the following structures.

  Examples of the monovalent aromatic amine group include a structure in which one of two bonds having two in the structure of the formula (18) is sealed with R.

  Examples of the monovalent group derived from the heterocyclic coordination metal complex include a structure in which one of two bonds in the divalent group having the above metal complex structure is sealed with R. .

  Among the terminal groups, the aryl group having a formula weight of 90 or more usually has about 6 to 60 carbon atoms. Here, the formula weight of the aryl group means the sum of the number of atoms of each element multiplied by the atomic weight of each element in the chemical formula when the aryl group is represented by a chemical formula.

  Examples of the aryl group include a phenyl group, a naphthyl group, an anthracenyl group, a group having a fluorene structure, and a condensed ring compound group.

があげられる。
Examples of the phenyl group for sealing the end include

Can be given.

があげられる。 As a naphthyl group for sealing the end, for example,

Can be given.

があげられる。 As an anthracenyl group, for example,

Can be given.

があげられる。 Examples of the group containing a fluorene structure include:

Can be given.

があげられる。 As the condensed ring compound group, for example,

Can be given.

  As the terminal group for enhancing the charge injection property and the charge transport property, a monovalent heterocyclic group, a monovalent aromatic amine group, and a condensed ring compound group are preferable, and a monovalent heterocyclic group and a condensed ring compound group are more preferable. .

  As the terminal group for enhancing the light emission characteristics, a monovalent group derived from a naphthyl group, an anthracenyl group, a condensed ring compound group or a heterocyclic coordination metal complex is preferable.

  As the terminal group having an effect of prolonging the time required for reducing the luminance of the element, an aryl group having a substituent is preferable, and a phenyl group having 1 to 3 alkyl groups is preferable.

  As an end group having an effect of enhancing compatibility and interaction between polymer compounds, an aryl group having a substituent is preferable. An anchor effect can be obtained by using a phenyl group substituted with an alkyl group having 6 or more carbon atoms. The anchor effect means an effect in which the end group plays an anchor role with respect to the polymer aggregate and enhances the interaction.

式中のＲは前述のＲが例示されるが、水素、シアノ基、炭素数１〜２０のアルキル基、アルコキシ基、アルキルチオ基、炭素数６〜１８のアリール基、アリールオキシ基、炭素数４〜１４の複素環基が好ましい。 As the group for enhancing the element characteristics, the following structure is preferable.

R in the formula is exemplified by the aforementioned R, but hydrogen, cyano group, alkyl group having 1 to 20 carbon atoms, alkoxy group, alkylthio group, aryl group having 6 to 18 carbon atoms, aryloxy group, and carbon number 4 ~ 14 heterocyclic groups are preferred.

As the group for enhancing the element characteristics, the following structure is more preferable.

  Examples of the good solvent for the polymer compound of the present invention include chloroform, methylene chloride, dichloroethane, tetrahydrofuran, toluene, xylene, mesitylene, tetralin, decalin, and n-butylbenzene. Although depending on the structure and molecular weight of the polymer compound, it can usually be dissolved in these solvents in an amount of 0.1% by weight or more.

The polymer compound of the present invention preferably has a fluorescence quantum yield of 50% or more, more preferably 60% or more, and further preferably 70% or more from the viewpoint of fluorescence intensity, device characteristics, and the like.

〔式中、Ｒ_tは置換基を表し、Ａ環および/またはＢ環に結合している。ａｔは０以上の整数を表す。Ａ環、Ｂ環およびＣ環は前述と同様である。〕 Next, the method for producing the polymer compound of the present invention will be described.
The polymer compound having a repeating unit represented by the formula (2) can be produced, for example, by polymerizing using the compound represented by the formula (20) as one of the raw materials.

[Wherein, R _t represents a substituent and is bonded to the A ring and / or the B ring. at represents an integer of 0 or more. A ring, B ring and C ring are the same as described above. ]

Rt is an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, arylalkynyl group, amino group, substituted amino group, A silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group, nitro group or cyano group are preferred. Examples thereof are the same groups as the substituents of the A ring and the B ring. Moreover, at is an integer of 0 or more, but is preferably 0 to 3.

（２１）

〔式中、Ｙ_tおよびＹ_uはそれぞれ独立に重合に関与する置換基を表し、それぞれＡ環および/またはＢ環に結合している。Ａ環、Ｂ環およびＣ環は前述と同様である。〕 Among the compounds represented by the formula (20), it is preferable to polymerize using a compound represented by the following formula (21) from the viewpoint of ease of raising the degree of polymerization and ease of controlling the polymerization.

(21)

Wherein, Y _t and Y _u represents a substituent that participates in independently polymerization, is bound to ring A and / or B ring, respectively. A ring, B ring and C ring are the same as described above. ]

〔式中、Ｒ_r1、Ｒ_s1、Ｒ_r2、Ｒ_s2、Ｒ_r3、Ｒ_s3、Ｒ_r4およびＲ_s4は置換基を表し、ａは０〜３の整数を表し、ｂは０〜５の整数を表し、Ｒ_r1、Ｒ_s1、Ｒ_r2、Ｒ_s2、Ｒ_r3、Ｒ_s3、Ｒ_r4およびＲ_s4がそれぞれ複数個存在する場合、それらは同一でも異なっていてもよい。Ｃ環は前述と同様である。Ｙ_t1、Ｙ_u1、Ｙ_t2、Ｙ_u2、Ｙ_t3、Ｙ_u3、Ｙ_t4およびＹ_u4はそれぞれ独立に重合に関与しうる置換基を表す。〕で示される化合物を原料の一つとして用いて重合させることにより製造することができる。 As a raw material of the polymer compound having a repeating unit represented by formulas (2-1), (2-2), (2-3), and (2-4), (21) is represented by formula (21-1) , (21-2), (21-3) or (21-4).

[Wherein, R _r1 , R _s1 , R _r2 , R _s2 , R _r3 , R _s3 , R _r4 and R _s4 represent substituents, a represents an integer of 0 to 3, and b represents an integer of 0 to 5 And when there are a plurality of R _r1 , R _s1 , R _r2 , R _s2 , R _r3 , R _s3 , R _r4 and R _s4 , they may be the same or different. Ring C is the same as described above. Represents a _{Y t1, Y u1, Y t2} , Y u2, Y t3, Y u3, Y t4 and Y _u4 are substituents capable of participating independently to the polymerization. ] Can be produced by polymerizing using one of the raw materials as a raw material.

From the viewpoints of solubility in organic solvents, device characteristics, ease of synthesis, R _r1 , R _s1 , R _r2 , R _s2 , R _r3 , R _s3 , R _r4, and R _s4 are each independently alkyl. Group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, arylalkynyl group, amino group, substituted amino group, silyl group, substituted silyl group Group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group, nitro group or cyano group are preferred.

R _r1 , R _s1 , R _r2 , R _s2 , R _r3 , R _s3 , R _r4 and R _s4 alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group , Arylalkylthio group, arylalkenyl group, arylalkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent The definitions and specific examples of the heterocyclic group and the substituted carboxyl group are the same as those definitions and specific examples of the substituent in the case where the A ring and the B ring in the formula (1) have a substituent.

_{Y t1, Y u1, Y t2} , Y u2, Y t3, Y u3, substituents capable of participating in the polymerization in the Y _t4 and Y _u4 are each independently a halogen atom, alkyl sulfonate group, aryl sulfonate groups and aryl alkyl sulfonate groups Is preferable because it can be used as a raw material for various polymerization reactions.

Further, (21-1), (21-2), when _{Y t1, Y u1, Y t3} , Y u3, Y t4 and Y _u4 is a bromine atom in (21-3) or (21-4), It is preferable from the viewpoint of easy synthesis, easy functional group conversion, and use as a raw material for various polymerization reactions.

Moreover, it is preferable that it is a = b = 0 from a viewpoint of improving heat resistance in (21-1), (21-2), (21-3) or (21-4).

〔式中、Ｃ環、Ｙ_t、Ｙ_uはそれぞれ前記と同様の意味を表す。ｃは０又は正の整数を表し、ｄは０又は正の整数を表し、かつ３≦ｃ＋ｄ≦６を満たす整数を表し、好ましくは３≦ｃ＋ｄ≦４を満たす整数を表す。Ｙ_t、Ｙ_uが複数存在する場合、それらは同一でも異なっていてもよい。〕で示される化合物を原料の一つとして用いて重合させることにより製造することができる。 Further, in the case of producing a polymer compound or dendrimer having a branched main chain and having three or more terminal parts, it is produced by polymerizing using a compound represented by the following formula (26) as one of raw materials. can do.

Wherein, C ring, Y _t, Y _u represents the same meanings, respectively. c represents 0 or a positive integer, d represents 0 or a positive integer, and represents an integer satisfying 3 ≦ c + d ≦ 6, preferably an integer satisfying 3 ≦ c + d ≦ 4. If Y _t, Y _u is plurally present, they may be the same or different. ] Can be produced by polymerizing using one of the raw materials as a raw material.

〔式中、Ｒ_r1、Ｒ_s1、Ｒ_r2、Ｒ_s2、Ｒ_r3、Ｒ_s3、Ｒ_r4、Ｒ_s4、Ｙ_t1、Ｙ_u1、Ｙ_t3、Ｙ_u3、Ｙ_t4およびＹ_u4は前記と同じ意味を表し、ａ’は０〜４の整数を表し、ｂ’は０〜５の整数を表し、ｃは０〜３の整数を表し、ｄは０〜５の整数を表し、ａ’＋ｃ≦４、ｂ’＋ｄ≦６、３≦ｃ＋ｄ≦６である。Ｒ_r1、Ｒ_s1、Ｒ_r2、Ｒ_s2、Ｒ_r3、Ｒ_s3、Ｒ_r4、Ｒ_s4、Ｒ_y1、Ｒ_z1、Ｙ_t1、Ｙ_u1、Ｙ_t3、Ｙ_u3、Ｙ_t4およびＹ_u4がそれぞれ複数個存在する場合、それらは同一でも異なっていてもよい。〕 As a raw material shown by Formula (26), Preferably, the compound shown by following formula (26-1), (26-2), (26-3) is mentioned.

_{Wherein, R r1, R s1, R} r2, R s2, R r3, R s3, R r4, R s4, Y t1, Y u1, Y t3, Y u3, Y t4 and Y _u4 are the same meaning A ′ represents an integer of 0 to 4, b ′ represents an integer of 0 to 5, c represents an integer of 0 to 3, d represents an integer of 0 to 5, and a ′ + c ≦ 4 B ′ + d ≦ 6 and 3 ≦ c + d ≦ 6. _{R r1, R s1, R r2} , R s2, R r3, R s3, R r4, R s4, R y1, R z1, Y t1, Y u1, Y t3, Y u3, Y t4 and Y _u4 are each more When there are two, they may be the same or different. ]

Further, from the viewpoint of improving heat resistance in (16-1), (26-2) or (26-3), it is preferable that a ′ = b ′ = 0.

  In the production of the polymer compound of the present invention, a polymer compound having a higher molecular weight when the compound represented by the formula (26) or (26-1) to (26-3) is contained in the monomer as a raw material Is obtained. In this case, the compound represented by the formula (26) or (26-1) to (26-2) is preferably 10 mol% or less when the compound represented by the formula (20) is 100 mol%. It is contained in the monomer as a raw material in a range, and more preferably in a range of 1 mol% or less.

  Further, when the polymer compound of the present invention has a repeating unit other than the formula (2), a compound having two substituents involved in the polymerization, which becomes a repeating unit other than the formula (2), coexists. And then polymerize.

式（２９）
Ｙ₉−Ａｒ₄−Ｘ₂−Ｙ₁₀

式（３０）
Ｙ₁₁−Ｘ₃−Ｙ₁₂
〔式中、Ａｒ₁、Ａｒ₂、Ａｒ₃、Ａｒ₄、ｆｆ、Ｘ₁、Ｘ₂およびＸ₃は前記と同じである。Ｙ₅、Ｙ₆、Ｙ₇、Ｙ₈、Ｙ₉、Ｙ₁₀、Ｙ₁₁、およびＹ₁₂はそれぞれ独立に重合可能な置換基を示す。〕
上記式（２）で示される単位に加えて、順に（５）、（６）、（７）または（８）の単位を１つ以上有する高分子化合物を製造することができる。 Examples of the compound having two polymerizable substituents that are repeating units other than the repeating unit represented by the formula (2) include compounds represented by the following formulas (27) to (30).
In addition to the compound represented by the formula (20), a compound represented by the following formula (27) to (30) is polymerized to formula (27)
Y ₅ —Ar ₁ —Y ₆

Formula (28)

Formula (29)
Y ₉ -Ar ₄ -X ₂ -Y ₁₀

Formula (30)
Y ₁₁ -X ₃ -Y ₁₂
[Wherein, Ar ₁ , Ar ₂ , Ar ₃ , Ar ₄ ff, X ₁ , X ₂ and X ₃ are the same as described above. Y _5, shows a _{Y 6, Y 7, Y 8} , Y 9, Y 10, Y 11, and Y ₁₂ each independently represent a polymerizable substituent. ]
In addition to the unit represented by the above formula (2), a polymer compound having one or more units of (5), (6), (7) or (8) in order can be produced.

The polymer compound with the end sealed is the above formula (20), (21), (21-1) to (21-4), (26), (26-1) to (26-3), (27 In addition to (30) to (30), the compounds represented by the following formulas (31) and (32) can be used as raw materials for polymerization.

E ₁ -Y ₁₅ (31)
E ₂ -Y ₁₆ (32)

(E1 and E2 represent a monovalent heterocyclic ring, an aryl group having a substituent, a monovalent aromatic amine group, and a monovalent group derived from a heterocyclic coordination metal complex, and Y ₁₅ and Y ₁₆ represent Independently represents a substituent capable of participating in polymerization.)

〔式中、Ａｒ₆、Ａｒ₇、Ａｒ₈、Ａｒ₉、Ａｒ₁₀、Ａｒ₁₁、Ａｒ₁₂、ｘおよびｙの定義および好ましい例については前記と同じ。Ｙ₁₃およびＹ₁₄はそれぞれ独立に重合に関与しうる置換基を示す。〕 In addition, the compound having two substituents involved in the condensation corresponding to the above formula (18), which is a repeating unit other than the repeating unit represented by the above formula (2), is represented by the following formula (33). Compounds.

[Wherein, definitions and preferred examples of Ar ₆ , Ar ₇ , Ar ₈ , Ar ₉ , Ar ₁₀ , Ar ₁₁ , Ar ₁₂ , x and y are the same as described above. Y ₁₃ and Y ₁₄ each independently represent a substituent capable of participating in polymerization. ]

Among the substituents that can participate in the polymerization in the production method of the present invention, the substituents that can participate in the polymerization include halogen atoms, alkyl sulfonate groups, aryl sulfonate groups, aryl alkyl sulfonate groups, borate ester groups, sulfoniums. Examples thereof include a methyl group, a phosphonium methyl group, a phosphonate methyl group, a monohalogenated methyl group, -B (OH) ₂ , a formyl group, a cyano group, and a vinyl group.

