CN110869366A - Heterocyclic compound and organic light emitting device including the same - Google Patents

Heterocyclic compound and organic light emitting device including the same Download PDF

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CN110869366A
CN110869366A CN201980003521.3A CN201980003521A CN110869366A CN 110869366 A CN110869366 A CN 110869366A CN 201980003521 A CN201980003521 A CN 201980003521A CN 110869366 A CN110869366 A CN 110869366A
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CN110869366B (en
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朴瑟灿
李东勳
张焚在
郑珉祐
李征夏
韩修进
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LG Chem Ltd
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Abstract

The present invention provides a novel heterocyclic compound and an organic light emitting device using the same.

Description

Heterocyclic compound and organic light emitting device including the same
Technical Field
Cross reference to related applications
The present application claims priority based on korean patent application No. 10-2018-0010013, 26.1.2018, the entire contents of which are incorporated herein by reference.
The present invention relates to a novel heterocyclic compound and an organic light emitting device including the same.
Background
In general, the organic light emitting phenomenon refers to a phenomenon of converting electric energy into light energy using an organic substance. An organic light emitting device using an organic light emitting phenomenon has a wide viewing angle, excellent contrast, a fast response time, and excellent luminance, driving voltage, and response speed characteristics, and thus a great deal of research is being conducted.
An organic light emitting device generally has a structure including an anode and a cathode, and an organic layer located between the anode and the cathode. In order to improve the efficiency and stability of the organic light emitting device, the organic layer is often formed of a multilayer structure formed of different materials, and may be formed of, for example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, or the like. With the structure of such an organic electroluminescent device, if a voltage is applied between both electrodes, holes are injected from the anode to the organic layer, electrons are injected from the cathode to the organic layer, excitons (exiton) are formed when the injected holes and electrons meet, and light is emitted when the excitons are transitioned to the ground state again.
For organic materials used for the organic light emitting devices as described above, development of new materials is continuously demanded.
Documents of the prior art
Patent document
(patent document 0001) Korean patent laid-open publication No. 10-2000-0051826
Disclosure of Invention
Problems to be solved
The present invention relates to a novel heterocyclic compound and an organic light emitting device including the same.
Means for solving the problems
The present invention provides a compound represented by the following chemical formula 1:
[ chemical formula 1]
Figure BDA0002362403830000021
In the above-described chemical formula 1,
y is S, O or CR'2
R' is each independently substituted or unsubstituted C1-60Alkyl, substituted or unsubstituted C1-60Alkoxy, substituted or unsubstituted C3-60Cycloalkyl, substituted or unsubstituted C6-60Aryl, substituted or unsubstituted C6-60Aryloxy group, or substituted or unsubstituted C containing 1 or more of O, N, Si and S2-60(ii) a heteroaryl group, wherein,
R1to R7Each independently is halogen, hydroxy, cyano, nitrile, nitro, amino, substituted or unsubstituted C1-60Alkyl, substituted or unsubstituted C1-60Haloalkyl, substituted or unsubstituted C1-60Thioalkyl, substituted or unsubstituted C1-60Alkoxy, substituted or unsubstituted C1-60Haloalkoxy, substituted or unsubstituted C3-60Cycloalkyl, substituted or unsubstituted C1-60Alkenyl, substituted or unsubstituted C6-60Aryl, substituted or unsubstituted C6-60Aryloxy group, or substituted or unsubstituted C containing 1 or more of O, N, Si and S2-60(ii) a heteroaryl group, wherein,
a. e and g are each independently 0 to 4,
b. d and f are each independently 0 to 3,
c is 0 to 5.
The present invention also provides an organic light-emitting device including a first electrode, a second electrode provided so as to face the first electrode, and 1 or more organic layers provided between the first electrode and the second electrode, wherein 1 or more of the organic layers include a compound represented by chemical formula 1.
Effects of the invention
The compound represented by the above chemical formula 1 may be used as a material of an organic layer of an organic light emitting device in which improvement of efficiency, lower driving voltage, and/or improvement of life span characteristics can be achieved. In particular, the compound represented by the above chemical formula 1 may be used as a material for hole injection, hole transport, hole injection and transport, light emission.
Drawings
Fig. 1 illustrates an example of an organic light-emitting device composed of a substrate 1, an anode 2, a light-emitting layer 3, and a cathode 4.
