JP2005317297A - Organic electroluminescent element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic electroluminescent element with improved brightness. <P>SOLUTION: Brightness can be improved by turning a pyridine derivative, for example, expressed by formula b-3, into a light emitting element. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an organic electroluminescence element.

In recent years, with the expansion of demand for flat displays and the like, various display elements have been actively developed and put to practical use. Among them, an electroluminescence element (hereinafter referred to as an EL element hereinafter) having particularly high resolution, high luminance, and high visibility. Is abbreviated).
An EL element uses a property of emitting light by applying electricity to a substance, and is classified into an inorganic EL element and an organic EL element. Inorganic EL elements are excellent in long life and stability, and have already been put into practical use as backlights for various devices. However, there are problems such as high driving voltage required for light emission of about 200 V and difficulty in full color. And its use is limited to specific demand. On the other hand, organic EL devices have shortcomings such as low life, but can be driven at a low voltage, can be adapted to a wide wavelength range, can be enlarged, and have high brightness. Has advantages. Considering that the future development of displays focuses on increasing screen size, full color, low power consumption, etc., there are high expectations for organic EL elements having various possibilities.

  On the other hand, pyridine derivatives have been developed for use in a wide range of fields, and are attracting attention as very attractive compounds. Many examples using bipyridyl derivatives have also been reported in the field of organic EL devices. For example, iridium complexes of 2,2′-bipyridyl (see Patent Document 1), platinum complexes of 2,2′-bipyridyl (see Patent Document 2) ) 2,2′-bipyridyl derivatives and multimers thereof (see Patent Document 3), dipyridylthiophene derivatives (see Patent Document 4), 5,5′-diphenyl-2,2′-bipyridyl derivatives (see Patent Document 5), Examples include 2,2′-bipyridyl copolymer (see Patent Document 5).

JP 2003-147345 A JP 2002-203678 A JP 2003-123983 A JP 2002-158093 A JP-A-7-82552 JP 2001-302793 A

  An object of the present invention is to provide an organic EL device having improved light emission luminance.

As a result of intensive studies to achieve the above object, the present inventors have found that the organic EL device can be achieved by containing the bipyridine derivative represented by the general formula (I). That is, the present invention has the following configuration.
(I) An organic electroluminescence device comprising a pyridine derivative represented by the following general formula (I).

  In the formula, R 1 and R 2 are each independently a hydrogen atom, alkyl group, alkenyl group, alkynyl group, aryl group, hydroxy group, alkoxy group, aryloxy group, carboxyl group, carbonyl group, sulfonyl group, carbamoyl group, sulfamoyl. A group, an alkylthio group, an arylthio group, a thiocarbonyl group, an amino group, a carbonylamino group, a sulfonylamino group, a cyano group, a heterocyclic residue other than pyridine, or a halogen atom. R3 represents the following structural formula (II) or (III).

In the formula, R4 and R5 are each independently a hydrogen atom, alkyl group, alkenyl group, alkynyl group, aryl group, hydroxyl group, alkoxy group, aryloxy group, carboxyl group, carbonyl group, sulfonyl group, carbamoyl group, sulfamoyl. A group, an alkylthio group, an arylthio group, a thiocarbonyl group, an amino group, a carbonylamino group, a sulfonylamino group, a cyano group, a heterocyclic residue other than pyridine, or a halogen atom.
(ii) In the general formulas (I) to (III), R1, R2, R4, and R5 are each independently any one of a hydrogen atom, an alkyl group, and an aryl group. .
(iii) An organic electroluminescence device comprising a polymer having at least one pyridine derivative as described in (ii) as its partial structure.
(iv) In the general formulas (I) to (III), at least one of R1, R2, R4, and R5 is any of an alkoxy group, an aryloxy group, an amino group, and a heterocyclic residue excluding pyridine. 1. The organic electroluminescence device according to 1.
(V) An organic electroluminescence device comprising a polymer having at least one pyridine derivative as described in (iv) as its partial structure.

  According to the present invention, it is possible to provide an organic EL element with improved emission luminance.