  Here, examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.

  Examples of the alkyl sulfonate group include a methane sulfonate group, an ethane sulfonate group, and a trifluoromethane sulfonate group. Examples of the aryl sulfonate group include a benzene sulfonate group and a p-toluene sulfonate group. Examples of the aryl sulfonate group include benzyl. Examples include sulfonate groups.

式中、Ｍｅはメチル基を、Ｅｔはエチル基を示す。 Examples of the borate group include groups represented by the following formula.

In the formula, Me represents a methyl group, and Et represents an ethyl group.

Examples of the sulfonium methyl group include groups represented by the following formula.
_{^{-CH 2 S + Me 2 X -}} , -CH 2 S + Ph 2 X -
(X represents a halogen atom, and Ph represents a phenyl group.)

Examples of the phosphonium methyl group include groups represented by the following formula.
_{^{-CH 2 P + Ph 3 X -}} (X represents a halogen atom.)

Examples of the phosphonate methyl group include groups represented by the following formula.
—CH ₂ PO (OR ′) ₂ (X represents a halogen atom, R ′ represents an alkyl group, an aryl group, or an arylalkyl group.)

  Examples of the monohalogenated methyl group include a methyl fluoride group, a methyl chloride group, a methyl bromide group, and a methyl iodide group.

The preferred substituents involved in the condensation polymerization vary depending on the type of polymerization reaction. For example, when using a zerovalent nickel complex such as a Yamamoto coupling reaction, a halogen atom, an alkyl sulfonate group, an aryl sulfonate group, or an aryl alkyl sulfonate. Groups. In the case of using a nickel catalyst or a palladium catalyst such as a Suzuki coupling reaction, an alkyl sulfonate group, a halogen atom, a borate group, -B (OH) _{2 and the} like can be mentioned.

  Specifically, in the production method of the present invention, a compound having a plurality of substituents involved in polymerization, which is a monomer, is dissolved in an organic solvent as necessary. For example, using an alkali or a suitable catalyst, It can be carried out at a melting point or higher and a boiling point or lower. For example, “Organic Reactions”, Vol. 14, pp. 270-490, John Wiley & Sons, Inc., 1965, “Organic Synthesis”, Collective Vol. 6, (Collective Volume VI), 407-411, John Wiley & Sons, Inc., 1988, Chemical Review (Chem. Rev.), 95, 2457 (1995), Journal of Organometallic. Chemistry (J. Organomet. Chem.), 576, 147 (1999), Macromolecular Chemistry Mac Molecular Symposium (Makromol., Macromol.Symp.), Vol. 12, page 229 (1987) may be a known method described, for example.

In the method for producing a polymer compound of the present invention, the condensation polymerization may be carried out using the formulas (20), (21), (21-1) to (21-4), (26), (26-1) to Depending on the substituents involved in the condensation polymerization of the compounds represented by (26-3) and (27) to (33), they can be produced by using a known condensation reaction.
When the polymer compound of the present invention forms a double bond in condensation polymerization, for example, a method described in JP-A-5-202355 can be mentioned. That is, polymerization by a Wittig reaction of a compound having a formyl group and a compound having a phosphonium methyl group, or polymerization of a compound having a formyl group and a phosphonium methyl group, by a Heck reaction between a compound having a vinyl group and a compound having a halogen atom. Polymerization, polycondensation of compounds having two or more monohalogenated methyl groups by the dehydrohalogenation method, polycondensation of compounds having two or more sulfonium methyl groups by the sulfonium salt decomposition method, having a formyl group Examples include a method such as polymerization by a Knoevenagel reaction between a compound and a compound having a cyano group, and a method such as polymerization by a McMurry reaction of a compound having two or more formyl groups.
In the case where the polymer compound of the present invention generates a triple bond in the main chain by condensation polymerization, for example, Heck reaction or Sonogashira reaction can be used.

Further, when a double bond or triple bond is not generated, for example, a method of polymerizing from a corresponding monomer by a Suzuki coupling reaction, a method of polymerizing by a Grignard reaction, a method of polymerizing by a Ni (0) complex, FeCl ₃ or the like Examples thereof include a method of polymerizing with an oxidizing agent, a method of electrochemically oxidatively polymerizing, a method of decomposing an intermediate polymer having an appropriate leaving group, and the like.

  Among these, the structure is controlled by polymerization by Wittig reaction, polymerization by Heck reaction, polymerization by Knoevenagel reaction, polymerization by Suzuki coupling reaction, polymerization by Grignard reaction, and polymerization by nickel zero-valent complex. It is preferable because it is easy. Among them, a method of polymerizing with a nickel zeroized complex is preferable from the viewpoints of ease of molecular weight control, device characteristics such as polymer LED lifetime, light emission starting voltage, current density, voltage increase during driving, and heat resistance. .

  Since the polymer compound of the present invention has an asymmetric skeleton as shown in the formula (2) in the repeating unit, the direction of the repeating unit exists in the polymer compound. In the case of controlling the orientation of these repeating units, for example, there is a method of polymerizing by controlling the orientation of the repeating units by selecting the combination of the substituent involved in the condensation polymerization of the corresponding monomer and the polymerization reaction used. Illustrated.

  In the polymer compound of the present invention, when controlling the sequence of two or more kinds of repeating units, a method of polymerizing after synthesizing an oligomer having a part or all of the repeating units in the target sequence, Examples include a method of polymerizing by selecting a substituent involved in condensation polymerization of each monomer to be used and a polymerization reaction to be used and controlling a sequence of repeating units.

Among the manufacturing method of the present invention, substituent (Y _t involved in condensation _{polymerization, Y u, Y t1, Y} u1, Y t2, Y u2, Y t3, Y u3, Y t4 and Y _u4, Y _5, Y ₆ , Y ₇ , Y ₈ , Y ₉ , Y ₁₀ , Y ₁₁ , Y ₁₂ , Y ₁₃ , Y ₁₄ , Y ₁₅ and Y ₁₆ ) are each independently a halogen atom, alkyl sulfonate group, aryl sulfonate group or arylalkyl A production method in which condensation polymerization is performed in the presence of a nickel zero-valent complex selected from sulfonate groups is preferred.
As raw material compounds, dihalogenated compounds, bis (alkyl sulfonate) compounds, bis (aryl sulfonate) compounds, bis (aryl alkyl sulfonate) compounds or halogen-alkyl sulfonate compounds, halogen-aryl sulfonate compounds, halogen-aryl alkyl sulfonate compounds, Examples thereof include alkyl sulfonate-aryl sulfonate compounds, alkyl sulfonate-aryl alkyl sulfonate compounds, and aryl sulfonate-aryl alkyl sulfonate compounds.

  In this case, for example, a halogen-alkyl sulfonate compound, a halogen-aryl sulfonate compound, a halogen-aryl alkyl sulfonate compound, an alkyl sulfonate-aryl sulfonate compound, an alkyl sulfonate-aryl alkyl sulfonate compound, or an aryl sulfonate-aryl alkyl sulfonate compound is used as a raw material compound. Thus, a method for producing a polymer compound in which the direction and sequence of repeating units are controlled can be mentioned.

Further, in the manufacturing method of the present invention, the substituents participating in condensation polymerization _{(Y t, Y u, Y} t1, Y u1, Y t2, Y u2, Y t3, Y u3, Y t4 and Y _u4, Y ₅ , Y ₆ , Y ₇ , Y ₈ , Y ₉ , Y ₁₀ , Y ₁₁ , Y ₁₂ , Y ₁₃ , Y ₁₄ , Y ₁₅ and Y ₁₆ ) are each independently a halogen atom, an alkyl sulfonate group, an aryl sulfonate group, A total (J) of moles of halogen atoms, alkyl sulfonate groups, aryl sulfonate groups, and arylalkyl sulfonate groups, which are selected from arylalkyl sulfonate groups, boric acid groups, or boric acid ester groups, and all the raw material compounds have boron The ratio of the total number of moles (K) of acid groups (—B (OH) ₂ ) and borate groups is substantially 1 (usually K / J is in the range of 0.7 to 1.2), nickel Use catalyst or palladium catalyst And condensation polymerization Te is preferred.
Specific combinations of raw material compounds include a combination of a dihalogenated compound, a bis (alkyl sulfonate) compound, a bis (aryl sulfonate) compound or a bis (aryl alkyl sulfonate) compound and a diboric acid compound or a diboric acid ester compound. .
Further, halogen-boric acid compounds, halogen-boric acid ester compounds, alkyl sulfonate-boric acid compounds, alkyl sulfonate-boric acid ester compounds, aryl sulfonate-boric acid compounds, aryl sulfonate-boric acid ester compounds, aryl alkyl sulfonate-borates Examples include acid compounds, arylalkyl sulfonate-boric acid compounds, and arylalkyl sulfonate-boric acid ester compounds.

  In this case, for example, as a raw material compound, a halogen-boric acid compound, a halogen-boric acid ester compound, an alkyl sulfonate-boric acid compound, an alkyl sulfonate-boric acid ester compound, an aryl sulfonate-boric acid compound, an aryl sulfonate-borate ester compound, A method of producing a polymer compound in which the direction and sequence of the repeating unit are controlled by using an arylalkyl sulfonate-boric acid compound, an arylalkyl sulfonate-boric acid compound, and an arylalkyl sulfonate-boric acid ester compound can be mentioned.

  The organic solvent varies depending on the compound and reaction to be used, but it is generally preferable that the solvent to be used is sufficiently deoxygenated and the reaction proceeds in an inert atmosphere in order to suppress side reactions. Similarly, it is preferable to perform a dehydration treatment. However, this is not the case in the case of a two-phase reaction with water, such as the Suzuki coupling reaction.

  Solvents include saturated hydrocarbons such as pentane, hexane, heptane, octane and cyclohexane, unsaturated hydrocarbons such as benzene, toluene, ethylbenzene and xylene, carbon tetrachloride, chloroform, dichloromethane, chlorobutane, bromobutane, chloropentane and bromopentane. Halogenated saturated hydrocarbons such as chlorohexane, bromohexane, chlorocyclohexane and bromocyclohexane, halogenated unsaturated hydrocarbons such as chlorobenzene, dichlorobenzene and trichlorobenzene, methanol, ethanol, propanol, isopropanol, butanol, t-butyl alcohol Alcohols such as formic acid, acetic acid, propionic acid, dimethyl ether, diethyl ether, methyl-t-butyl ether, tetra Ethers such as drofuran, tetrahydropyran, dioxane, trimethylamine, triethylamine, N, N, N ′, N′-tetramethylethylenediamine, amines such as pyridine, N, N-dimethylformamide, N, N-dimethylacetamide, N , N-diethylacetamide, amides such as N-methylmorpholine oxide, etc. are exemplified, and a single solvent or a mixed solvent thereof may be used. Of these, ethers are preferable, and tetrahydrofuran and diethyl ether are more preferable.

  In order to make it react, an alkali and a suitable catalyst are added suitably. These may be selected according to the reaction used. The alkali or catalyst is preferably one that is sufficiently dissolved in the solvent used in the reaction. As a method of mixing the alkali or catalyst, slowly add the alkali or catalyst solution while stirring the reaction solution under an inert atmosphere such as argon or nitrogen, or conversely, slowly add the reaction solution to the alkali or catalyst solution. And the method of adding.

  When the polymer compound of the present invention is used for a polymer LED or the like, its purity affects the performance of the device such as light emission characteristics. Therefore, after the monomer before polymerization is purified by a method such as distillation, sublimation purification, recrystallization, etc. It is preferable to polymerize. Further, after the polymerization, it is preferable to carry out a purification treatment such as reprecipitation purification and fractionation by chromatography. Among the polymer compounds of the present invention, those produced by a method of polymerizing with a nickel zero-valent complex are the device characteristics such as life of polymer LED, light emission starting voltage, current density, voltage increase during driving, or heat resistance. From the viewpoint of properties and the like.

Useful as a raw material for the polymer compound of the present invention (21), (21-1) ~ (21-4), (26), Y t in (26-1) ~ (26-3), Y u , Y _t1 , Y _u1, Y _t2 , Y _u2 , Y _t3 , Y _u3 , Y _t4, and Y _u4 represent halogens using, for example, coupling reaction, ring closure reaction, etc. (21), (21− 1) ~ (21-4), ( 26), (26-1) Y t, Y u of _{~ (26-3), Y t1,} Y u1, Y t2, Y u2, Y t3, Y u3, Y After synthesizing a compound having a structure in which _t4 and _Yu4 are replaced with hydrogen atoms, for example, halogenation is performed with various halogenating agents such as chlorine, bromine, iodine, N-chlorosuccinimide, N-bromosuccinimide, and benzyltrimethylammonium tribromide. To obtain.

Useful as a raw material for the polymer compound of the present invention (21), (21-1) ~ (21-4), (26), Y t in (26-1) ~ (26-3), Y u preferably when _{Y t1, Y u1, Y t2} , Y u2, Y t3, Y u3, Y t4 and Y _u4 is halogen, in view of easiness of purification after completion of the perspective and the reaction of the high molecular weight The halogen is preferably bromine.

In addition, among (21), (21-1) to (21-4), (26), and (26-1) to (26-3) useful as raw materials for the polymer compound of the present invention, Y _{t , Y u, Y t1, Y} u1, Y t2, Y u2, Y t3, Y u3, Y t4 and Y _u4 alkyl sulfonate group, aryl sulfonate group, or indicates an aryl alkyl sulfonate group, may, for example, respectively, A compound having a functional group derivable to a hydroxyl group such as an alkoxy group is subjected to a coupling reaction, a ring closure reaction or the like, and (21), (21-1) to (21-4), (26), (26-1) ) Y _t of _{~ (26-3), Y u,} Y t1, Y u1, Y t2, Y u2, Y t3, Y u3, the Y _t4 and Y _u4 the functional group capable of inducing the hydroxyl group such as an alkoxy group After synthesizing the replacement compound, use a dealkylation reagent such as boron tribromide By a variety of reactions such as, Y _t, Y _u, to synthesize _{Y t1, Y u1, Y t2} , Y u2, Y t3, Y u3, compounds of Y _t4 and Y _u4 replaced with a hydroxyl group, then, for example, It can be obtained by sulfonylating a hydroxyl group with various sulfonyl chlorides, sulfonic anhydrides and the like.