Fig. 2 illustrates an example of an organic light-emitting device composed of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, an electron blocking layer 7, a light-emitting layer 8, an electron transport layer 9, an electron injection layer 10, and a cathode 4.
Fig. 3 illustrates an example of an organic light-emitting device composed of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 8, an electron transport layer 9, an electron injection and transport layer 11, and a cathode 4.
Detailed Description
Hereinafter, the present invention will be described in more detail to assist understanding thereof.
The present invention provides a compound represented by the above chemical formula 1.
In the context of the present specification,
Figure BDA0002362403830000031
and
Figure BDA0002362403830000032
refers to a bond to another substituent.
In the present specification, the term "substituted or unsubstituted" means substituted with a substituent selected from deuterium; a halogen group; a nitrile group; a nitro group; a hydroxyl group; a carbonyl group; an ester group; an imide group; an amino group; a phosphine oxide group; an alkoxy group; an aryloxy group; alkylthio radicals (A), (B), (C), (D), (
Figure BDA0002362403830000033
Alkyl thio xy); arylthio radicals (A), (B), (C
Figure BDA0002362403830000034
Figure BDA0002362403830000035
Aryl thio xy); alkylsulfonyl (
Figure BDA0002362403830000036
Alkyl sulfo xy); arylsulfonyl (
Figure BDA0002362403830000037
Aryl sulfoxy); a silyl group; a boron group; an alkyl group; a cycloalkyl group; an alkenyl group; an aryl group; aralkyl group; an aralkenyl group; an alkylaryl group; an alkylamino group; an aralkylamino group; a heteroaryl amino group; an arylamine group; an aryl phosphine group; or 1 or more substituents of 1 or more heterocyclic groups containing N, O and S atoms, or substituents formed by connecting 2 or more substituents of the above-exemplified substituents. For example, "a substituent in which 2 or more substituents are linked" may be a biphenyl group. That is, the biphenyl group may be an aryl group or may be interpreted as a substituent in which 2 phenyl groups are linked.
In the present specification, the number of carbon atoms of the carbonyl group is not particularly limited, but is preferably 1 to 40. Specifically, the compound may have the following structure, but is not limited thereto.
Figure BDA0002362403830000041
In the ester group, in the present specification, the oxygen of the ester group may be substituted with a linear, branched or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms. Specifically, the compound may be a compound of the following structural formula, but is not limited thereto.
Figure BDA0002362403830000042
In the present specification, the number of carbon atoms in the imide group is not particularly limited, but is preferably 1 to 25. Specifically, the compound may have the following structure, but is not limited thereto.
Figure BDA0002362403830000043
In the present specification, specific examples of the silyl group include, but are not limited to, a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, and a phenylsilyl group.
In the present specification, the boron group includes specifically a trimethylboron group, a triethylboron group, a t-butyldimethylboron group, a triphenylboron group, a phenylboron group and the like, but is not limited thereto.
In the present specification, examples of the halogen group include fluorine, chlorine, bromine, and iodine.
In the present specification, the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 40. According to one embodiment, the alkyl group has 1 to 20 carbon atoms. According to another embodiment, the alkyl group has 1 to 10 carbon atoms. According to another embodiment, the alkyl group has 1 to 6 carbon atoms. Specific examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an n-propyl group, an isopropyl group, a butyl group, an n-butyl group, an isobutyl group, a tert-butyl group, a sec-butyl group, a 1-methylbutyl group, a 1-ethylbutyl group, a pentyl group, an n-pentyl group, an isopentyl group, a neopentyl group, a tert-pentyl group, a hexyl group, a n-hexyl group, a 1-methylpentyl group, a 2-methylpentyl group, a 4-methyl-2-pentyl group, a3, 3-dimethylbutyl group, a 2-ethylbutyl group, a heptyl group, a n-heptyl group, a 1-methylhexyl group, a cyclopentylmethyl group, a cyclohexylmethyl group, an octyl group, a n-octyl group, a tert-octyl group, a 1-methylheptyl group, a 2-ethylhexyl group, a 2-propyl, Isohexyl, 2-methylpentyl, 4-methylhexyl, 5-methylhexyl, and the like, but are not limited thereto.