The present invention will be described in more detail below.
In the general formulas (I) to (III) used in the present invention, the alkyl groups represented by R1, R2, R4, and R5 are specifically methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, and nonyl. , Decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, icosyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, linear, branched or cyclic such as cyclooctyl, cyclononyl, cyclodecyl 1 to 20 alkyl groups are represented.
The alkenyl group represented by R1, R2, R4, and R5 is vinyl, allyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, A linear, branched or cyclic alkenyl group having 2 to 20 carbon atoms such as nonadecenyl, icocenyl, hexadienyl, dodecatrienyl and the like is represented.
The alkynyl group represented by R 1, R 2, R 4, R 5 is an alkynyl having 2 to 20 carbon atoms which is linear, branched or cyclic such as ethynyl, butynyl, pentynyl, hexynyl, heptynyl, octynyl, noninyl, cyclooctynyl, cyclononynyl, cyclodecynyl Represents a group.
The aryl group represented by R1, R2, R4 and R5 represents a 6- to 10-membered monocyclic or polycyclic aryl group such as phenyl, naphthyl, phenanthryl, anthryl and the like.

The alkoxy group represented by R 1, R 2, R 4, and R 5 is a C 1-20 such as methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, nonyloxy, decyloxy, dodecyloxy, octadecyloxy, etc. Represents an alkoxy group.
The aryloxy group represented by R1, R2, R4 and R5 represents phenoxy, naphthyloxy and the like.
The carbonyl groups represented by R1, R2, R4 and R5 are alkylcarbonyl groups such as acetyl, propionyl, butyryl, pentanoyl, hexanoyl, valeryl and octanoyl; arylcarbonyl groups such as benzoyl and naphthoyl; methoxycarbonyl, ethoxycarbonyl and tert-butoxy An alkoxycarbonyl group such as carbonyl, n-decyloxycarbonyl, n-hexadecyloxycarbonyl; an aryloxycarbonyl group such as phenoxycarbonyl, naphthyloxycarbonyl, and the like;
The sulfonyl group represented by R1, R2, R4 and R5 is an alkylsulfonyl group such as methylsulfonyl, ethylsulfonyl, propylsulfonyl, butylsulfonyl, pentylsulfonyl, hexylsulfonyl, octylsulfonyl, dodecylsulfonyl, hexadecylsulfonyl; phenylsulfonyl, Arylsulfonyl groups such as naphthylsulfonyl; alkoxysulfonyl groups such as methoxysulfonyl, ethoxysulfonyl, tert-butoxysulfonyl, n-decyloxysulfonyl, n-hexadecyloxysulfonyl; aryloxysulfonyl groups such as phenoxysulfonyl, naphthyloxysulfonyl, etc. Represent.

The carbamoyl group represented by R1, R2, R4, R5 is a carbamoyl group; a mono-substituted carbamoyl group such as carbamoyl; N-methylcarbamoyl, N- (tert-butyl) carbamoyl, N-dodecylcarbamoyl, N-octadecylcarbamoyl, N-phenylcarbamoyl, etc. A disubstituted carbamoyl group such as N, N-dimethylcarbamoyl, N, N-dihexylcarbamoyl, N, N-didodecylcarbamoyl, N, N-diphenylcarbamoyl;
The sulfamoyl group represented by R1, R2, R4 and R5 is sulfamoyl; N-ethylsulfamoyl, N- (iso-hexyl) sulfamoyl, N-ethylsulfamoyl, N-decylsulfamoyl, N-hexadecyl Monosubstituted sulfamoyl groups such as sulfamoyl and N-phenylsulfamoyl; N, N-dimethylsulfamoyl, N, N-dibutoxysulfamoyl, N, N-dioctylsulfamoyl, N, N-tetra Represents a disubstituted sulfamoyl group such as decylsulfamoyl, N, N-diphenylsulfamoyl and the like.

The alkylthio group represented by R1, R2, R4 and R5 is an alkylthio having 1 to 20 carbon atoms such as methylthio, ethylthio, propylthio, butylthio, pentylthio, hexylthio, heptylthio, octylthio, nonylthio, decylthio, dodecylthio, hexadecylthio, octadecylthio, etc. Represents a group.
The arylthio group represented by R1, R2, R4 and R5 represents phenylthio, naphthylthio and the like.
The thiocarbonyl group represented by R1, R2, R4 and R5 is an alkylthiocarbonyl group such as methylthiocarbonyl, ethylthiocarbonyl, butylthiocarbonyl, hexylthiocarbonyl, octylthiocarbonyl, dodecylthiocarbonyl, octadecylthiocarbonyl, etc .; phenylthiocarbonyl And an arylthiocarbonyl group such as naphthylthiocarbonyl.