In addition, among (21), (21-1) to (21-4), (26), and (26-1) to (26-3) useful as raw materials for the polymer compound of the present invention, Y _{t , Y u, Y t1, Y} u1, Y t2, Y u2, Y t3, Y u3, Y t4 and Y _u4 those shown boric acid group or boric ester group, is by the method such as, (21 ), (21-1) ~ (21-4 ), (26), (26-1) Y t, Y u of _{~ (26-3), Y t1,} Y u1, Y t2, Y u2, Y t3 , Y _u3 , Y _t4, and Yu ₄ are replaced with halogen atoms, then synthesized with compounds such as alkyllithium and magnesium metal, and then borated with trimethylborate to convert halogen atoms to boric acid groups And, after borated, by reacting with alcohol to form borate ester It is. Further, Y _t , Y _u , Y _t1 , Y of (21), (21-1) to (21-4), (26), (26-1) to (26-3) by the above method or the like. _{u1, Y t2, Y u2,} Y t3, Y u3, the Y _t4 and Y _u4 halogen, to synthesize a compound obtained by replacing the trifluoromethanesulfonate group, then non-patent literature [Journal of Organic Chemistry, 11995,60, 7508-7510, Tetrahedoron Letters, 1997, 28 (19), 3447-3450], and the like. Among the polymer compounds of the present invention, those produced by a method of polymerizing with a nickel zero-valent complex are preferable from the viewpoint of life characteristics.

Next, the use of the polymer compound of the present invention will be described.
The polymer compound of the present invention usually emits fluorescence or phosphorescence in a solid state and can be used as a polymer light emitter (high molecular weight light emitting material).
Further, the polymer compound has an excellent charge transport ability, and can be suitably used as a polymer LED material or a charge transport material. The polymer LED using the polymer light emitter is a high-performance polymer LED that can be driven with low voltage and high efficiency. Therefore, the polymer LED can be preferably used for a backlight of a liquid crystal display, a curved or flat light source for illumination, a segment type display element, a dot matrix flat panel display, and the like.
The polymer compound of the present invention can also be used as a material for conductive thin films such as laser dyes, organic solar cell materials, organic semiconductors for organic transistors, conductive thin films, and organic semiconductor thin films.
Furthermore, it can also be used as a light-emitting thin film material that emits fluorescence or phosphorescence.

Next, the use of the compound of the present invention will be described.
The compound represented by the formula (14) can be used as an LED material or a charge transport material.

Next, the polymer LED of the present invention will be described.
The polymer LED of the present invention has an organic layer between electrodes composed of an anode and a cathode, and the organic layer contains the polymer compound of the present invention.
The organic layer (a layer containing an organic substance) may be any of a light emitting layer, a hole transport layer, an electron transport layer, and the like, but the organic layer is preferably a light emitting layer.

  Here, the light emitting layer refers to a layer having a function of emitting light, the hole transport layer refers to a layer having a function of transporting holes, and the electron transport layer is a layer having a function of transporting electrons. Say. The electron transport layer and the hole transport layer are collectively referred to as a charge transport layer. Two or more light emitting layers, hole transport layers, and electron transport layers may be used independently.

When the organic layer is a light emitting layer, the light emitting layer that is an organic layer may further contain a hole transporting material, an electron transporting material, or a light emitting material. Here, the light-emitting material refers to a material that exhibits fluorescence and / or phosphorescence.
When the polymer compound of the present invention and the hole transporting material are mixed, the mixing ratio of the hole transporting material is 1 wt% to 80 wt%, preferably 5 wt% to 60 wt% with respect to the entire mixture. It is. When the polymer material of the present invention and the electron transporting material are mixed, the mixing ratio of the electron transporting material is 1 wt% to 80 wt%, preferably 5 wt% to 60 wt% with respect to the entire mixture. Further, when the polymer compound of the present invention and the luminescent material are mixed, the mixing ratio of the luminescent material is 1 wt% to 80 wt%, preferably 5 wt% to 60 wt% with respect to the entire mixture. When the polymer compound of the present invention is mixed with a luminescent material, a hole transport material and / or an electron transport material, the mixing ratio of the luminescent material is 1 wt% to 50 wt% with respect to the entire mixture, Preferably, it is 5 wt% to 40 wt%, and the total amount of the hole transporting material and the electron transporting material is 1 wt% to 50 wt%, preferably 5 wt% to 40 wt%. The content is 99 wt% to 20 wt%.

As the hole-transporting material, electron-transporting material, and light-emitting material to be mixed, a known low-molecular compound, triplet light-emitting complex, or polymer compound can be used, but a polymer compound is preferably used. As the hole transporting material, electron transporting material and light emitting material of the polymer compound, WO99 / 13692, WO99 / 48160, GB2340304A, WO00 / 53656, WO01 / 19834, WO00 / 55927, GB23448316, WO00 / 46321, WO00 / 06665, WO99 / 54943, WO99 / 54385, US5777070, WO98 / 06773, WO97 / 05184, WO00 / 35987, WO00 / 53655, WO01 / 34722, WO99 / 24526, WO00 / 22027, WO00 / 22026, WO98 / 27136, US573636 , WO98 / 21262, US5741921, WO97 / 09394, WO96 / 29356, WO96 / 10617, EP0707. 20, WO 95/07955, JP 2001-181618, JP 2001-123156, JP 2001-3045, JP 2000-351967, JP 2000-303066, JP 2000-299189, JP 2000-252065, JP 2000-252065, JP 2000-136379, JP 2000-104057, JP 2000-80167, JP 10-324870, JP 10-114891, JP 9-111233, JP 9-45478, and the like, and derivatives thereof And copolymers, polyarylenes, derivatives and copolymers thereof, polyarylene vinylenes, derivatives and copolymers thereof, (co) polymers of aromatic amines and derivatives thereof.
Examples of low molecular weight fluorescent materials include naphthalene derivatives, anthracene or derivatives thereof, perylene or derivatives thereof, polymethine-based, xanthene-based, coumarin-based, cyanine-based pigments, 8-hydroxyquinoline or its derivatives of metals. A complex, an aromatic amine, tetraphenylcyclopentadiene or a derivative thereof, or tetraphenylbutadiene or a derivative thereof can be used.
Specifically, for example, known ones such as those described in JP-A-57-51781 and 59-194393 can be used.

Examples of triplet light emitting complexes include Ir (ppy) ₃ , Btp ₂ Ir (acac) having iridium as a central metal, PtOEP having platinum as a central metal, Eu (TTA) ₃ phen having a central metal as europium, and the like. Can be mentioned.

三重項発光錯体として具体的には、例えばＮａｔｕｒｅ，（１９９８），３９５，１５１、Ａｐｐｌ．Ｐｈｙｓ．Ｌｅｔｔ．（１９９９），７５（１），４、Ｐｒｏｃ．ＳＰＩＥ−Ｉｎｔ．Ｓｏｃ．Ｏｐｔ．Ｅｎｇ．（２００１），４１０５（Ｏｒｇａｎｉｃ Ｌｉｇｈｔ−Ｅｍｉｔｔｉｎｇ Ｍａｔｅｒｉａｌｓ ａｎｄ Ｄｅｖｉｃｅｓ ＩＶ），１１９、Ｊ．Ａｍ．Ｃｈｅｍ．Ｓｏｃ．，（２００１），１２３，４３０４、Ａｐｐｌ．Ｐｈｙｓ．Ｌｅｔｔ．，（１９９７），７１（１８），２５９６、Ｓｙｎ．Ｍｅｔ．，（１９９８），９４（１），１０３、Ｓｙｎ．Ｍｅｔ．，（１９９９），９９（２），１３６１、Ａｄｖ．Ｍａｔｅｒ．，（１９９９），１１（１０），８５２、Ｊｐｎ．Ｊ．Ａｐｐｌ．Ｐｈｙｓ．，３４，１８８３（１９９５）などに記載されている。

Specific examples of the triplet light-emitting complex include, for example, Nature, (1998), 395, 151, Appl. Phys. Lett. (1999), 75 (1), 4, Proc. SPIE-Int. Soc. Opt. Eng. (2001), 4105 (Organic Light-Emitting Materials and Devices IV), 119, J. MoI. Am. Chem. Soc. , (2001), 123, 4304, Appl. Phys. Lett. , (1997), 71 (18), 2596, Syn. Met. , (1998), 94 (1), 103, Syn. Met. , (1999), 99 (2), 1361, Adv. Mater. , (1999), 11 (10), 852, Jpn. J. et al. Appl. Phys. 34, 1883 (1995).

  The polymer compound of the present invention is characterized by high heat resistance. The glass transition temperature of the polymer compound is preferably 130 ° C. or higher, more preferably 150 ° C. or higher, and further preferably 160 ° C. or higher.

The polymer composition of the present invention contains at least one material selected from a hole transport material, an electron transport material and a light emitting material and the polymer compound of the present invention, and can be used as a light emitting material or a charge transport material. .
The content ratio of at least one material selected from the hole transport material, electron transport material, and light emitting material and the polymer compound of the present invention may be determined according to the use. The same content ratio as in the light emitting layer is preferable.

Another embodiment of the present invention is exemplified by a polymer composition containing two or more kinds of the polymer compound of the present invention (polymer compound containing a repeating unit represented by the formula (2)).
Specifically, a polymer composition containing two or more polymer compounds containing the repeating unit represented by the formula (2), wherein the total amount of the polymer compounds is 50% by weight or more of the polymer, When it is used as a light emitting material for LED, it is excellent in terms of luminous efficiency, life characteristics and the like, which is preferable. More preferably, the total amount of the polymer compound is 70% by weight or more of the whole.
The polymer composition of the present invention can enhance device characteristics such as lifetime as compared with the case where a polymer compound is used alone for a polymer LED.

In the polymer composition, a preferred example is a copolymer comprising one or more polymer compounds composed of the repeating unit represented by the formula (2) and 50 mol% or more of the repeating unit represented by the formula (2). It is a polymer composition containing one or more types of coal. It is more preferable that the copolymer contains 70 mol% or more of the repeating unit represented by the formula (2) from the viewpoints of light emission efficiency and life characteristics.
As another preferred example, a polymer composition comprising two or more types of copolymers containing 50 mol% or more of the repeating units represented by the formula (2), wherein the copolymers also contain different repeating units. Things are preferred. It is more preferable that at least one kind of the copolymer contains 70 mol% or more of the repeating unit represented by the formula (2) from the viewpoints of luminous efficiency and lifetime characteristics.
Furthermore, another preferred example includes two or more types of copolymers containing 50 mol% or more of the repeating unit represented by the formula (2), and the copolymers have different copolymerization ratios. A polymer composition comprising the same combination of repeating units is preferred. It is more preferable that at least one kind of the copolymer contains 70 mol% or more of the repeating unit represented by the formula (2) from the viewpoints of luminous efficiency and life characteristics.
Alternatively, as another preferred example, a polymer composition containing two or more polymer compounds composed of the repeating unit represented by the formula (2) is preferable.
As an example of a more preferable polymer composition, at least one polymer compound contained in the polymer composition shown in the above example is a copolymer containing 50 mol% or more of the repeating unit represented by the formula (2). It is a polymer and also contains a repeating unit represented by the formula (18), and the molar ratio of the repeating unit represented by the formula (2) and the repeating unit represented by the formula (18) is 99: 1. It is a polymer composition which becomes -50: 50. The molar ratio is more preferably 98: 2 to 70:30 from the viewpoints of luminous efficiency, life characteristics, and the like.
As another example of a more preferable polymer composition, one or more kinds of polymer compounds composed of the repeating unit represented by the formula (2) and 50 mol% or more of the repeating unit represented by the formula (2) are used. A copolymer comprising one or more types of copolymers, the copolymer comprising a repeating unit represented by the formula (2) and a repeating unit represented by the formula (18), and The polymer composition has a molar ratio of the repeating unit represented by the formula (2) and the repeating unit represented by the formula (18) of 90:10 to 50:50. The molar ratio is more preferably 90:10 to 60:40 from the viewpoints of luminous efficiency, life characteristics, and the like.

  When the polymer compound of the present invention is used as a polymer composition, the repeating unit represented by the formula (2) is from the viewpoints of solubility in an organic solvent and device characteristics such as light emission efficiency and lifetime characteristics, It is preferably selected from a repeating unit represented by the formula (2-1) or a repeating unit represented by the formula (2-2), more preferably a repeating unit represented by the formula (2-1). More preferably, a and b are 0 in 2-1). The repeating unit represented by the formula (18) is preferably a repeating unit represented by the formula 134 or a repeating unit represented by the formula 137, and the repeating unit represented by the formula (22) or the formula ( The repeating unit represented by 24) is more preferable.

  As the polymer composition of the present invention, one kind of polymer compound composed of the repeating unit represented by the formula (2) is used from the viewpoints of solubility in an organic solvent and device characteristics such as light emission efficiency and lifetime characteristics. A polymer composition containing one type of copolymer containing 50 mol% or more of the repeating unit represented by the formula (2), and a copolymer containing 50 mol% or more of the repeating unit represented by the formula (2). In addition, although the copolymerization ratios are different from each other, a polymer composition containing two types of copolymers composed of the same combination of repeating units is preferable.

The number average molecular weight in terms of polystyrene of the polymer composition of the present invention is usually about 10 ³ to 10 ⁸ , preferably 10 ⁴ to 10 ⁶ . The weight average molecular weight in terms of polystyrene is usually about 10 ³ to 10 ⁸ , and preferably 5 × 10 ^{4 to} 5 × 10 ⁶ from the viewpoint of film formability and efficiency in the case of an element. ^{5 to} 5 × 10 ⁶ is more preferable. Here, the average molecular weight of the polymer composition refers to a value obtained by analyzing a composition obtained by mixing two or more kinds of polymer compounds by GPC.

  As the film thickness of the light emitting layer of the polymer LED of the present invention, the optimum value varies depending on the material to be used, and it may be selected so that the driving voltage and the light emission efficiency are appropriate values, for example, 1 nm to 1 μm, Preferably it is 2 nm-500 nm, More preferably, it is 5 nm-200 nm.

  Examples of the method for forming the light emitting layer include a method by film formation from a solution. As a film forming method from a solution, a spin coating method, a casting method, a micro gravure coating method, a gravure coating method, a bar coating method, a roll coating method, a wire bar coating method, a dip coating method, a spray coating method, a screen printing method, Application methods such as a flexographic printing method, an offset printing method, and an ink jet printing method can be used. Printing methods such as a screen printing method, a flexographic printing method, an offset printing method, and an ink jet printing method are preferable in that pattern formation and multicolor coating are easy.