In the present specification, the alkenyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to one embodiment, the number of carbon atoms of the alkenyl group is 2 to 20. According to another embodiment, the number of carbon atoms of the alkenyl group is 2 to 10. According to another embodiment, the number of carbon atoms of the above alkenyl group is 2 to 6. Specific examples thereof include, but are not limited to, vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-methyl-1-butenyl, 1, 3-butadienyl, allyl, 1-phenylethen-1-yl, 2-diphenylethen-1-yl, 2-phenyl-2- (naphthalen-1-yl) ethen-1-yl, 2-bis (biphenyl-1-yl) ethen-1-yl, stilbenyl, and styryl.
In the present specification, the cycloalkyl group is not particularly limited, but is preferably a cycloalkyl group having 3 to 60 carbon atoms. According to one embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another embodiment, the number of carbon atoms of the above cycloalkyl group is 3 to 6. Specifically, there may be mentioned, but not limited to, cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2, 3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2, 3-dimethylcyclohexyl, 3,4, 5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl and the like.
In the present specification, the aryl group is not particularly limited, but is preferably an aryl group having 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to one embodiment, the aryl group has 6 to 30 carbon atoms. According to one embodiment, the aryl group has 6 to 20 carbon atoms. With respect to the above aryl radicals, asThe monocyclic aryl group may be phenyl, biphenyl, terphenyl, etc., but is not limited thereto. The polycyclic aromatic group may be a naphthyl group, an anthryl group, a phenanthryl group, a pyrenyl group, a perylenyl group, a perylene group,
Figure BDA0002362403830000061
And a fluorenyl group, but is not limited thereto.
In the present specification, the fluorenyl group may be substituted, and 2 substituents may be combined with each other to form a spiro structure. In the case where the above-mentioned fluorenyl group is substituted, it may be
Figure BDA0002362403830000062
And the like, but is not limited thereto.
In the present specification, the heterocyclic group is a heterocyclic group containing at least 1 of O, N, Si and S as a heteroatom, and the number of carbon atoms is not particularly limited, but is preferably 2 to 60. Examples of the heterocyclic group include thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, and the like,
Figure BDA0002362403830000063
Azolyl group,
Figure BDA0002362403830000064
Oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolyl, quinazolinyl, quinoxalinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl, isoquinolyl, indolyl, carbazolyl, benzobenzoxazinyl
Figure BDA0002362403830000065
Azolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothienyl, dibenzothienyl, benzofuranyl, phenanthrolinyl (phenanthroline), isoquinoyl
Figure BDA0002362403830000066
Oxazolyl, thiadiazolyl, phenothiazinyl, dibenzofuranyl, and the like, but is not limited thereto.
In the present specification, the aryl group in the aralkyl group, aralkenyl group, alkylaryl group, and arylamine group is the same as the above-mentioned examples of the aryl group. In the present specification, the alkyl group in the aralkyl group, the alkylaryl group, and the alkylamino group is the same as the above-mentioned examples of the alkyl group. In the present specification, the heteroaryl group in the heteroarylamine can be applied to the above-mentioned description of the heterocyclic group. In the present specification, the alkenyl group in the aralkenyl group is the same as the above-mentioned examples of the alkenyl group. In the present specification, the arylene group is a 2-valent group, and the above description of the aryl group can be applied thereto. In the present specification, a heteroarylene group is a 2-valent group, and in addition to this, the above description about a heterocyclic group can be applied. In the present specification, the hydrocarbon ring is not a 1-valent group but is formed by combining 2 substituents, and in addition to this, the above description about the aryl group or the cycloalkyl group can be applied. In the present specification, the heterocyclic group is not a 1-valent group but a combination of 2 substituents, and the above description of the heterocyclic group can be applied.
On the other hand, in the chemical formula 1, R' is preferably a methyl group.
In the above chemical formula 1, a, b, c, d, e and f may be 0.
In the above chemical formula 1, R1To R7At least 1 of which may be cyano.
The chemical formula 1 may be any one selected from the following compounds.
Figure BDA0002362403830000071
In the above 1-1 to 1-16, Y may be S, O or CR'2
The above definition of R' is the same as that mentioned previously.
Preferably, the compound represented by the above chemical formula 1 may be any one selected from the following compounds.
Figure BDA0002362403830000081
Figure BDA0002362403830000091
Figure BDA0002362403830000101
The compound represented by the above chemical formula 1 can be produced by the production method of the following reaction formula 1. The above-described manufacturing method can be further embodied in the manufacturing examples described later.