The amino group represented by R1, R2, R4, R5 is amino; N-methylamino, N-butylamino, N-hexylamino, N-decylamino, N-tetradecylamino, N-octadecylamino, N-phenylamino Monosubstituted amino groups such as N-naphthylamino, N, N-diethylamino, N, N-diheptylamino, N, N-dioctylamino, N, N-dodecylamino, N, N-octadecylamino, N, N -Represents a disubstituted amino group such as diphenylamino.
The carbonylamino group represented by R1, R2, R4 and R5 is acetylamino, ethylcarbonylamino, tert-butylcarbonylamino, n-octylcarbonylamino, n-hexadecylcarbonylamino, benzoylamino, naphthoylamino, methoxycarbonyl Amino, ethoxycarbonylamino, n-octyloxycarbonylamino, n-hexadecyloxycarbonylamino and the like are represented.
The sulfonylamino group represented by R1, R2, R4 and R5 is methylsulfonylamino, ethylsulfonylamino, tert-butylsulfonylamino, n-hexylsulfonylamino, iso-dodecylsulfonylamino, n-octadecylsulfonylamino, phenylsulfonylamino , Naphthylsulfonylamino and the like.

The heterocyclic residue represented by R1, R2, R4 and R5 is a heterocyclic group containing 1 to 4 atoms selected from a heteroatom group such as nitrogen, oxygen, sulfur, selenium and phosphorus excluding pyridine. For example, thiophene, furan, pyran, pyrrole, pyrazine, azepine, azocine, azocine, azecine, oxazole, thiazole, pyrimidine, pyridazine, triazine, triazole, tetrazole, imidazole, pyrazole, morpholine, thiomorpholine, piperidine, piperazine, quinoline, Isoquinoline, indole, isoindole, quinoxaline, phthalazine, quinolidine, quinazoline, quinoxaline, naphthyridine, benzofuran, benzothiophene, xanthene, benzothiophene, selenophene, 2H-selenopyran, phosphorane, phophore It represents holin, oxathiol, phenoxathiin Ann, 1,2-oxa seleno run, 1,3-oxa seleno orchid, 1,2 Chiaserenoran, 1,3 oxaphospholane like.
The halogen atom represented by R1, R2, R4 and R5 represents chlorine, bromine, iodine or fluorine.

  The substituent which these groups further have is not particularly limited. Examples of the substituent further include, but are not limited to, alkyl, alkenyl, phenyl, alkoxy, phenoxy, amino, alkylthio, phenylthio, halogen atom and the like.

Further, the compound according to the present invention can be used by polymerizing it as a monomer. The polymer may be a homopolymer or a copolymer with another monomer. Alternatively, the compound according to the present invention may be reacted with a previously polymerized polymer to be introduced as a partial structure.
Although the average molecular weight of a polymer changes with substituents, Preferably it is 400-120,000, More preferably, it is 600-100000.

  Specific examples of the compound represented by formula (I) are shown below, but the present invention is not limited to these compounds. In addition, about a polymer, in the case of a homopolymer, X represents an integer of 10 to 150, and in the case of a copolymer, the sum of m and n represents an integer of 10 to 150.

The pyridine derivative represented by the general formula (I) according to the present invention can be synthesized by a known method. For example, pyridine ring formation reaction between acetylpyridine and 3-amino-2-propenylideneammonium salts (Japanese Patent Laid-Open No. 2001-261653), and pyridine ring formation reaction between acetylpyridine and 3-aminoacrolein (Japanese Patent 2000-355580), pyridine ring formation reaction between pyridyltriazine compound and norbornadiene (JP 2000-355881), pyridine ring formation reaction with pyridyltriazine compound and vinyl ester (JP 2001-158773), Grignard reaction Cross-coupling reaction (JP-A-64-3169), cross-coupling reaction with alkyltin derivatives (Tetrahedron Lett., 33, 2199 (1992)), halogenated pyridine in the presence of Ni catalyst It can be synthesized by various methods such as a compound cross-coupling method (WO9852922).
The polymer polymerization method of the present invention can be carried out by a known method, for example, the method described in “Experimental Chemistry Course 4th Edition, Volume 28,“ Polymer Synthesis ”, Maruzen 1992”.