The solution (ink composition) used in the printing method or the like may contain at least one polymer compound of the present invention. In addition to the polymer compound of the present invention, a hole transport material, an electron transport material, Additives such as a light emitting material, a solvent, and a stabilizer may be included.
The ratio of the polymer compound of the present invention in the ink composition is usually 20 wt% to 100 wt%, preferably 40 wt% to 100 wt%, based on the total weight of the composition excluding the solvent.
When the ink composition contains a solvent, the ratio of the solvent is 1 wt% to 99.9 wt%, preferably 60 wt% to 99.5 wt%, and more preferably 80 wt% with respect to the total weight of the composition. % To 99.0 wt%.
The viscosity of the ink composition varies depending on the printing method. However, when the ink composition passes through a discharge device such as an ink jet printing method, the viscosity is 2 at 25 ° C. to prevent clogging during flight and flight bending. It is preferably in the range of -20 mPa · s, more preferably in the range of 5-20 mPa · s, and even more preferably in the range of 7-20 mPa · s.

  The solution of the present invention may contain an additive for adjusting viscosity and / or surface tension in addition to the polymer compound of the present invention. As the additive, a high molecular weight polymer compound (thickener) for increasing the viscosity, a poor solvent, a low molecular weight compound for decreasing the viscosity, a surfactant for decreasing the surface tension, and the like are appropriately combined. Use it.

The high molecular weight polymer compound may be any compound that is soluble in the same solvent as the polymer compound of the present invention and does not inhibit light emission or charge transport. For example, high molecular weight polystyrene, polymethyl methacrylate, or a polymer compound of the present invention having a large molecular weight can be used. The weight average molecular weight is preferably 500,000 or more, more preferably 1,000,000 or more.
A poor solvent can also be used as a thickener. That is, the viscosity can be increased by adding a small amount of a poor solvent for the solid content in the solution. When a poor solvent is added for this purpose, the type and amount of the solvent may be selected as long as the solid content in the solution does not precipitate. Considering the stability during storage, the amount of the poor solvent is preferably 50 wt% or less, more preferably 30 wt% or less with respect to the entire solution.

  The solution of the present invention may contain an antioxidant in addition to the polymer compound of the present invention in order to improve storage stability. The antioxidant is not particularly limited as long as it is soluble in the same solvent as the polymer compound of the present invention and does not inhibit light emission or charge transport, and examples thereof include phenol-based antioxidants and phosphorus-based antioxidants.

  As a solvent used for film formation from a solution, a solvent capable of dissolving or uniformly dispersing the polymer compound of the present invention is preferable. Chlorinated solvents such as chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene and o-dichlorobenzene, ether solvents such as tetrahydrofuran and dioxane, and aromatic solvents such as toluene and xylene. Hydrocarbon solvents, cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane, n-decane and other aliphatic hydrocarbon solvents, acetone, methyl ethyl ketone, cyclohexanone, etc. Ketone solvents, ester solvents such as ethyl acetate, butyl acetate, ethyl cellosolve acetate, ethylene glycol, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, dimethoxyethane Polyhydric alcohols such as propylene glycol, diethoxymethane, triethylene glycol monoethyl ether, glycerin, 1,2-hexanediol and derivatives thereof, alcohol solvents such as methanol, ethanol, propanol, isopropanol, cyclohexanol, dimethyl sulfoxide, etc. And amide solvents such as N-methyl-2-pyrrolidone and N, N-dimethylformamide. These organic solvents can be used alone or in combination. Of the above solvents, it is preferable to include one or more organic solvents having a structure containing at least one benzene ring, a melting point of 0 ° C. or lower, and a boiling point of 100 ° C. or higher.

  As the type of solvent, aromatic hydrocarbon solvents, aliphatic hydrocarbon solvents, ester solvents, ketone solvents are preferable from the viewpoints of solubility in organic solvents, uniformity during film formation, viscosity characteristics, and the like. , Toluene, xylene, ethylbenzene, diethylbenzene, trimethylbenzene, n-propylbenzene, i-propylbenzene, n-butylbenzene, i-butylbenzene, s-butylbenzene, anisole, ethoxybenzene, 1-methylnaphthalene, cyclohexane, cyclohexanone Cyclohexylbenzene, bicyclohexyl, cyclohexenylcyclohexanone, n-heptylcyclohexane, n-hexylcyclohexane, 2-propylcyclohexanone, 2-heptanone, 3-heptanone, 4-heptanone, 2-octanone, 2-nonanone, - decanone, tetralin, dicyclohexyl ketone, cyclohexanone, phenyl hexane, decalin are preferable, xylene, anisole, cyclohexylbenzene, bicyclohexyl, cyclohexanone, phenyl hexane, more preferably contains at least one of the decalin.

  The number of solvents in the solution is preferably two or more, more preferably two to three, and even more preferably two from the viewpoints of film formability and device characteristics.

  When two kinds of solvents are contained in the solution, one of the solvents may be in a solid state at 25 ° C. From the viewpoint of film formability, it is preferable that one type of solvent is a solvent having a boiling point of 180 ° C. or higher, and the other one type of solvent is preferably a solvent having a boiling point of 180 ° C. or lower. More preferably, the solvent is a solvent having a boiling point of 180 ° C. or lower. From the viewpoint of viscosity, it is preferable that 1 wt% or more of the high molecular compound dissolves at 60 ° C. in one of the two solvents, and one solvent out of the two solvents contains 1 wt% or more at 25 ° C. It is preferable that the polymer compound is dissolved.

  When three types of solvents are contained in the solution, one or two of them may be in a solid state at 25 ° C. From the viewpoint of film formability, at least one of the three solvents is preferably a solvent having a boiling point of 180 ° C. or higher, and at least one solvent is preferably a solvent having a boiling point of 180 ° C. or lower. At least one of the types of solvents is a solvent having a boiling point of 200 ° C. or more and 300 ° C. or less, and at least one of the solvents is more preferably a solvent having a boiling point of 180 ° C. or less. From the viewpoint of viscosity, it is preferable that 1 wt% or more of the polymer compound is dissolved in two of the three types of solvents at 60 ° C., and one type of the three types of solvents is preferable. It is preferable that 1 wt% or more of the polymer compound dissolves at 25 ° C.

  When two or more kinds of solvents are contained in the solution, the solvent having the highest boiling point is preferably 40 to 90 wt% of the weight of all the solvents in the solution, from the viewpoint of viscosity and film formability, and 50 to 90 wt% % Is more preferable, and 65 to 85 wt% is more preferable.

  Examples of the solution of the present invention containing two or more solvents include a solution composed of anisole and bicyclohexyl, a solution composed of anisole and cyclohexylbenzene, a solution composed of xylene and bicyclohexyl, and a solution composed of xylene and cyclohexylbenzene.

  From the viewpoint of the solubility of the polymer compound in the solvent, the difference between the solubility parameter of the solvent and the solubility parameter of the polymer compound is preferably 10 or less, and more preferably 7 or less.

The solubility parameter of the solvent and the solubility parameter of the polymer compound can be determined by the methods described in “Solvent Handbook (Kodansha, 1976)”.

  The polymer compound of the present invention contained in the solution may be one type or two or more types, and may contain a polymer compound other than the polymer compound of the present invention as long as device characteristics and the like are not impaired.

  The solution of the present invention may contain water, metal and a salt thereof in the range of 1 to 1000 ppm. Specific examples of the metal include lithium, sodium, calcium, potassium, iron, copper, nickel, aluminum, zinc, chromium, manganese, cobalt, platinum, iridium and the like. Moreover, silicon, phosphorus, fluorine, chlorine, bromine may be included in a range of 1 to 1000 ppm.

  Using the solution of the present invention, spin coating method, casting method, micro gravure coating method, gravure coating method, bar coating method, roll coating method, wire bar coating method, dip coating method, spray coating method, screen printing method, flexographic method A thin film can be produced by a printing method, an offset printing method, an inkjet printing method, or the like. Among these, the solution of the present invention is preferably used for a film forming method by a screen printing method, a flexographic printing method, an offset printing method, and an ink jet printing method, and more preferably used for a film forming by an ink jet method.

  When a thin film is produced using the solution of the present invention, since the glass transition temperature of the polymer compound contained in the solution is high, it can be baked at a temperature of 100 ° C. or higher, and baked at a temperature of 130 ° C. However, the deterioration of the device characteristics is very small. Depending on the type of polymer compound, baking at a temperature of 160 ° C. or higher is also possible.

  Examples of thin films that can be produced using the solution of the present invention include luminescent thin films, conductive thin films, and organic semiconductor thin films.

  In the luminescent thin film of the present invention, the quantum yield of light emission is preferably 50% or more, more preferably 60% or more, and 70% or more from the viewpoint of the brightness of the device, light emission voltage, and the like. Is more preferable.

  The conductive thin film of the present invention preferably has a surface resistance of 1 KΩ / □ or less. The electrical conductivity can be increased by doping the thin film with a Lewis acid, an ionic compound, or the like. The surface resistance is more preferably 100Ω / □ or less, and further preferably 10Ω / □.

In the organic semiconductor thin film of the present invention, the higher one of the electron mobility and the hole mobility is preferably 10 ⁻⁵ cm ² / V / second or more. More preferably, it is 10 ^<-3 > cm < ² > / V / second or more, More preferably, it is 10 ^<-1 > cm < ² > / V / second or more.
An organic transistor can be formed by forming the organic semiconductor thin film on a Si substrate on which an insulating film such as SiO2 and a gate electrode are formed, and forming a source electrode and a drain electrode with Au or the like.

  The polymer light-emitting device of the present invention preferably has a maximum external quantum yield of 1% or more when a voltage of 3.5 V or more is applied between the anode and the cathode from the viewpoint of device brightness and the like. More preferably 5% or more.

  The polymer light-emitting device of the present invention (hereinafter referred to as polymer LED) is a polymer LED in which an electron transport layer is provided between the cathode and the light-emitting layer, and hole transport between the anode and the light-emitting layer. Examples include a polymer LED provided with a layer, a polymer LED provided with an electron transport layer between a cathode and a light-emitting layer, and a hole transport layer provided between an anode and a light-emitting layer.

For example, the following structures a) to d) are specifically exemplified.
a) Anode / light emitting layer / cathode b) Anode / hole transport layer / light emitting layer / cathode c) Anode / light emitting layer / electron transport layer / cathode d) Anode / hole transport layer / light emitting layer / electron transport layer / cathode (Here, / indicates that each layer is laminated adjacently. The same shall apply hereinafter.)

The polymer LED of the present invention includes those in which the polymer compound of the present invention is contained in a hole transport layer and / or an electron transport layer.
When the polymer compound of the present invention is used for a hole transport layer, the polymer compound of the present invention is preferably a polymer compound containing a hole transporting group, and specific examples thereof include aromatic amines. And a copolymer with stilbene.
When the polymer compound of the present invention is used for an electron transport layer, the polymer compound of the present invention is preferably a polymer compound containing an electron transporting group, and specific examples thereof include oxadiazole. And a copolymer with triazole, a copolymer with quinoline, a copolymer with quinoxaline, a copolymer with benzothiadiazole, and the like.

  When the polymer LED of the present invention has a hole transport layer, the hole transport material used is polyvinyl carbazole or a derivative thereof, polysilane or a derivative thereof, polysiloxane having an aromatic amine in a side chain or a main chain. Derivatives, pyrazoline derivatives, arylamine derivatives, stilbene derivatives, triphenyldiamine derivatives, polyaniline or derivatives thereof, polythiophene or derivatives thereof, polypyrrole or derivatives thereof, poly (p-phenylene vinylene) or derivatives thereof, or poly (2,5- Thienylene vinylene) or a derivative thereof.

  Specifically, as the hole transporting material, JP-A-63-70257, JP-A-63-175860, JP-A-2-135359, JP-A-2-135361, and JP-A-2-209988 are disclosed. Examples described in JP-A-3-37992 and JP-A-3-152184 are exemplified.

  Among these, as a hole transporting material used for the hole transport layer, polyvinyl carbazole or a derivative thereof, polysilane or a derivative thereof, a polysiloxane derivative having an aromatic amine compound group in a side chain or a main chain, a polyaniline or a derivative thereof , Polythiophene or a derivative thereof, poly (p-phenylene vinylene) or a derivative thereof, or a polymer hole transporting material such as poly (2,5-thienylene vinylene) or a derivative thereof is preferable, and polyvinyl carbazole or a derivative thereof is more preferable Derivatives, polysilanes or derivatives thereof, and polysiloxane derivatives having an aromatic amine in the side chain or main chain.

Examples of the hole transport material of the low molecular weight compound include pyrazoline derivatives, arylamine derivatives, stilbene derivatives, and triphenyldiamine derivatives. In the case of a low molecular weight hole transporting material, it is preferably used by being dispersed in a polymer binder.

  As the polymer binder to be mixed, those not extremely disturbing charge transport are preferable, and those showing no strong absorption against visible light are suitably used. As the polymer binder, poly (N-vinylcarbazole), polyaniline or a derivative thereof, polythiophene or a derivative thereof, poly (p-phenylenevinylene) or a derivative thereof, poly (2,5-thienylenevinylene) or a derivative thereof, polycarbonate , Polyacrylate, polymethyl acrylate, polymethyl methacrylate, polystyrene, polyvinyl chloride, polysiloxane and the like.

  Polyvinylcarbazole or a derivative thereof is obtained, for example, from a vinyl monomer by cation polymerization or radical polymerization.

  Examples of polysilane or derivatives thereof include compounds described in Chem. Rev. 89, 1359 (1989) and GB 2300196 published specification. As the synthesis method, the methods described in these can be used, but the Kipping method is particularly preferably used.

  Since polysiloxane or a derivative thereof has almost no hole transporting property in the siloxane skeleton structure, those having the structure of the low molecular hole transporting material in the side chain or main chain are preferably used. Particularly, those having a hole transporting aromatic amine in the side chain or main chain are exemplified.

  Although there is no restriction | limiting in the film-forming method of a positive hole transport layer, The method by the film-forming from a mixed solution with a polymer binder is illustrated with a low molecular hole transport material. In the case of a polymer hole transporting material, a method by film formation from a solution is exemplified.

  As a solvent used for film formation from a solution, a solvent capable of dissolving or uniformly dispersing a hole transporting material is preferable. Chlorinated solvents such as chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene and o-dichlorobenzene, ether solvents such as tetrahydrofuran and dioxane, and aromatic solvents such as toluene and xylene. Hydrocarbon solvents, cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane, n-decane and other aliphatic hydrocarbon solvents, acetone, methyl ethyl ketone, cyclohexanone, etc. Ketone solvents, ester solvents such as ethyl acetate, butyl acetate, ethyl cellosolve acetate, ethylene glycol, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, dimethoxyethane Polyhydric alcohols such as propylene glycol, diethoxymethane, triethylene glycol monoethyl ether, glycerin, 1,2-hexanediol and derivatives thereof, alcohol solvents such as methanol, ethanol, propanol, isopropanol, cyclohexanol, dimethyl sulfoxide, etc. And amide solvents such as N-methyl-2-pyrrolidone and N, N-dimethylformamide. These organic solvents can be used alone or in combination.