[ reaction formula 1]
Figure BDA0002362403830000111
In the above reaction formula 1, the description of Y is the same as that in the above chemical formula 1.
The compound represented by the above chemical formula 1 can be produced by referring to the above reaction formula 1 and appropriately replacing the starting material corresponding to the structure of the compound to be produced.
In addition, the present invention provides an organic light emitting device comprising the compound represented by the above chemical formula 1. As an example, the present invention provides an organic light emitting device, comprising: the organic light emitting device includes a first electrode, a second electrode provided to face the first electrode, and one or more organic layers provided between the first electrode and the second electrode, wherein one or more of the organic layers include a compound represented by the chemical formula 1.
The organic layer of the organic light-emitting device of the present invention may be formed of a single layer structure, or may be formed of a multilayer structure in which two or more organic layers are stacked. For example, the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like as an organic layer. However, the structure of the organic light emitting device is not limited thereto, and a smaller number of organic layers may be included.
In addition, the organic layer may include a hole injection layer, a hole transport layer, or a hole injection and transport layer (a layer that simultaneously performs hole injection and transport), which includes the compound represented by the above chemical formula 1.
In addition, the organic layer may include a light emitting layer including the compound represented by the chemical formula 1.
In addition, the light emitting layer includes 2 or more hosts, and 1 of the hosts includes the compound represented by the chemical formula 1.
In addition, the organic layer may include an electron transport layer, an electron injection layer, or an electron injection and transport layer (a layer that performs electron injection and transport simultaneously), and the electron transport layer, the electron injection layer, or the electron injection and transport layer includes the compound represented by the above chemical formula 1.
In addition, the electron transport layer, the electron injection layer, or the electron transport and injection layer includes the compound represented by the above chemical formula 1.
In addition, the organic layer may include a light emitting layer and an electron transport layer, and the electron transport layer may include a compound represented by the chemical formula 1.
In addition, the organic light emitting device according to the present invention may be an organic light emitting device having a structure (normal type) in which an anode, 1 or more organic layers, and a cathode are sequentially stacked on a substrate. In addition, the organic light emitting device according to the present invention may be an inverted (inverted) type organic light emitting device in which a cathode, 1 or more organic layers, and an anode are sequentially stacked on a substrate. For example, a structure of an organic light emitting device according to an embodiment of the present invention is illustrated in fig. 1 and 2.
Fig. 1 illustrates an example of an organic light-emitting device composed of a substrate 1, an anode 2, a light-emitting layer 3, and a cathode 4. In the structure as described above, the compound represented by the above chemical formula 1 may be included in the above light emitting layer.
Fig. 2 illustrates an example of an organic light-emitting device composed of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, an electron blocking layer 7, a light-emitting layer 8, an electron transport layer 9, an electron injection layer 10, and a cathode 4. In the structure as described above, the compound represented by the above chemical formula 1 may be contained in 1 or more layers among the above hole injection layer, hole transport layer, electron blocking layer, light emitting layer, electron transport layer, and electron injection layer.
Fig. 3 illustrates an example of an organic light-emitting device composed of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 8, an electron transport layer 9, an electron injection and transport layer 11, and a cathode 4. In the structure as described above, the compound represented by the above chemical formula 1 may be contained in 1 or more layers among the above hole injection layer, hole transport layer, light emitting layer, electron transport layer, and electron injection and transport layer.
The organic light emitting device according to the present invention may be manufactured using materials and methods well known in the art, except that 1 or more of the above organic layers include the compound represented by the above chemical formula 1. In addition, in the case where the organic light emitting device includes a plurality of organic layers, the organic layers may be formed of the same substance or different substances.
For example, the organic light emitting device according to the present invention may be manufactured by sequentially stacking a first electrode, an organic layer, and a second electrode on a substrate. This can be produced as follows: the organic el device is manufactured by depositing a metal, a metal oxide having conductivity, or an alloy thereof on a substrate by a PVD (physical Vapor Deposition) method such as a sputtering method or an electron beam evaporation method (e-beam evaporation) method to form an anode, forming an organic layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer on the anode, and then depositing a substance that can be used as a cathode on the organic layer. In addition to this method, a cathode material, an organic layer, and an anode material may be sequentially deposited on a substrate to manufacture an organic light-emitting device.