The organic EL device of the present invention is a device in which a light emitting layer or a plurality of organic compound thin films including a light emitting layer is formed between a pair of electrodes of an anode and a cathode. In addition to the light emitting layer, a hole injection layer and a hole transport layer are formed. , An electron injection layer, an electron transport layer, a protective layer, and the like, and each of these layers may have other functions. Various materials can be used for forming each layer.
The compound according to the present invention is useful as a light-emitting material for forming a light-emitting layer in an organic EL device, and further has excellent electron injection and electron transport properties. It can also be used as a material or an electron transport material. In addition to the light emitting layer, the compound according to the present invention may be contained in an organic layer constituting the organic EL device, for example, a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer, or the like. It is preferably contained in the electron transport layer or the light emitting layer, and more preferably contained in the light emitting layer.

As a material constituting the anode, materials conventionally used in organic EL elements such as metals, alloys, metal oxides, electrically conductive compounds having a work function smaller than 4 eV can be used. Specifically, metal oxides such as indium tin oxide (ITO), tin oxide, and zinc oxide; metals such as gold, silver, chromium, and nickel; inorganic conductive materials such as copper iodide and copper sulfide; polyaniline, polythiophene, Examples include, but are not limited to, organic conductive materials such as polypyrrole. Of these, ITO is preferred. Since the anode emits light from the electrode, the light transmittance is preferably 10% or more, and the sheet resistance as the anode is preferably several hundred Ω / □ or less. The film thickness of the anode varies depending on the material, but is usually 1 nm to 5 μm, preferably 5 nm to 1 μm, more preferably 10 to 500 nm.
As a material constituting the cathode, materials conventionally used in organic EL elements such as metals, alloys, metal oxides, and electrically conductive compounds having a work function larger than 4 eV can be used. Specifically, alkali metals such as lithium, sodium and potassium or fluorides thereof; alkaline earth metals such as magnesium and calcium or fluorides thereof; metals such as gold, silver, lead and aluminum; sodium-potassium, lithium-aluminum , Alloys such as magnesium-silver or mixed metals thereof; rare earth metals such as indium and ytterbium, and the like, preferably aluminum, lithium-aluminum alloy, magnesium-silver alloy, and the like. The sheet resistance as the cathode is preferably several hundred Ω / □ or less. Although the film thickness of a cathode changes with materials, it is 1 nm-5 micrometers normally, Preferably it is 5 nm-1 micrometer, More preferably, it is 10-500 nm.

The hole injection layer and the hole transport layer may have any of a function of injecting holes from the anode, a function of transmitting injected holes, and a function of blocking electrons injected from the cathode. Those conventionally used in organic EL elements can be used. Examples of the material for the hole injection layer and the hole transport layer include arylamine derivatives, phenylenediamine derivatives, hydrazone derivatives, stilbene derivatives, triazole derivatives, diazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives, pyrazolone derivatives, and the like. However, it is not limited to these. The thicknesses of the hole injection layer and the hole transport layer are not particularly limited, but are usually 1 nm to 3 μm, preferably 5 nm to 1 μm, and more preferably 10 nm to 500 nm.
The electron injection layer and the electron transport layer only have to have one of the function of injecting electrons from the cathode, the function of transmitting injected electrons, and the function of blocking holes injected from the anode. What is used for the EL element can be used. Specific examples include, but are not limited to, fluorenone derivatives, anthraquinodimethane derivatives, diphenylquinone derivatives, thiopyran dioxide oxide derivatives, oxadiazole derivatives, triazole derivatives, fluorenylidenemethane derivatives, and anthrone derivatives. It is not something. Although the film thickness of an electron injection layer and an electron carrying layer is not specifically limited, Usually, 1 nm-3 micrometers, Preferably they are 5 nm-1 micrometer, More preferably, they are 10 nm-500 nm.
Further, it can be sensitized by adding an electron accepting substance to the hole transport material and an electron donating substance to the electron transport material.
Examples of the material constituting the support substrate include glass, transparent plastic, and quartz.