  Examples of film formation methods from solution include spin coating from solution, casting method, micro gravure coating method, gravure coating method, bar coating method, roll coating method, wire bar coating method, dip coating method, spray coating method, screen Coating methods such as a printing method, a flexographic printing method, an offset printing method, and an inkjet printing method can be used.

  The film thickness of the hole transport layer differs depending on the material used, and may be selected so that the drive voltage and the light emission efficiency are appropriate. However, at least a thickness that does not cause pinholes is required. If it is too thick, the driving voltage of the element becomes high, which is not preferable. Therefore, the film thickness of the hole transport layer is, for example, 1 nm to 1 μm, preferably 2 nm to 500 nm, and more preferably 5 nm to 200 nm.

  When the polymer LED of the present invention has an electron transport layer, known materials can be used as the electron transport material used, such as oxadiazole derivatives, anthraquinodimethane or derivatives thereof, benzoquinone or derivatives thereof, naphthoquinone or Derivatives thereof, anthraquinone or derivatives thereof, tetracyanoanthraquinodimethane or derivatives thereof, fluorenone derivatives, diphenyldicyanoethylene or derivatives thereof, diphenoquinone derivatives, or metal complexes of 8-hydroxyquinoline or derivatives thereof, polyquinoline or derivatives thereof, polyquinoxaline Alternatively, derivatives thereof, polyfluorene or derivatives thereof, and the like are exemplified.

  Specifically, JP-A-63-70257, JP-A-63-175860, JP-A-2-135359, JP-A-2-135361, JP-A-2-20988, JP-A-3-37992, The thing etc. which are described in the same 3-152184 gazette are illustrated.

  Of these, oxadiazole derivatives, benzoquinone or derivatives thereof, anthraquinones or derivatives thereof, or metal complexes of 8-hydroxyquinoline or derivatives thereof, polyquinoline or derivatives thereof, polyquinoxaline or derivatives thereof, polyfluorene or derivatives thereof are preferred, 2- (4-biphenylyl) -5- (4-t-butylphenyl) -1,3,4-oxadiazole, benzoquinone, anthraquinone, tris (8-quinolinol) aluminum, and polyquinoline are more preferable.

  There are no particular restrictions on the method of forming the electron transport layer, but for low molecular weight electron transport materials, vacuum deposition from powder, or by film formation from a solution or molten state, solution for polymer electron transport materials is possible. Or the method by the film-forming from a molten state is illustrated, respectively. When forming a film from a solution or a molten state, the above polymer binder may be used in combination.

  As a solvent used for film formation from a solution, a solvent capable of dissolving or uniformly dispersing an electron transport material and / or a polymer binder is preferable. Chlorinated solvents such as chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene and o-dichlorobenzene, ether solvents such as tetrahydrofuran and dioxane, and aromatic solvents such as toluene and xylene. Hydrocarbon solvents, cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane, n-decane and other aliphatic hydrocarbon solvents, acetone, methyl ethyl ketone, cyclohexanone, etc. Ketone solvents, ester solvents such as ethyl acetate, butyl acetate, ethyl cellosolve acetate, ethylene glycol, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, dimethoxyethane Polyhydric alcohols such as propylene glycol, diethoxymethane, triethylene glycol monoethyl ether, glycerin, 1,2-hexanediol and derivatives thereof, alcohol solvents such as methanol, ethanol, propanol, isopropanol, cyclohexanol, dimethyl sulfoxide, etc. And amide solvents such as N-methyl-2-pyrrolidone and N, N-dimethylformamide. These organic solvents can be used alone or in combination.

  Examples of film formation methods from a solution or a molten state include spin coating, casting, micro gravure coating, gravure coating, bar coating, roll coating, wire bar coating, dip coating, spray coating, and screen. Coating methods such as a printing method, a flexographic printing method, an offset printing method, and an inkjet printing method can be used.

  The polymer compound of the present invention can also be used as a polymer field effect transistor. As a structure of a polymer field effect transistor, a source electrode and a drain electrode are usually provided in contact with an active layer made of a polymer, and a gate electrode is provided with an insulating layer in contact with the active layer interposed therebetween. Just do it.

  The polymer field effect transistor is usually formed on a supporting substrate. The material of the supporting substrate is not particularly limited as long as the characteristics as a field effect transistor are not impaired, but a glass substrate, a flexible film substrate, or a plastic substrate can also be used.

  The field effect transistor can be manufactured by a known method, for example, a method described in JP-A-5-110069.

  In forming the active layer, it is very advantageous and preferable to use an organic solvent-soluble polymer. As a film forming method from a solution in which a polymer is dissolved in an organic solvent, a spin coating method, a casting method, a micro gravure coating method, a gravure coating method, a bar coating method, a roll coating method, a wire bar coating method, a dip coating method, Coating methods such as spray coating, screen printing, flexographic printing, offset printing, and inkjet printing can be used.

A sealed polymer field effect transistor obtained by sealing a polymer field effect transistor after forming the polymer field effect transistor is preferable. Thereby, the polymer field effect transistor is shielded from the atmosphere, and the deterioration of the characteristics of the polymer field transistor can be suppressed.
Examples of the sealing method include a method of covering with a UV curable resin, a thermosetting resin or an inorganic SiONx film, and a method of bonding a glass plate or film with a UV curable resin or a thermosetting resin. In order to effectively shut off from the atmosphere, it is preferable to perform the steps from the preparation of the polymer field-effect transistor to the sealing without exposure to the atmosphere (for example, in a dry nitrogen atmosphere or in a vacuum).

  The film thickness of the electron transport layer varies depending on the material used, and may be selected so that the drive voltage and light emission efficiency are appropriate. However, at least a thickness that does not cause pinholes is required. If the thickness is too thick, the driving voltage of the element increases, which is not preferable. Therefore, the thickness of the electron transport layer is, for example, 1 nm to 1 μm, preferably 2 nm to 500 nm, and more preferably 5 nm to 200 nm.

  Further, among the charge transport layers provided adjacent to the electrodes, those having a function of improving the charge injection efficiency from the electrodes and having the effect of lowering the driving voltage of the element are particularly charge injection layers (hole injection layers). , An electron injection layer).

Further, in order to improve adhesion with the electrode and charge injection from the electrode, the charge injection layer or an insulating layer having a thickness of 2 nm or less may be provided adjacent to the electrode, and the adhesion at the interface may be improved. In order to prevent mixing, a thin buffer layer may be inserted at the interface between the charge transport layer and the light emitting layer.
The order and number of layers to be laminated, and the thickness of each layer can be appropriately used in consideration of light emission efficiency and element lifetime.

In the present invention, a polymer LED provided with a charge injection layer (electron injection layer, hole injection layer) includes a polymer LED provided with a charge injection layer adjacent to the cathode, and a charge injection layer adjacent to the anode. The provided polymer LED is mentioned.
For example, the following structures e) to p) are specifically mentioned.
e) Anode / hole injection layer / light emitting layer / cathode f) Anode / light emitting layer / electron injection layer / cathode g) Anode / hole injection layer / light emitting layer / electron injection layer / cathode h) Anode / hole injection layer / Hole transport layer / light emitting layer / cathode i) anode / hole transport layer / light emitting layer / electron injection layer / cathode j) anode / hole injection layer / hole transport layer / light emitting layer / electron injection layer / cathode k ) Anode / hole injection layer / light emitting layer / electron transport layer / cathode l) Anode / light emitting layer / electron transport layer / electron injection layer / cathode m) Anode / hole injection layer / light emitting layer / electron transport layer / electron injection Layer / cathode n) anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / cathode o) anode / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode p) anode / Hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode

As described above, the polymer LED of the present invention includes those in which the polymer compound of the present invention is contained in a hole transport layer and / or an electron transport layer.
The polymer LED of the present invention includes those in which the polymer compound of the present invention is contained in a hole injection layer and / or an electron injection layer. When the polymer compound of the present invention is used for the hole injection layer, it is preferably used simultaneously with the electron accepting compound. Further, when the polymer compound of the present invention is used for an electron transport layer, it is preferably used simultaneously with an electron donating compound. Here, for simultaneous use, there are methods such as mixing, copolymerization and introduction as a side chain.

  Specific examples of the charge injection layer include a layer containing a conductive polymer, an intermediate between the anode material and the hole transporting material included in the hole transporting layer, provided between the anode and the hole transporting layer. A layer containing a material having an ionization potential of the value, a material provided between the cathode and the electron transport layer, and a material having an electron affinity of an intermediate value between the cathode material and the electron transport material contained in the electron transport layer Examples include layers.

When the charge injection layer is a layer containing a conductive polymer, the electrical conductivity of the conductive polymer is preferably 10 ⁻⁵ S / cm or more and 10 ³ or less, and the leakage current between the light emitting pixels is reduced. In order to achieve this, 10 ⁻⁵ S / cm to 10 ² is more preferable, and 10 ⁻⁵ S / cm to 10 ¹ is more preferable.

When the charge injection layer is a layer containing a conductive polymer, the electrical conductivity of the conductive polymer is preferably 10 ⁻⁵ S / cm or more and 10 ³ S / cm or less. in order to reduce the current, more preferably less 10 ^-5 S / cm or more and 10 ² S / cm, more preferably less 10 ^-5 S / cm or more and 10 ¹ S / cm.
Usually, in order to make the electric conductivity of the conductive polymer 10 ⁻⁵ S / cm or more and 10 ³ or less, the conductive polymer is doped with an appropriate amount of ions.

The type of ions to be doped is an anion for the hole injection layer and a cation for the electron injection layer. Examples of anions include polystyrene sulfonate ions, alkylbenzene sulfonate ions, camphor sulfonate ions, and examples of cations include lithium ions, sodium ions, potassium ions, tetrabutylammonium ions, and the like.
The thickness of the charge injection layer is, for example, 1 nm to 100 nm, and preferably 2 nm to 50 nm.

  The material used for the charge injection layer may be appropriately selected in relation to the material of the electrode and the adjacent layer. Polyaniline and its derivatives, polythiophene and its derivatives, polypyrrole and its derivatives, polyphenylene vinylene and its derivatives, polythienylene vinylene And derivatives thereof, polyquinoline and derivatives thereof, polyquinoxaline and derivatives thereof, conductive polymers such as polymers containing an aromatic amine structure in the main chain or side chain, metal phthalocyanines (such as copper phthalocyanine), and carbon .

  An insulating layer having a thickness of 2 nm or less has a function of facilitating charge injection. Examples of the material for the insulating layer include metal fluorides, metal oxides, and organic insulating materials. As the polymer LED provided with the insulating layer having a thickness of 2 nm or less, the polymer LED provided with the insulating layer having a thickness of 2 nm or less adjacent to the cathode, or the insulating layer having a thickness of 2 nm or less provided adjacent to the anode. Polymer LED is mentioned.

Specific examples include the following structures q) to ab).
q) Anode / insulating layer with a thickness of 2 nm or less / light emitting layer / cathode r) Anode / light emitting layer / insulating layer with a thickness of 2 nm or less / cathode s) Anode / insulating layer with a thickness of 2 nm or less / light emitting layer / film thickness 2 nm Insulating layer / cathode t) Anode / insulating layer with a thickness of 2 nm or less / hole transport layer / light emitting layer / cathode u) Anode / hole transporting layer / light emitting layer / insulating layer with a thickness of 2 nm or less / cathode v) Anode / insulating layer with a thickness of 2 nm or less / hole transport layer / light emitting layer / insulating layer with a thickness of 2 nm or less / cathode w) anode / insulating layer with a thickness of 2 nm or less / light emitting layer / electron transport layer / cathode x) anode / Light emitting layer / electron transport layer / insulating layer with a thickness of 2 nm or less / cathode y) anode / insulating layer with a thickness of 2 nm or less / light emitting layer / electron transport layer / insulating layer with a thickness of 2 nm or less / cathode z) anode / film Insulating layer with a thickness of 2 nm or less / hole transport layer / light emitting layer / electron transport layer / cathode aa) anode / hole transport layer / light emitting layer / electron transport Layer / insulating layer with a film thickness of 2 nm or less / cathode ab) anode / insulating layer with a film thickness of 2 nm or less / hole transport layer / light emitting layer / electron transport layer / insulating layer with a film thickness of 2 nm or less / cathode Includes the polymer compound of the present invention in any of the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer, and the electron injection layer in the element structures exemplified in the above a) to ab). Things can be given.

  The substrate on which the polymer LED of the present invention is formed may be any substrate that does not change when the electrode is formed and the organic layer is formed, and examples thereof include glass, plastic, polymer film, and silicon substrate. In the case of an opaque substrate, the opposite electrode is preferably transparent or translucent.

Usually, at least one of the anode and the cathode of the polymer LED of the present invention is transparent or translucent. The anode side is preferably transparent or translucent.
As the material of the anode, a conductive metal oxide film, a translucent metal thin film, or the like is used. Specifically, indium oxide, zinc oxide, tin oxide, and a composite film made of conductive glass made of indium / tin / oxide (ITO), indium / zinc / oxide, etc. (NESA) Etc.), gold, platinum, silver, copper and the like are used, and ITO, indium / zinc / oxide, and tin oxide are preferable. Examples of the production method include a vacuum deposition method, a sputtering method, an ion plating method, a plating method, and the like. Further, an organic transparent conductive film such as polyaniline or a derivative thereof, polythiophene or a derivative thereof may be used as the anode.
The film thickness of the anode can be appropriately selected in consideration of light transmittance and electric conductivity, and is, for example, 10 nm to 10 μm, preferably 20 nm to 1 μm, more preferably 50 nm to 500 nm. is there.
Further, in order to facilitate charge injection on the anode, a layer made of a phthalocyanine derivative, a conductive polymer, carbon or the like, or an average film thickness of 2 nm or less made of a metal oxide, a metal fluoride, an organic insulating material, or the like. A layer may be provided.

As a material of the cathode used in the polymer LED of the present invention, a material having a small work function is preferable. For example, metals such as lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium, barium, aluminum, scandium, vanadium, zinc, yttrium, indium, cerium, samarium, europium, terbium, ytterbium, and their Two or more of these alloys, or an alloy of one or more of them and one or more of gold, silver, platinum, copper, manganese, titanium, cobalt, nickel, tungsten, tin, graphite or graphite intercalation compound, etc. Is used. Examples of the alloy include magnesium-silver alloy, magnesium-indium alloy, magnesium-aluminum alloy, indium-silver alloy, lithium-aluminum alloy, lithium-magnesium alloy, lithium-indium alloy, calcium-aluminum alloy, and the like. The cathode may have a laminated structure of two or more layers.
The thickness of the cathode can be appropriately selected in consideration of electric conductivity and durability, but is, for example, 10 nm to 10 μm, preferably 20 nm to 1 μm, and more preferably 50 nm to 500 nm.