In addition, the compound represented by the above chemical formula 1 may be formed into an organic layer not only by a vacuum evaporation method but also by a solution coating method in the manufacture of an organic light emitting device. Here, the solution coating method refers to spin coating, dip coating, blade coating, inkjet printing, screen printing, spraying, roll coating, and the like, but is not limited thereto.
In addition to these methods, an organic light-emitting device can be manufactured by depositing a cathode material, an organic material layer, and an anode material on a substrate in this order (WO 2003/012890). However, the production method is not limited thereto.
In one example, the first electrode is an anode and the second electrode is a cathode, or the first electrode is a cathode and the second electrode is an anode.
The anode material is preferably a material having a large work function in order to smoothly inject holes into the organic layer. Specific examples of the anode material include metals such as vanadium, chromium, copper, zinc, and gold, and alloys thereof; metal oxides such as zinc oxide, Indium Tin Oxide (ITO), and Indium Zinc Oxide (IZO); ZnO: al or SNO2: a combination of a metal such as Sb and an oxide; poly (3-methylthiophene), poly [3,4- (ethylene-1, 2-dioxy) thiophene]Conductive polymers such as (PEDOT), polypyrrole, and polyaniline, but the present invention is not limited thereto.
The cathode material is preferably a material having a small work function in order to easily inject electrons into the organic layer. Specific examples of the cathode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, and alloys thereof; LiF/Al or LiO2And a multilayer structure material such as Al, but not limited thereto.
The hole injection material is a layer for injecting holes from the electrode, and the following compounds are preferable as the hole injection material: the organic light-emitting device has an ability to transport holes, has a hole injection effect from an anode, has an excellent hole injection effect for a light-emitting layer or a light-emitting material, prevents excitons generated in the light-emitting layer from migrating to an electron injection layer or an electron injection material, and has excellent thin film formation ability. Preferably, the HOMO (highest occupied molecular orbital) of the hole injecting substance is between the work function of the anode substance and the HOMO of the surrounding organic layer. Specific examples of the hole injecting substance include, but are not limited to, metalloporphyrin (porphyrin), oligothiophene, arylamine-based organic substances, hexanitrile-hexaazatriphenylene-based organic substances, quinacridone-based organic substances, perylene-based organic substances, anthraquinone, polyaniline, and polythiophene-based conductive polymers.
The hole transport layer is a layer that receives holes from the hole injection layer and transports the holes to the light-emitting layer, and the hole transport material is a material that can receive holes from the anode or the hole injection layer and transport the holes to the light-emitting layer, and is preferably a material having a high mobility to holes. Specific examples thereof include, but are not limited to, arylamine-based organic materials, conductive polymers, and block copolymers in which a conjugated portion and a non-conjugated portion are present simultaneously.
The light-emitting substance is a substance that can receive holes and electrons from the hole-transporting layer and the electron-transporting layer, respectively, and combine them to emit light in the visible light region, and a substance having a high quantum efficiency with respect to fluorescence or phosphorescence is preferable. As a specific example, there is an 8-hydroxyquinoline aluminum complex (Alq)3) (ii) a A carbazole-based compound; dimeric styryl (dimerizedstyryl) compounds; BAlq; 10-hydroxybenzoquinoline-metal compounds; benzo (b) is
Figure BDA0002362403830000141
Azole, benzothiazole and benzimidazole-based compounds; poly (p-phenylene vinylene) (PPV) polymers; spiro (spiroo) compounds; a polyfluorene; rubrene, etc., but not limited thereto.
The light emitting layer may include a host material and a dopant material. The host material includes aromatic fused ring derivatives, heterocyclic compounds, and the like. Specifically, the aromatic condensed ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, and the like, and the heterocyclic ring-containing compounds include carbazole derivatives, dibenzofuran derivatives, and ladder-type furan compounds
Figure BDA0002362403830000142
Pyrimidine derivatives, etc., but are not limited thereto.
As the dopant material, there are aromatic amine derivatives and styryl amine compoundsBoron complexes, fluoranthene compounds, metal complexes, and the like. Specifically, the aromatic amine derivative is an aromatic fused ring derivative having a substituted or unsubstituted arylamino group, and includes pyrene, anthracene, or the like having an arylamino group,
Figure BDA0002362403830000143
Diindenoperene (Periflanthene), etc., and the styrylamine compound is a compound substituted with at least one arylvinyl group on a substituted or unsubstituted arylamine, and is substituted or unsubstituted with 1 or 2 or more substituents selected from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group, and an arylamine group. Specific examples thereof include, but are not limited to, styrylamine, styryldiamine, styryltrimethylamine, and styryltretramine. The metal complex includes, but is not limited to, iridium complexes and platinum complexes.