When manufacturing the organic EL device of the present invention, as a method for thinning, a coating method such as a spin coating method or a casting method, a vacuum deposition method, an LB method, a printing method, an ink jet method, or the like is used. Vapor deposition or spin coating is preferred. In the vacuum deposition method, for example, each material may be sequentially deposited on a support substrate on which ITO as an anode is formed in advance using, for example, a general vacuum deposition apparatus. Deposition conditions vary depending on the type of compound used, but the temperature of the supporting substrate is usually −50 to 300 ° C., the degree of vacuum is 1 × 10 ⁻⁶ to 1 × 10 ⁻² Pa, and the deposition rate is 0.01 to 50 nm / It is desirable to select appropriately within the range of minutes. In the case of the spin coating method, the coating solvent can be freely selected depending on the polymer. For example, alcohols such as methanol and ethanol, acids such as acetic acid, glycol solvents such as ethylene glycol, water, other highly polar solvents, or aromatics Group hydrocarbons, halogenated hydrocarbons, and other low polarity solvents.

  EXAMPLES Next, although an Example demonstrates this invention further more concretely, this invention is not limited to these.

[Example 1]
Synthesis of 5-phenoxy-2,4′-bipyridine (Exemplary Compound b-3) 3- (Dimethylamino) -2-phenoxy-2-propenal (80.3 g) was dissolved in tetrahydrofuran (500 ml). 4-Acetylpyridine (48.5 g) and potassium t-butoxide (121.2 g) were added, and the mixture was stirred at 30 ° C. for 30 minutes. Ammonium acetate (185.0 g) and acetic acid (140 ml) were added, and the mixture was reacted at an internal temperature of 95 ° C. for 4 hours while distilling off tetrahydrofuran. A 25% aqueous NaOH solution (400 ml) was added to the reaction solution for crystallization, followed by drying to obtain the desired product (78.7 g, yield 79.2%).

[Example 2]
A glass substrate on which indium tin oxide (ITO) with a film thickness of 100 nm is formed is ultrasonically cleaned with pure water and then with isopropyl alcohol for 15 minutes each, dried with nitrogen gas, and fixed to a substrate holder of a commercially available vacuum deposition apparatus. did. 200 mg of 4,4′-bis [N- (1-naphthyl) -N-phenylamino] biphenyl (hereinafter abbreviated as NPD) was placed in a molybdenum vapor deposition boat, and Example 1 was placed in another molybdenum vapor deposition boat. 200 mg of the exemplified compound (b-3) synthesized in (1) was added, and (2- (4-biphenylyl) -5- (4-tert-butylphenyl) -1,3,4) was added to another molybdenum vapor deposition boat. 200 mg of oxadiazole (hereinafter abbreviated as PBD) was added, a molybdenum evaporation boat containing lithium fluoride and a tungsten evaporation boat containing aluminum were prepared, and each boat was mounted. reducing the pressure of the vacuum degree of the inner decreased below 5 × 10 -5 ^Pa, and deposition entered was the energized boat heated support substrate of NPD, a film thickness of 50nm Next, the boat containing the exemplary compound (b-3) was energized and heated, and was deposited on the hole transport layer formed earlier to provide a light emitting layer with a thickness of 50 nm. Next, the boat containing PBD was energized and heated, and was deposited on the previously formed light-emitting layer to provide an electron transport layer having a thickness of 50 nm. It energized and heated and evaporated to a film thickness of 0.5 nm, and finally the boat containing aluminum was energized and heated to evaporate to a film thickness of 100 nm to obtain a light emitting element. When a voltage was applied using a lithium fluoride / aluminum electrode as a negative electrode, a color with an emission wavelength of 480 nm and a luminance of about 7200 cd / m ² was obtained at a driving voltage of 10 V.

[Examples 3 to 7]
Synthesis was performed under the same conditions as in Example 1 except that the raw materials were changed, and an EL device was produced in the same manner as in Example 2. The results are shown in Table 1.

[実施例８]

[Example 8]

In Example 2, tris (8-hydroxyquinolinolato) aluminum (hereinafter abbreviated as Alq ₃ ) was used as the light emitting material, and the example compound (a-19) was prepared by synthesizing the hole transport material in the same manner as in Example 1. A light emitting device was produced under the same conditions and method as in Example 2 except that the above was changed. When a voltage was applied using the ITO electrode as the positive electrode and the lithium fluoride / aluminum electrode as the negative electrode, a green color with an emission wavelength of 530 nm and a luminance of about 6800 cd / m ² was obtained at a driving voltage of 10V. Note that the durability of the light-emitting element was maintained at a luminance of 70% or more in 400 hours.
[Example 9]