  As a method for producing the cathode, a vacuum deposition method, a sputtering method, a laminating method in which a metal thin film is thermocompression bonded, or the like is used. Further, a layer made of a conductive polymer or a layer made of a metal oxide, a metal fluoride, an organic insulating material or the like having an average film thickness of 2 nm or less may be provided between the cathode and the organic material layer. A protective layer for protecting the polymer LED may be attached. In order to stably use the polymer LED for a long period of time, it is preferable to attach a protective layer and / or a protective cover in order to protect the element from the outside.

  As the protective layer, a polymer compound, metal oxide, metal fluoride, metal boride, metal nitride, organic-inorganic hybrid material, or the like can be used. Further, as the protective cover, a glass plate, a plastic plate having a low water permeability treatment on the surface, or the like can be used, and a method of sealing the cover by bonding it to the element substrate with a heat effect resin or a photo-curing resin is preferable. Used for. If a space is maintained using a spacer, it is easy to prevent the element from being damaged. If an inert gas such as nitrogen or argon is sealed in the space, the cathode can be prevented from being oxidized, and moisture adsorbed in the manufacturing process by installing a desiccant such as barium oxide in the space. It becomes easy to suppress giving an image to an element. Among these, it is preferable to take any one or more measures.

The polymer LED of the present invention can be used as a backlight for a planar light source, a segment display device, a dot matrix display device, and a liquid crystal display device.
In order to obtain planar light emission using the polymer LED of the present invention, the planar anode and cathode may be arranged so as to overlap each other. In addition, in order to obtain pattern-like light emission, a method of installing a mask provided with a pattern-like window on the surface of the planar light-emitting element, an organic material layer of a non-light-emitting portion is formed extremely thick and substantially non- There are a method of emitting light and a method of forming either one of the anode or the cathode or both electrodes in a pattern. By forming a pattern by any of these methods and arranging some electrodes so that they can be turned on / off independently, a segment type display element capable of displaying numbers, letters, simple symbols and the like can be obtained. Further, in order to obtain a dot matrix element, both the anode and the cathode may be formed in a stripe shape and arranged so as to be orthogonal to each other. Partial color display and multi-color display are possible by a method of separately coating a plurality of types of polymeric fluorescent substances having different emission colors or a method using a color filter or a fluorescence conversion filter. The dot matrix element can be driven passively or may be driven actively in combination with TFTs. These display elements can be used as display devices for computers, televisions, mobile terminals, mobile phones, car navigation systems, video camera viewfinders, and the like.

  Furthermore, the planar light emitting element is a self-luminous thin type, and can be suitably used as a planar light source for a backlight of a liquid crystal display device or a planar illumination light source. If a flexible substrate is used, it can be used as a curved light source or display device.

  EXAMPLES Examples will be shown below for illustrating the present invention in more detail, but the present invention is not limited to these examples.

(Number average molecular weight and weight average molecular weight)
Here, regarding the number average molecular weight and the weight average molecular weight, the polystyrene-equivalent number average molecular weight and weight average molecular weight were determined by GPC (manufactured by Shimadzu Corporation: LC-10Avp). The polymer to be measured was dissolved in tetrahydrofuran to a concentration of about 0.5 wt%, and 50 μL was injected into GPC. Tetrahydrofuran was used as the mobile phase of GPC, and flowed at a flow rate of 0.6 mL / min. As for the column, two TSKgel SuperHM-H (manufactured by Tosoh) and one TSKgel SuperH2000 (manufactured by Tosoh) were connected in series. A differential refractive index detector (manufactured by Shimadzu Corporation: RID-10A) was used as the detector.

(Fluorescence spectrum)
The fluorescence spectrum was measured by the following method. A polymer thin film was prepared by spin coating a 0.8 wt% polymer solution on quartz. This thin film was excited at a wavelength of 350 nm, and the fluorescence spectrum was measured using a fluorescence spectrophotometer (Fluorolog manufactured by Horiba, Ltd.). In order to obtain the relative fluorescence intensity in the thin film, the intensity of the Raman line of water is used as a standard, the fluorescence spectrum plotted with wavenumber is integrated in the spectrum measurement range, and measured using a spectrophotometer (Varian Cary 5E). The value assigned by the absorbance at the excitation wavelength was determined.

(Glass-transition temperature)
The glass transition temperature was determined by DSC (DSC2920, manufactured by TA Instruments).

不活性雰囲気下で、５００ｍｌの３つ口フラスコに酢酸２２５ｇを入れ、５−ｔ−ブチル−ｍ−キシレン２４．３ｇを加えた。続いて臭素３１．２ｇを加えた後、１５〜２０℃で３時間反応させた。
反応液を水５００ｍｌに加え析出した沈殿をろ過した。水２５０ｍｌで２回洗浄し、白色の固体３４．２ｇを得た。 Synthesis example 1
(Synthesis of 1-bromo-4-t-butyl-2,6-dimethylbenzene)

Under an inert atmosphere, 225 g of acetic acid was placed in a 500 ml three-necked flask, and 24.3 g of 5-t-butyl-m-xylene was added. Then, after adding 31.2 g of bromine, it was made to react at 15-20 degreeC for 3 hours.
The reaction solution was added to 500 ml of water, and the deposited precipitate was filtered. This was washed twice with 250 ml of water to obtain 34.2 g of a white solid.

不活性雰囲気下で、１００ｍｌの３つ口フラスコに脱気した脱水トルエン３６ｍｌを入れ、トリ（ｔ−ブチル）ホスフィン０．６３ｇを加えた。続いてトリス（ジベンジリデンアセトン）ジパラジウム ０．４１ｇ、１−ブロモ−４−ｔ−ブチル−２，６−ジメチルベンゼン９．６ｇ、ｔ−ブトキシナトリウム５．２ｇ、Ｎ，Ｎ’−ジフェニル−１，４−フェニレンジアミン４．７ｇを加えた後、１００℃で３時間反応させた。
反応液を飽和食塩水３００ｍｌに加え、約５０℃に温めたクロロホルム３００ｍｌで抽出した。溶媒を留去した後、トルエン１００ｍｌを加えて、固体が溶解するまで加熱、放冷した後、沈殿をろ過し、白色の固体９．９ｇを得た。 <Synthesis of N, N′-diphenyl-N, N′-bis (4-t-butyl-2,6-dimethylphenyl) -1,4-phenylenediamine>

Under an inert atmosphere, 36 ml of degassed dehydrated toluene was placed in a 100 ml three-necked flask, and 0.63 g of tri (t-butyl) phosphine was added. Subsequently, 0.41 g of tris (dibenzylideneacetone) dipalladium, 9.6 g of 1-bromo-4-t-butyl-2,6-dimethylbenzene, 5.2 g of sodium t-butoxy, N, N′-diphenyl-1 Then, 4.7 g of 4-phenylenediamine was added, followed by reaction at 100 ° C. for 3 hours.
The reaction solution was added to 300 ml of saturated brine and extracted with 300 ml of chloroform warmed to about 50 ° C. After the solvent was distilled off, 100 ml of toluene was added, and the mixture was heated and allowed to cool until the solid was dissolved, and then the precipitate was filtered to obtain 9.9 g of a white solid.

不活性雰囲気下で、１０００ｍｌの３つ口フラスコに脱水Ｎ，Ｎ−ジメチルホルムアミド３５０ｍｌを入れ、，Ｎ’−ジフェニル−Ｎ，Ｎ’−ビス（４−ｔ−ブチル−２，６−ジメチルフェニル）−１，４−フェニレンジアミン５．２ｇを溶解した後、氷浴下でＮ−ブロモスクシンイミド３．５ｇ／Ｎ，Ｎ−ジメチルホルムアミド溶液を滴下し、一昼夜反応させた。
反応液に水１５０ｍｌを加え、析出した沈殿をろ過し、メタノール５０ｍｌで２回洗浄し白色の固体４．４ｇを得た。
¹Ｈ−ＮＭＲ（３００ＭＨｚ／ＴＨＦ−ｄ８）：
δ(ｐｐｍ) ＝ １．３〔ｓ，１８Ｈ〕、２．０〔ｓ，１２Ｈ〕、６．６〜６．７〔ｄ，４Ｈ〕、６．８〜６．９〔ｂｒ，４Ｈ〕、７．１〔ｓ，４Ｈ〕、７．２〜７．３〔ｄ，４Ｈ〕
ＭＳ（ＦＤ⁺）Ｍ⁺ ７３８ <Synthesis of N, N'-bis (4-bromophenyl) -N, N'-bis (4-t-butyl-2,6-dimethylphenyl) -1,4-phenylenediamine>

Under an inert atmosphere, 350 ml of dehydrated N, N-dimethylformamide was placed in a 1000 ml three-necked flask, and N′-diphenyl-N, N′-bis (4-t-butyl-2,6-dimethylphenyl) was added. After dissolving 5.2 g of -1,4-phenylenediamine, 3.5 g of N-bromosuccinimide / N, N-dimethylformamide solution was added dropwise in an ice bath and allowed to react all day and night.
150 ml of water was added to the reaction solution, and the deposited precipitate was filtered and washed twice with 50 ml of methanol to obtain 4.4 g of a white solid.
¹ H-NMR (300 MHz / THF-d8):
δ (ppm) = 1.3 [s, 18H], 2.0 [s, 12H], 6.6 to 6.7 [d, 4H], 6.8 to 6.9 [br, 4H], 7 .1 [s, 4H], 7.2 to 7.3 [d, 4H]
MS (FD ⁺ ) M ⁺ 738

不活性雰囲気下で、３００ｍｌの３つ口フラスコに脱気した脱水トルエン１６６０ｍｌを入れ、Ｎ，Ｎ’−ジフェニルベンジジン２７５．０ｇ、４−ｔ−ブチル−２，６−ジメチルブロモベンゼン４４９．０ｇを加えた。続いてトリス（ジベンジリデンアセトン）ジパラジウム ７．４８ｇ、ｔ−ブトキシナトリウム１９６．４ｇ、を加えた後、トリ（ｔ−ブチル）ホスフィン５．０ｇを加えた。その後、１０５℃で７時間反応させた。

反応液にトルエン２０００ｍｌを加え、セライト濾過し、濾液を水１０００ｍｌで３回洗浄した後、７００ｍｌまで濃縮した。これにトルエン／メタノール（１：１）溶液１６００ｍｌを加え、析出した結晶を濾過し、メタノールで洗浄した。白色の固体４７９．４ｇを得た。


＜Ｎ，Ｎ’−ビス（４−ブロモフェニル）−Ｎ，Ｎ’−ビス（４−ｔ‐ブチル−２，６−ジメチルフェニル）−ベンジジンの合成＞

不活性雰囲気下で、クロロホルム４７３０ｇに、上記Ｎ，Ｎ’−ジフェニル−Ｎ，Ｎ’−ビス（４−ｔ−ブチル−２，６−ジメチルフェニル）−ベンジジン４７２．８ｇを溶解した後、遮光および氷浴下でＮ−ブロモスクシンイミド２８１．８ｇを１２分割で１時間かけて仕込み、３時間反応させた。
クロロホルム１４３９ｍｌを反応液に加え、濾過し、濾液のクロロホルム溶液を５％チオ硫酸ナトリウム２１５９ｍｌで洗浄し、トルエンを溶媒留去して白色結晶を得た。得られた白色結晶をトルエン／エタノールで再結晶し、白色結晶６７８．７ｇを得た。
ＭＳ（ＡＰＣＩ（＋））：（Ｍ＋Ｈ）⁺ ８１５．２

Synthesis example 2
<Synthesis of N, N'-diphenyl-N, N'-bis (4-tert-butyl-2,6-dimethylphenyl) -benzidine>

In an inert atmosphere, 1660 ml of degassed dehydrated toluene was placed in a 300 ml three-necked flask, and 275.0 g of N, N′-diphenylbenzidine and 449.0 g of 4-t-butyl-2,6-dimethylbromobenzene were added. added. Subsequently, after adding 7.48 g of tris (dibenzylideneacetone) dipalladium and 196.4 g of t-butoxy sodium, 5.0 g of tri (t-butyl) phosphine was added. Then, it was made to react at 105 degreeC for 7 hours.

Toluene (2000 ml) was added to the reaction mixture, and the mixture was filtered through Celite. The filtrate was washed with 1000 ml of water three times and concentrated to 700 ml. To this was added 1600 ml of a toluene / methanol (1: 1) solution, and the precipitated crystals were filtered and washed with methanol. 479.4 g of a white solid was obtained.


<Synthesis of N, N'-bis (4-bromophenyl) -N, N'-bis (4-tert-butyl-2,6-dimethylphenyl) -benzidine>

In an inert atmosphere, 472.8 g of the N, N′-diphenyl-N, N′-bis (4-t-butyl-2,6-dimethylphenyl) -benzidine was dissolved in 4730 g of chloroform, In an ice bath, 281.8 g of N-bromosuccinimide was charged in 12 portions over 1 hour and reacted for 3 hours.
Chloroform 1439 ml was added to the reaction solution, followed by filtration. The chloroform solution of the filtrate was washed with 2159 ml of 5% sodium thiosulfate, and toluene was distilled off to obtain white crystals. The obtained white crystals were recrystallized with toluene / ethanol to obtain 678.7 g of white crystals.
MS (APCI (+)): (M + H) ^<+ > 815.2

（化合物Ａ）

三口の丸底フラスコ（５００ｍｌ）に２−ブロモヨードベンゼン２５．１ｇ、ナフタレンボロン酸２０．０ｇ、テトラキストリフェニルホスフィンパラジウム（０）０．４２７ｇおよび炭酸カリウム２５．５ｇを加えた後、トルエン９２ｍｌ、水９１ｍｌを加え加熱還流した。２４時間攪拌した後、室温まで冷却した。反応溶液をシリカゲルを通してろ過し、溶媒を留去し組成生物２５ｇを得た。シリカゲルカラムクロマトグラフィーにて精製した後、ヘキサンを用いて再結晶を行い、化合物Ａを白色固体として１２．２ｇ得た。

（化合物Ｂの合成）

（化合物Ｂ）

３００ｍｌの３口フラスコを窒素置換し、化合物Ａ ５．００ｇ（１７．７ｍｍｏｌ）を加え、１００ｍｌのＴＨＦに溶解させた。−７８℃に冷却後、１２．６ｍｌのｎ−ブチルリチウム（１．５４Ｍヘキサン溶液、１９．４ｍｍｏｌ）を滴下した。３０分保温後、４．７５ｇ（２１．２ｍｍｏｌ）のシクロペンタデカノンを２５ｍｌのＴＨＦに溶解させた溶液を滴下した。５分間保温後、冷浴を外し、室温まで昇温させ、８時間保温した。水１ｍｌ、トルエン１００ｍｌを加え、シリカゲルを敷いたグラスフィルターを通し、ろ過した。溶媒を留去し、８．９９ｇの粗生成物を得た。シリカゲルカラムクロマトグラフィーにて精製（展開溶媒 ヘキサン：酢酸エチル＝４０：１）し、５.１８ｇの化合物Ｂを得た。

（化合物Ｃの合成）

（化合物Ｃ）

窒素雰囲気下２００ｍｌの２口フラスコに三フッ化ホウ素エーテル錯体を仕込み、ジクロロメタン２５ｍｌを加えて攪拌した。水浴中で冷却しながら、化合物Ｂ ５ｇをジクロロメタン５０ｍｌに溶かした溶液を加えた。１時間攪拌した後、水１００ｍｌを加えて反応を停止し、クロロホルム５０ｍｌで二回抽出を行った。得られた有機層はプレコートしたシリカゲルを通してろ過し、化合物Ｃ ４．１ｇを得た。この混合物は、これ以上精製することなく次の反応に用いた。
¹Ｈ−ＮＭＲ（３００ＭＨｚ／ＣＤＣｌ₃）
δ１．３０−１．５２（ｍ，２４Ｈ），１．８５（ｑ，４Ｈ），７．３３（ｔ，１Ｈ），７．４３（ｄ，１Ｈ），７．５０（ｔ，１Ｈ），７．５８〜７．６５（ｍ，２Ｈ），７．６８（ｄ，１Ｈ），７．８２（ｄ，１Ｈ），７．９４（ｄ，１Ｈ），８．３６（ｄ，１Ｈ），８．７６（ｄ，１Ｈ）
Example 1 <Synthesis of Compound C>
(Synthesis of Compound A)

(Compound A)

After adding 25.1 g of 2-bromoiodobenzene, 20.0 g of naphthalene boronic acid, 0.427 g of tetrakistriphenylphosphine palladium (0) and 25.5 g of potassium carbonate to a three-necked round bottom flask (500 ml), 92 ml of toluene, 91 ml of water was added and heated to reflux. After stirring for 24 hours, it was cooled to room temperature. The reaction solution was filtered through silica gel, and the solvent was distilled off to obtain 25 g of a composition product. After purification by silica gel column chromatography, recrystallization was performed using hexane to obtain 12.2 g of Compound A as a white solid.