The electron transporting material is a layer which receives electrons from the electron injecting layer and transports the electrons to the light emitting layer, and is a material which can satisfactorily receive electrons from the cathode and transfer the electrons to the light emitting layer, and is preferably a material having a high mobility to electrons. Specific examples thereof include Al complexes of 8-hydroxyquinoline and Al complexes containing Alq3Organic radical compounds, hydroxyl brass-metal complexes, etc., but are not limited thereto. The electron transport layer may be used with any desired cathode material as used in the art. Examples of suitable cathode substances are, in particular, the usual substances having a low work function and accompanied by an aluminum or silver layer. In particular cesium, barium, calcium, ytterbium and samarium, in each case accompanied by an aluminum or silver layer.
The electron injection layer is a layer for injecting electrons from the electrode, and is preferably a compound of: has an ability to transport electrons, an electron injection effect from a cathode, an excellent electron injection effect with respect to a light-emitting layer or a light-emitting material, prevents excitons generated in the light-emitting layer from migrating to a hole-injecting layer, and is excellent in thin-film formability. Specifically, there are fluorenone, anthraquinone dimethane (Anthraquinodimethane), diphenoquinone, thiopyran dioxide, and,
Figure BDA0002362403830000151
Azole,
Figure BDA0002362403830000152
Oxadiazole, triazole, imidazole, perylene tetracarboxylic acid, fluorenylidene methane, anthrone, and the like, and derivatives thereof, metal complex compounds, nitrogen-containing five-membered ring derivatives, and the like, but are not limited thereto.
Examples of the metal complex include lithium 8-quinolinolato, zinc bis (8-quinolinolato), copper bis (8-quinolinolato), manganese bis (8-quinolinolato), aluminum tris (2-methyl-8-quinolinolato), and gallium tris (8-quinolinolato), bis (10-hydroxybenzo [ h ] quinoline) beryllium, bis (10-hydroxybenzo [ h ] quinoline) zinc, bis (2-methyl-8-quinoline) gallium chloride, bis (2-methyl-8-quinoline) (o-cresol) gallium, bis (2-methyl-8-quinoline) (1-naphthol) aluminum, bis (2-methyl-8-quinoline) (2-naphthol) gallium, and the like, but are not limited thereto.
The organic light emitting device according to the present invention may be a top emission type, a bottom emission type, or a bi-directional emission type, depending on the material used.
In addition, the compound represented by the above chemical formula 1 may be included in an organic solar cell or an organic transistor, in addition to the organic light emitting device.
In the following, preferred embodiments are presented to aid in the understanding of the invention. However, the following examples are only for illustrating the present invention and the present invention is not limited thereto.
[ production example ]
Production example 1: production of intermediate A1
Figure BDA0002362403830000161
2-chloro-4- (4-chlorophenyl) -6-phenyl-1, 3, 5-triazine (15.0g, 49.64mmol), dibenzo [ b, d ] in a 500ml round-bottomed flask under a nitrogen atmosphere]After thiophen-4-ylboronic acid (11.3g, 49.64mmol) was completely dissolved in 210ml of tetrahydrofuran, 1M potassium carbonate solution (150ml) was added, tetrakis (triphenylphosphine) palladium (1.7g, 1.49mmol) was added,the mixture was stirred with heating for 6 hours. The temperature was lowered to room temperature, the aqueous layer was removed, dried over anhydrous magnesium sulfate, concentrated under reduced pressure, and recrystallized from 250ml of ethanol to produce the above-mentioned Compound A1(21.1g, yield: 94%) (MS [ M + H ])]+=450)。
Production example 2: production of intermediate A2
Figure BDA0002362403830000162
Intermediate A1(21.1g, 46.89mmol), bis (pinacolato) diboron (13.1g, 51.58mmol), Pd (dba) in a 1L round bottom flask under nitrogen2(0.8g,1.41mmol)、PCy3(0.8g,2.81mmol) and KOAc (13.8g, 140.68mmol) were added to 300mL of bis
Figure BDA0002362403830000163
In an alkane, the mixture was refluxed and stirred for 2 hours. After completion of the reaction was confirmed by HPLC, the base (base) was removed by filtration, and the solution was concentrated under reduced pressure. Dissolving it in CHCl3After washing with water, the solution containing the product was concentrated under reduced pressure and recrystallized from ethanol to obtain the above-mentioned compound A2(21.1g, yield 83%) (MS [ M + H ]]+=542)。
Production example 3: production of intermediate A3
Figure BDA0002362403830000171
In a 1L round-bottomed flask under nitrogen atmosphere, after completely dissolving Compound A2(21.1g, 38.97mmol) and 1-bromo-2-nitrobenzene (8.7g,42.86mmol) in 200ml of tetrahydrofuran, 2M aqueous potassium carbonate (60ml) was added, tetrakis (triphenylphosphine) palladium (1.4g, 1.17mmol) was added, and the mixture was stirred under heating for 24 hours. The temperature was lowered to room temperature, the aqueous layer was removed, dried over anhydrous magnesium sulfate, concentrated under reduced pressure, and recrystallized from 250ml of ethanol to obtain the above-mentioned Compound A3(17.4g, yield: 83%) (MS [ M + H ])]+=537)。