A light-emitting device under the same conditions and method as in Example 2 except that the light-emitting material was changed to Alq ₃ in Example 2 and the electron transport material was changed to the exemplified compound (b-7) synthesized by the same method as in Example 1. It was created. When a voltage was applied with the ITO electrode as the positive electrode and the lithium fluoride / aluminum electrode as the negative electrode, a green color with an emission wavelength of 523 nm and a luminance of about 7300 cd / m ² was obtained at a driving voltage of 10V. Note that the durability of the light-emitting element was maintained at a luminance of 70% or more in 400 hours.
[Example 10]

Synthesis of Exemplary Compound (c-1) 5-vinyl-2- (4′-pyridyl) pyridine was synthesized in the same manner as in Example 1. A 200 ml three-necked flask was charged with 60 ml of dimethylacetamide (DMAc) and 25.7 g (0.141 mol) of 5-vinyl-2- (4′-pyridyl) pyridine under a nitrogen stream and heated to 65 ° C. A solution of 0.35 g (1.41 mmol) of 2,2′-azobis (2,4-dimethylvaleronitrile) in 5 ml of DMAc was added and stirred for 6 hours while maintaining the internal temperature at 65 ° C. The reaction solution was cooled to room temperature, reprecipitated with a large amount of water, and then filtered to obtain 23.1 g (yield 90%) of the desired product. The number average molecular weight of the obtained polymer was 15,000.

[Example 11]
A glass substrate on which indium tin oxide (ITO) having a thickness of 100 nm was formed was subjected to ultrasonic cleaning with pure water and then isopropyl alcohol for 15 minutes each and dried with nitrogen gas. A 10 ml chloroform solution of 20 mg of the exemplary compound (c-1) obtained in Example 10 was spin-coated at 3000 rpm for 20 seconds and dried at 150 ° C. for 2.5 hours under reduced pressure to form a 100 nm-thick hole transport layer. Formed. Thereon, and the Alq ₃ as a light-emitting layer was deposited to a film thickness 50nm or less vacuum of 5 × ¹⁰ -5 Pa. Furthermore, PBD was vapor-deposited with a film thickness of 50 nm as an electron transport layer thereon. Subsequently, magnesium: silver = 10: 1 was co-evaporated to a film thickness of 250 nm, and then silver was evaporated to a film thickness of 300 nm. When a voltage was applied with the ITO electrode as the positive electrode and the magnesium / silver electrode as the negative electrode, a green color with an emission wavelength of 526 nm and a luminance of about 6700 cd / m ² was obtained at a driving voltage of 10V. Note that the durability of the light-emitting element maintained a luminance of 70% or more in 500 hours.

Claims (5)

An organic electroluminescent device comprising a pyridine derivative represented by the following general formula (I):

In the formula, R 1 and R 2 are each independently a hydrogen atom, alkyl group, alkenyl group, alkynyl group, aryl group, hydroxy group, alkoxy group, aryloxy group, carboxyl group, carbonyl group, sulfonyl group, carbamoyl group, sulfamoyl. Group, an alkylthio group, an arylthio group, a thiocarbonyl group, an amino group, a carbonylamino group, a sulfonylamino group, a cyano group, a heterocyclic residue other than pyridine, or a halogen atom, and R3 represents the following structural formula (II ) Or (III).

In the formula, R4 and R5 are each independently a hydrogen atom, alkyl group, alkenyl group, alkynyl group, aryl group, hydroxy group, alkoxy group, aryloxy group, carboxyl group, carbonyl group, sulfonyl group, carbamoyl group, sulfamoyl. A group, an alkylthio group, an arylthio group, a thiocarbonyl group, an amino group, a carbonylamino group, a sulfonylamino group, a cyano group, a heterocyclic residue other than pyridine, or a halogen atom. 2. The organic electroluminescence device according to claim 1, wherein in the general formulas (I) to (III), R 1, R 2, R 4, and R 5 are each independently any one of a hydrogen atom, an alkyl group, and an aryl group. An organic electroluminescence device comprising a polymer having at least one pyridine derivative according to claim 2 as a partial structure thereof. 2. The general formulas (I) to (III), wherein at least one of R 1, R 2, R 4, and R 5 is any one of a heterocyclic residue excluding an alkoxy group, an aryloxy group, an amino group, and pyridine. Organic electroluminescence device. An organic electroluminescence device comprising a polymer having at least one pyridine derivative according to claim 4 as a partial structure thereof.