(Synthesis of Compound B)

(Compound B)

A 300 ml three-necked flask was purged with nitrogen, and 5.00 g (17.7 mmol) of compound A was added and dissolved in 100 ml of THF. After cooling to −78 ° C., 12.6 ml of n-butyllithium (1.54 M hexane solution, 19.4 mmol) was added dropwise. After incubating for 30 minutes, a solution prepared by dissolving 4.75 g (21.2 mmol) of cyclopentadecanone in 25 ml of THF was added dropwise. After keeping the temperature for 5 minutes, the cold bath was removed, the temperature was raised to room temperature, and the temperature was kept for 8 hours. 1 ml of water and 100 ml of toluene were added, and the mixture was filtered through a glass filter covered with silica gel. The solvent was distilled off to obtain 8.99 g of a crude product. Purification by silica gel column chromatography (developing solvent hexane: ethyl acetate = 40: 1) gave 5.18 g of compound B.

(Synthesis of Compound C)

(Compound C)

Boron trifluoride ether complex was charged into a 200 ml two-necked flask under a nitrogen atmosphere, and 25 ml of dichloromethane was added and stirred. While cooling in a water bath, a solution of 5 g of Compound B in 50 ml of dichloromethane was added. After stirring for 1 hour, 100 ml of water was added to stop the reaction, and extraction was performed twice with 50 ml of chloroform. The obtained organic layer was filtered through precoated silica gel to obtain 4.1 g of Compound C. This mixture was used in the next reaction without further purification.
¹ H-NMR (300 MHz / CDCl ₃ )
δ 1.30-1.52 (m, 24H), 1.85 (q, 4H), 7.33 (t, 1H), 7.43 (d, 1H), 7.50 (t, 1H), 7 58 to 7.65 (m, 2H), 7.68 (d, 1H), 7.82 (d, 1H), 7.94 (d, 1H), 8.36 (d, 1H), 8. 76 (d, 1H)

（化合物Ｄ）

窒素雰囲気下、３００ｍｌ3口フラスコに化合物Ｃ ４．６ｇを仕込み、ジクロロメタン５０ｍｌを加えて溶解し、酢酸を７０ｍｌ加えて油浴中５０℃に加熱した。加熱しながら塩化亜鉛３．３５ｇを加えて攪拌し、ベンジルトリメチルアンモニウムトリブロミド９．６１ｇをジクロロメタン２１ｍｌに溶かした溶液を加熱還流しながら３０分かけて加えた。さらに１時間５０℃で攪拌し、室温まで冷却した後、水１００ｍｌを加えて反応を停止した。分液し、水層はクロロホルム５０ｍｌで抽出し、有機層を合一した。有機層は飽和チオ硫酸ナトリウム水溶液１００ｍｌで洗浄後、飽和炭酸水素ナトリウム水溶液１５０ｍｌ、水１００ｍｌで洗浄した。得られた有機層はプレコートしたシリカゲルを通してろ過し、粗生成物６．８ｇを得た。この混合物をシリカゲルカラムクロマトグラフィーにより精製し、化合物Ｄを１．９８ｇ得た。
¹Ｈ−ＮＭＲ（３００ＭＨｚ／ＣＤＣｌ₃）：
δ１．２６−１．６（ｍ，２４Ｈ），１．７６（ｑ，４Ｈ），７．５５（ｄｄ，１Ｈ），７．５８０７．７１（ｍ，２Ｈ），７．６８（Ｓ，１ｈ），７．９６（Ｓ，１ｈ），８．１７（ｄ，１Ｈ），８．３８（ｄｄ，１Ｈ），８．６７（ｄ，１Ｈ） Example 2 <Synthesis of Compound D>

(Compound D)

Under a nitrogen atmosphere, 4.6 g of Compound C was charged into a 300 ml three-necked flask, dissolved by adding 50 ml of dichloromethane, and 70 ml of acetic acid was added and heated to 50 ° C. in an oil bath. While heating, 3.35 g of zinc chloride was added and stirred, and a solution of 9.61 g of benzyltrimethylammonium tribromide dissolved in 21 ml of dichloromethane was added over 30 minutes while heating to reflux. The mixture was further stirred at 50 ° C. for 1 hour and cooled to room temperature, and then 100 ml of water was added to stop the reaction. The aqueous layer was extracted with 50 ml of chloroform, and the organic layers were combined. The organic layer was washed with 100 ml of saturated aqueous sodium thiosulfate solution, and then washed with 150 ml of saturated aqueous sodium hydrogen carbonate solution and 100 ml of water. The obtained organic layer was filtered through precoated silica gel to obtain 6.8 g of a crude product. This mixture was purified by silica gel column chromatography to obtain 1.98 g of Compound D.
¹ H-NMR (300 MHz / CDCl ₃ ):
δ 1.26-1.6 (m, 24H), 1.76 (q, 4H), 7.55 (dd, 1H), 7.5807.71 (m, 2H), 7.68 (S, 1h) 7.96 (S, 1h), 8.17 (d, 1H), 8.38 (dd, 1H), 8.67 (d, 1H)

Example 3 <Synthesis of Polymer Compound 1>
Compound D (0.568 g) and 2,2′-bipyridyl (0.422 g) were dissolved in 72 mL of dehydrated tetrahydrofuran, and then this solution was added to bis (1,5-cyclooctadiene) nickel (0 ) {Ni (COD) ₂ } (0.743 g) was added and stirred, and the mixture was heated to 60 ° C. and reacted for 3 hours. The reaction solution was cooled to room temperature, dropped into a mixed solution of 25% aqueous ammonia 4 mL / methanol 72 mL / ion exchanged water 72 mL, stirred for 1 hour, the deposited precipitate was filtered, dried under reduced pressure, and dissolved in 60 mL of toluene. I let you. After dissolution, 4.6 g of radiolite was added, and the mixture was stirred for 2 hours 30 minutes, and insoluble matter was filtered. The obtained filtrate was purified through an alumina column. Next, 110 mL of 5.2% aqueous hydrochloric acid was added and stirred for 3 hours, and then the aqueous layer was removed. Subsequently, 110 mL of 4% ammonia water was added and stirred for 2 hours, and then the aqueous layer was removed. Further, about 110 mL of ion-exchanged water was added to the organic layer and stirred for 1 hour, and then the aqueous layer was removed. Thereafter, the organic layer was concentrated under reduced pressure to 30 ml, poured into 90 ml of methanol and stirred for 0.5 hour, and the deposited precipitate was filtered and dried under reduced pressure. The yield of the obtained polymer (hereinafter referred to as polymer compound 1) was 0.12 g. The number average molecular weight and weight average molecular weight in terms of polystyrene were Mn = 3.1 × 10 ⁴ and Mw = 4.0 × 10 ⁵ , respectively.

Example 4 <Synthesis of Polymer Compound 2>
Compound D (0.398 g) and 2,2′-bipyridyl (0.295 g) were dissolved in 63 mL of dehydrated toluene, and then bis (1,5-cyclooctadiene) nickel (0 ) {Ni (COD) ₂ } (0.520 g) was added and stirred. The reaction solution was cooled to room temperature, diluted with 120 ml of toluene, 50 g of 4% aqueous ammonia was added, and the mixture was stirred for 0.5 hour, and then the aqueous layer was removed. Next, after adding 50 g of 5.2% aqueous hydrochloric acid and stirring for 1 hour, the aqueous layer was removed. Subsequently, 104 mL of 4% aqueous ammonia was added and stirred for 2 hours, and then the aqueous layer was removed. Further, about 104 mL of ion exchange water was added to the organic layer and stirred for 1 hour, and then the aqueous layer was removed. The organic layer was passed through an alumina column for purification. Thereafter, the organic layer was concentrated under reduced pressure to about 60 ml, poured into 180 ml of methanol and stirred for 0.5 hour, and the deposited precipitate was filtered and dried under reduced pressure. The yield of the obtained polymer (hereinafter referred to as polymer compound 2) was 0.21 g. The number average molecular weight and weight average molecular weight in terms of polystyrene were Mn = 7.5 × 10 ⁴ and Mw = 6.7 × 10 ⁵ , respectively.

Example 5 <Synthesis of Polymer Compound 3>
Compound D (0.398 g), N, N′-bis (4-bromophenyl) -N, N′-bis (4-tert-butyl-2,6-dimethylphenyl) -benzidine (0.244 g), 2 , 2′-bipyridyl (0.422 g) was dissolved in 72 mL of dehydrated tetrahydrofuran, and this solution was added to bis (1,5-cyclooctadiene) nickel (0) {Ni (COD) ₂ } ( 0.743 g) was added and stirred, and the temperature was raised to 60 ° C. and reacted for 3 hours. The reaction solution was cooled to room temperature, dropped into a mixed solution of 25% aqueous ammonia 4 mL / methanol 72 mL / ion exchanged water 72 mL, stirred for 1 hour, the deposited precipitate was filtered, dried under reduced pressure, and dissolved in 40 mL of toluene. I let you. After dissolution, 2.0 g of radiolite was added and stirred for 30 minutes, and the insoluble material was filtered off. The obtained filtrate was purified through an alumina column. Next, 95 mL of 5.2% aqueous hydrochloric acid was added and stirred for 3 hours, and then the aqueous layer was removed. Subsequently, 95 mL of 4% aqueous ammonia was added, and after stirring for 2 hours, the aqueous layer was removed. Further, about 95 mL of ion exchange water was added to the organic layer and stirred for 1 hour, and then the aqueous layer was removed. Thereafter, the organic layer was poured into 285 ml of methanol and stirred for 0.5 hour, and the deposited precipitate was filtered and dried under reduced pressure. The yield of the obtained polymer (hereinafter referred to as polymer compound 3) was 0.34 g. The number average molecular weight and weight average molecular weight in terms of polystyrene were Mn = 2.1 × 10 ⁴ and Mw = 3.0 × 10 ⁵ , respectively. It was 345 degreeC when the glass transition temperature of the high molecular compound 3 was measured.

Example 6 <Synthesis of Polymer Compound 4>
Compound D (0.409 g), N, N′-bis (4-bromophenyl) -N, N′-bis (4-tert-butyl-2,6-dimethylphenyl) -1,4-phenylenediamine ( 0.059 g), 2,2′-bipyridyl (0.337 g) was dissolved in 72 mL of dehydrated tetrahydrofuran, and this solution was added to bis (1,5-cyclooctadiene) nickel (0) {Ni under a nitrogen atmosphere. (COD) ₂ } (0.594 g) was added and stirred, and the mixture was heated to 60 ° C. and reacted for 3 hours. The reaction solution was cooled to room temperature, dropped into a mixed solution of 25% aqueous ammonia 3 mL / methanol 72 mL / ion-exchanged water 72 mL, stirred for 1 hour, the deposited precipitate was filtered, dried under reduced pressure, and dissolved in 44 mL of toluene. I let you. After dissolution, 2.3 g of radiolite was added and stirred for 30 minutes, and the insoluble material was filtered off. The obtained filtrate was purified through an alumina column. Next, 104 mL of 5.2% aqueous hydrochloric acid was added and stirred for 3 hours, and then the aqueous layer was removed. Subsequently, 104 mL of 4% aqueous ammonia was added and stirred for 2 hours, and then the aqueous layer was removed. Further, about 104 mL of ion exchange water was added to the organic layer and stirred for 1 hour, and then the aqueous layer was removed. Thereafter, the organic layer was poured into 312 ml of methanol and stirred for 0.5 hour, and the deposited precipitate was filtered and dried under reduced pressure. The yield of the obtained polymer (hereinafter referred to as polymer compound 4) was 0.17 g. The number average molecular weight and weight average molecular weight in terms of polystyrene were Mn = 2.6 × 10 ⁴ and Mw = 2.6 × 10 ⁵ , respectively.

Example 7
(Preparation of solution 1)
The polymer compound 2 was dissolved in toluene to a concentration of 0.8 wt% to prepare a solution 1. The polymer compound 2 was dissolved in toluene at room temperature.

Example 8
(Preparation of solution 2)
The polymer compound 4 was dissolved in toluene to a concentration of 0.8 wt% to prepare a solution 2. The polymer compound 4 was dissolved in toluene at room temperature.

Example 9
(Measurement of fluorescence spectrum)
Solution 2 was spin coated on quartz to produce a polymer thin film. When the fluorescence spectrum was measured by the above method, a fluorescence spectrum having a peak at 474 nm was obtained.

Example 10
(Preparation of Solution 3)
Polymer compound 1 and polymer compound 3 were mixed at a weight ratio of 75:25 and dissolved in toluene to a concentration of 1.4 wt% to prepare solution 3.