Production example 4: production of intermediate A4
Figure BDA0002362403830000172
Triethyl phosphite (100mL, 580.3mmol) was added to compound A3(17.4g, 32.43mmol) in a 1L round bottom flask under nitrogen and stirred for 3 hours under heating. The temperature was reduced to normal temperature and filtered to give a solid which was washed with water. The obtained compound was dried to obtain Compound A4(11.3g, yield: 69%) (MS [ M + H ]]+=505)。
[ examples ]
Example 1: production of Compound 1
Figure BDA0002362403830000181
In a 1L round-bottomed flask under nitrogen in compound A4(11.3g, 22.39mmol), 2-bromodibenzo [ b, d ]]After 200mL of xylene was added to thiophene (6.1g, 23.51mmol) and sodium tert-butoxide (4.3g, 44.79mmol), bis (tri-tert-butylphosphine) palladium (0) (0.1g, 0.22mmol) was added, and the mixture was stirred under heating for 1 hour. The temperature was reduced to normal temperature and filtered to give a solid which was washed with water. The obtained compound was dried to obtain Compound 1(5.7g, yield: 37%) (MS [ M + H ]]+=687)。
Example 2: production of Compound 2
Figure BDA0002362403830000182
Using 4-bromodibenzo [ b, d ]]Thiophene instead of 2-bromodibenzo [ b, d ]]Except for thiophene, compound 2(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 3: production of Compound 3
Figure BDA0002362403830000183
Using 1-bromodibenzo [ b, d ]]Thiophene instead of 2-bromodibenzo [ b, d ]]Thiophenes, other thanIn addition, Compound 3(MS [ M + H ] was produced in the same manner as Compound 1]+=687)。
Example 4: production of Compound 4
Figure BDA0002362403830000191
Using 1- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 3-bromodibenzo [ b, d]Thiophene instead of Compound A4 and 2-Bromobenzo [ b, d]Except for thiophene, compound 4(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 5: production of Compound 5
Figure BDA0002362403830000192
Using 2-bromodibenzo [ b, d ]]Thiophene instead of 3-bromodibenzo [ b, d ]]Except for thiophene, compound 5(MS [ M + H) was produced by the same method as the method for producing compound 4]+=687)。
Example 6: production of Compound 6
Figure BDA0002362403830000193
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 4-bromodibenzo [ b, d]Thiophene instead of Compound A4 and 2-Bromobenzo [ b, d]Except for thiophene, compound 6(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 7: production of Compound 7
Figure BDA0002362403830000201
Using 3- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 3-bromodibenzo [ b, d]Thiophene instead of Compound A4 and 2-Bromobenzo [ b, d]Except for thiophene, compound 7(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 8: production of Compound 8
Figure BDA0002362403830000202
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 1-bromodibenzo [ b, d]Thiophene instead of Compound A4 and 2-Bromobenzo [ b, d]Except for thiophene, compound 8(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 9: production of Compound 9
Figure BDA0002362403830000203
Using 4- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 4-bromodibenzo [ b, d]Thiophene instead of Compound A4 and 2-Bromobenzo [ b, d]Except for thiophene, compound 9(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 10: production of Compound 10
Figure BDA0002362403830000211
Using 4- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 2-bromodibenzo [ b, d]Thiophene instead of Compound A4 and 2-Bromobenzo [ b, d]Except for thiophene, compound 10(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 11: production of Compound 11
Figure BDA0002362403830000212
Using 4- (4- (dibenzo [ b, d ]]Thiophene(s)-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 1-bromodibenzo [ b, d]Thiophene instead of Compound A4 and 2-Bromobenzo [ b, d]Except for thiophene, compound 11(MS [ M + H) was produced by the same method as the method for producing compound 1]+=687)。
Example 12: production of Compound 12
Figure BDA0002362403830000213
Using 1- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 4-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 12(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 13: production of Compound 13
Figure BDA0002362403830000221
Using 1- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 2-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 13(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 14: production of Compound 14
Figure BDA0002362403830000222
Using 2- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 3-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 14(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 15: production of Compound 15
Figure BDA0002362403830000223
Using 2- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 2-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 15(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 16: production of Compound 16
Figure BDA0002362403830000231
Using 2- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 1-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 16(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 17: production of Compound 17
Figure BDA0002362403830000232