Example 11
(Production of EL element)
A suspension of poly (3,4) ethylenedioxythiophene / polystyrene sulfonic acid (manufactured by Bayer, BaytronP AI4083) is filtered through a 0.2 μm membrane filter on a glass substrate with an ITO film having a thickness of 150 nm formed by sputtering. Using the solution, a thin film having a thickness of 70 nm was formed by spin coating, and dried on a hot plate at 200 ° C. for 10 minutes. Next, the solution 3 obtained above was used to form a film at a rotational speed of 3400 rpm by spin coating. The film thickness after film formation was about 75 nm. Further, this was dried at 80 ° C. under reduced pressure for 1 hour, and then lithium fluoride was deposited by about 4 nm, calcium was deposited by about 5 nm as a cathode, and then aluminum was deposited by about 80 nm to produce an EL device. The metal deposition was started after the degree of vacuum reached 1 × 10 ⁻⁴ Pa or less. By applying voltage to the resulting device, EL light emission having a peak at 470 nm was obtained from this device. The intensity of EL emission was almost proportional to the current density. The device started to emit light at 3.0 V, and the maximum light emission efficiency was 4.67 cd / m ² .

Reference example 1
(Calculation of thickness perpendicular to the skeleton plane of the compound)
By the molecular orbital calculation, the average value of the thickness in the direction perpendicular to the skeleton plane of the compounds (1-A-1) to (1-A-4) was calculated. The results are shown in Table 1 below. In order for the C ring to suppress the interaction between the polymer chains, it is preferable that the C ring is wide in the direction perpendicular to the skeleton plane. By suppressing the interaction, fluorescence intensity and solubility can be increased. There is a significant difference in thickness in the vertical direction between the 6-membered ring (1-A-1) and the 7-membered ring (1-A-2), and it is expected that the fluorescence intensity and solubility will be increased. .

Claims (45)

The high molecular compound characterized by including the structure shown by following formula (1).

(1)

[Wherein, A ring and B ring each independently represent an aromatic hydrocarbon ring which may have a substituent, and C ring represents an unsubstituted alicyclic hydrocarbon ring having 7 or more carbon atoms. And the alicyclic hydrocarbon ring may contain a heteroatom. ] The polymer compound according to claim 1, comprising a structure represented by the following formula (2).

(2)
[Wherein, A ring, B ring and C ring have the same meaning as described above, and two bonds are present on A ring or B ring, respectively. ] The polymer compound according to claim 1, comprising a structure represented by the formula (2) as a repeating unit. The polymer compound according to any one of claims 1 to 3, comprising a structure represented by the following formula (3).

(3)
[Wherein, A ring, B ring and C ring have the same meaning as described above, and a bond is present on A ring or B ring. ] The polymer compound according to claim 1, comprising a repeating unit represented by the following formula (4).

(4)
[Wherein, A ring, B ring and C ring have the same meaning as described above, and three bonds exist on A ring or B ring, respectively. ] 6. The polymer compound according to claim 1, wherein at least one of the A ring and the B ring is an aromatic hydrocarbon ring in which two or more benzene rings are condensed. 7. The polymer compound according to claim 6, wherein the A ring is a benzene ring and the B ring is a naphthalene ring. The polymer compound according to any one of claims 2 to 7, wherein the structure represented by (2) is a structure represented by the following formula (2-1) or (2-2).

[Wherein, R _p1 , R _q1 , R _p2 and R _q2 each represents a substituent. a represents an integer of 0 to 3, and b represents an integer of 0 to 5. When a plurality of R _p1 , R _q1 , R _p2 and R _q2 are present, they may be the same or different. ] The polymer compound according to claim 1, wherein the C ring is an alicyclic hydrocarbon having 8 to 20 carbon atoms. The polymer compound according to claim 1, comprising a repeating unit represented by the formula (2-1). Furthermore, the high molecular compound in any one of Claims 1-10 containing the repeating unit shown by following formula (5), Formula (6), Formula (7), or Formula (8).
-Ar _1- (5)
_{- (- Ar 2 -X 1 -} ) ff -Ar 3 - (6)
—Ar ₄ —X ₂ — (7)
-X _3- (8)

[Wherein, Ar ₁ , Ar ₂ , Ar ₃ and Ar ₄ each independently represent an arylene group, a divalent heterocyclic group or a divalent group having a metal complex structure. X ₁ , X ₂ and X ₃ each independently represent —CR ₉ ═CR ₁₀ —, —C≡C—, —N (R ₁₁ ) —, or — (SiR ₁₂ R ₁₃ ) _m —. R ₉ and R ₁₀ each independently represents a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, a carboxyl group, a substituted carboxyl group or a cyano group. R ₁₁ , R ₁₂ and R ₁₃ each independently represent a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, an arylalkyl group or a substituted amino group. ff represents 1 or 2. m represents an integer of 1 to 12. When there are a plurality of R ₉ , R ₁₀ , R ₁₁ , R ₁₂ and R ₁₃ , they may be the same or different. ] The polymer compound according to claim 11, wherein the repeating unit represented by the formula (5) is a repeating unit represented by the following formula (9) or (10).

(9)
[Wherein, A ring and B ring have the same meaning as described above, two bonds exist on A ring and / or B ring, respectively, and Rw ₁ and Rx ₁ each independently represent a substituent. ]

(10)
[Wherein, A ring and B ring have the same meaning as described above, and two bonds are present on A ring and / or B ring, respectively, and Z is —O—, —S—, —S (═O ) -, - S (= O ) (= O) -, - N (Rw 2) -, - Si (Rw 2) (Rx 2) -, - P (= O) (Rw 2) -, - P ( _{rw 2) -, - B (} rw 2) -, - C (rw 2) (Rx 2) -O -, - C (rw 2) = represents the N- or -Se-. Rw ₂ and Rx ₂ each independently represent a substituent. ] The repeating unit represented by the formula (5) is a repeating unit represented by the following formula (11), (12), (13), (14), (15), (16) or (17). The polymer compound according to claim 11, wherein

[Wherein, R ₁₄ represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, It represents a substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group or cyano group. n represents an integer of 0 to 4. When a plurality of R ₁₄ are present, they may be the same or different. ]

Wherein R ₁₅ and R ₁₆ are each independently an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, aryl Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. o and p each independently represent an integer of 0 to 3. When a plurality of R ₁₇ and R ₁₆ are present, they may be the same or different. ]

[Wherein, R ₁₇ and R ₂₀ are each independently an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an aryl group. Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. q and r each independently represents an integer of 0 to 4. R ₁₈ and R ₁₉ each independently represent a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, a carboxyl group, a substituted carboxyl group or a cyano group. When a plurality of R ₁₇ and R ₂₀ are present, they may be the same or different. ]

[Wherein, R ₂₁ represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, It represents a substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group or cyano group. s represents the integer of 0-2. Ar ₁₃ and Ar ₁₄ each independently represent an arylene group, a divalent heterocyclic group or a divalent group having a metal complex structure. ss and tt each independently represent 0 or 1. X ₄ represents O, S, SO, SO ₂ , Se or Te. When a plurality of R ₂₁ are present, they may be the same or different. ]

[Wherein R ₂₂ and R ₂₃ are each independently an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, aryl Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. t and u each independently represents an integer of 0 to 4. X ₅ represents O, S, SO ₂ , Se, Te, N—R ₂₄ , or SiR ₂₅ R ₂₆ . X ₆ and X ₇ each independently represent N or C—R ₂₇ . R ₂₄ , R ₂₅ , R ₂₆ and R ₂₇ each independently represent a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group or a monovalent heterocyclic group. When there are a plurality of R ₂₂ , R ₂₃ and R ₂₇ , they may be the same or different. ]

Wherein R ₂₈ and R ₃₃ are each independently an alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, arylalkyl group, arylalkoxy group, arylalkylthio group, arylalkenyl group, aryl Alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group Or represents a cyano group. v and w each independently represent an integer of 0 to 4. R ₂₉ , R ₃₀ , R ₃₁ and R ₃₂ each independently represents a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group, a carboxyl group, a substituted carboxyl group or a cyano group. Ar ₅ represents an arylene group, a divalent heterocyclic group or a divalent group having a metal complex structure. When a plurality of R ₂₈ and R ₃₃ are present, they may be the same or different. ]

[Wherein, R ₃₄ represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, an amino group, It represents a substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue, amide group, acid imide group, monovalent heterocyclic group, carboxyl group, substituted carboxyl group or cyano group. uu represents an integer of 0 to 4. When a plurality of R ₃₄ are present, they may be the same or different. ] The polymer compound according to claim 11, wherein the repeating unit represented by the formula (6) is a repeating unit represented by the following formula (18).

[Wherein, Ar ₆ , Ar ₇ , Ar ₈ and Ar ₉ each independently represent an arylene group or a divalent heterocyclic group. Ar ₁₀ , Ar ₁₁ and Ar ₁₂ each independently represent an aryl group or a monovalent heterocyclic group. Ar ₆ , Ar ₇ , Ar ₈ , Ar ₉ , and Ar ₁₀ may have a substituent. x and y each independently represents 0 or a positive integer. ] The polymer compound according to any one of claims 1 to 14, comprising one or more repeating units represented by the following formulas (19-1), (19-2) or (19-3).

[In the formula, A ring and B ring each independently represent an aromatic hydrocarbon ring which may have a substituent, and an aromatic hydrocarbon ring in A ring and an aromatic hydrocarbon ring in B ring; Are aromatic hydrocarbon rings having different ring structures. Ring C represents the same meaning as described above. ] It is a copolymer containing 50 mol% or more of the repeating units represented by the formula (2), and the repeating unit represented by the formula (2) is adjacent to the repeating unit represented by the formula (2). The polymer compound according to claim 15, wherein when the ratio is Q ₁₁ , Q ₁₁ is 25% or more. A copolymer containing 15 to 50 mol% of the repeating unit represented by the formula (18), wherein the repeating unit represented by the formula (18) is adjacent to the repeating unit represented by the formula (18). The polymer compound according to claim 14, wherein Q ₂₂ is 15 to 50% or more when a certain ratio is Q ₂₂ .   One or more of the molecular chain terminals of the polymer compound are a monovalent heterocyclic group, a monovalent aromatic amine group, a monovalent group derived from a heterocyclic coordination metal complex, and an aryl group having a formula weight of 90 or more. The polymer compound according to claim 1, which has a terminal group selected from the group consisting of:   The polymer compound according to claim 1, which has a glass transition temperature of 130 ° C. or higher.   The polymer compound according to claim 1, wherein the fluorescence quantum yield is 50% or more. The polymer compound according to any one of claims 1 to 20, wherein the number average molecular weight in terms of polystyrene is 10 ³ to 10 ⁸ . The polymer compound according to any one of claims 1 to 21, wherein a polystyrene-reduced weight average molecular weight is 5 x 10 ⁴ or more. The compound shown by following formula (20).

[Wherein, R _t represents a substituent and is bonded to the A ring and / or the B ring. at represents an integer of 0 or more. A ring, B ring and C ring represent the same meaning as described above. ] A compound represented by the following formula (21).

Wherein, Y _t and Y _u represents a substituent that participates in independently polymerization, is bound to ring A and / or B ring, respectively. A ring, B ring and C ring represent the same meaning as described above. ] The compound according to claim 24, wherein the formula (21) is the following formula (21-1) or (21-2).

[Wherein, R _r1 , R _s1 , R _r2 and R _s2 represent substituents, a represents an integer of 0 to 3, b represents an integer of 0 to 5, R _r1 , R _s1 , R _r2 and When a plurality of R _s2 are present, they may be the same or different. Y _t1, Y _u1, Y _t2 and Y _u2 represent a substituent capable of participating independently to the polymerization. Ring C represents the same meaning as described above. ] The method for producing a polymer compound according to any one of claims 1 to 22, wherein the polymerization is carried out using the compound according to any one of claims 23 to 25 as one of raw materials.   27. The production according to claim 26, wherein the substituent involved in the polymerization is independently selected from a halogen atom, an alkyl sulfonate group, an aryl sulfonate group and an aryl alkyl sulfonate group, and is polymerized in the presence of a nickel zero-valent complex. Method. Substituents involved in the polymerization are each independently selected from halogen atoms, alkyl sulfonate groups, aryl sulfonate groups, aryl alkyl sulfonate groups, -B (OH) ₂ , or borate ester groups, and halogen atoms possessed by all raw material compounds, The ratio of the total number of moles of alkyl sulfonate group aryl sulfonate group and aryl alkyl sulfonate group to the total number of moles of —B (OH) ₂ and borate group is substantially 1, using a nickel or palladium catalyst The production method according to claim 26, wherein polymerization is performed.   A polymer composition comprising at least one material selected from a hole transport material, an electron transport material, and a light emitting material and the polymer compound according to any one of claims 1 to 22. A polymer composition comprising two or more polymer compounds according to any one of claims 1 to 22.   A solution comprising the polymer compound according to any one of claims 1 to 22 or the polymer composition according to claim 29 or 30.   The solution according to claim 31, wherein the viscosity is 5 to 20 mPa · s at 25 ° C.   A luminescent thin film containing the polymer compound according to any one of claims 1 to 22 or the polymer composition according to claim 29 or 30.   A conductive thin film containing the polymer compound according to any one of claims 1 to 22 or the polymer composition according to claim 29 or 30.   An organic semiconductor thin film containing the polymer compound according to any one of claims 1 to 22 or the polymer composition according to claim 29 or 30.   An organic transistor comprising the organic semiconductor thin film according to claim 35.   It has an organic layer between electrodes consisting of an anode and a cathode, and the organic layer contains the polymer compound according to any one of claims 1 to 22 or the polymer composition according to claim 29 or 30. A polymer light emitting device characterized.   38. The polymer light emitting device according to claim 37, wherein the organic layer is a light emitting layer.   39. The polymer light emitting device according to claim 38, wherein the light emitting layer further contains a hole transport material, an electron transport material or a light emitting material.   A polymer compound according to any one of claims 1 to 22 or a polymer composition according to claim 29 or 30, wherein a light emitting layer and a charge transport layer are provided between electrodes comprising an anode and a cathode. 38. The polymer light-emitting device according to claim 37, comprising a product.   A light emitting layer and a charge transport layer are provided between an electrode composed of an anode and a cathode, a charge injection layer is provided between the charge transport layer and the electrode, and the charge injection layer is any one of claims 1 to 22. The polymer light-emitting device according to claim 40, comprising the polymer compound according to claim 29 or the polymer composition according to claim 29 or 30. A planar light source comprising the polymer light emitting device according to any one of claims 37 to 41.   A segment display device comprising the polymer light emitting device according to any one of claims 37 to 41.   A dot matrix display using the polymer light emitting device according to any one of claims 37 to 41. 42. A liquid crystal display device comprising the polymer light-emitting device according to claim 37 as a backlight.