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 4-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 17(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 18: preparation of Compound 18
Figure BDA0002362403830000233
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 2-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 18(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 19: production of Compound 19
Figure BDA0002362403830000241
Using 4- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 4-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 19(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 20: production of Compound 20
Figure BDA0002362403830000242
Using 4- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 3-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 20(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 21: production of Compound 21
Figure BDA0002362403830000243
Using 4- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 1-bromodibenzo [ b, d]Furan instead of compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 21(MS [ M + H) was produced by the same method as the method for producing compound 1]+=671)。
Example 22: preparation of Compound 22
Figure BDA0002362403830000251
Using 1- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 1-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Thiophene, except for the same method as the method for producing Compound 1By the method, Compound 22(MS [ M + H ] was produced]+=697)。
Example 23: production of Compound 23
Figure BDA0002362403830000252
Using 1- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 3-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Except for thiophene, compound 23(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 24: production of Compound 24
Figure BDA0002362403830000253
Using 2- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 1-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Except for thiophene, compound 24(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 25: production of Compound 25
Figure BDA0002362403830000261
Using 2- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 2-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Except for thiophene, compound 25(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 26: preparation of Compound 26
Figure BDA0002362403830000262
Using 2- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 4-bromo-9, 9-bismethyl-9H-fluorene instead of Compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 26(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 27: production of Compound 27
Figure BDA0002362403830000263
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 2-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Except for thiophene, compound 27(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 28: preparation of Compound 28
Figure BDA0002362403830000271
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 3-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Except for thiophene, compound 28(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 29: production of Compound 29
Figure BDA0002362403830000272
Using 4- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 2-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Except for thiophene, compound 29(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 30: production of Compound 30
Figure BDA0002362403830000273
Using 4- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 4-bromo-9, 9-dimethyl-9H-fluorene instead of compound A4 and 2-bromodibenzo [ b, d]Except for thiophene, compound 30(MS [ M + H) was produced by the same method as the method for producing compound 1]+=697)。
Example 31: production of Compound 31
Figure BDA0002362403830000281
Compound 31(MS [ M + H ] was produced in the same manner as for Compound 1, except that Compound A4-1 was used in place of Compound A4]+=712)。
Example 32: production of Compound 32
Figure BDA0002362403830000282
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 8-bromodibenzo [ b, d]Thiophene-2-carbonitriles instead of Compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 32(MS [ M + H) was produced by the same method as the method for producing compound 1]+=712)。
Example 33: production of Compound 33
Figure BDA0002362403830000283
Using 3- (4- (dibenzo [ b, d ]]Thien-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 6-bromodibenzo [ b, d]Thiophene-3-carbonitriles instead of Compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 33(MS [ M + H) was produced by the same method as the method for producing compound 1]+=712)。
Example 34: preparation of Compound 34
Figure BDA0002362403830000291
Compound 34(MS [ M + H ] was produced in the same manner as for the production of Compound 21, except that Compound A4-2 was used in place of Compound A4]+=696)。
Example 35: production of Compound 35
Figure BDA0002362403830000292
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 7-bromodibenzo [ b, d]Furan-2-carbonitrile instead of Compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 35(MS [ M + H) was produced by the same method as the method for producing compound 1]+=696)。
Example 36: preparation of Compound 36
Figure BDA0002362403830000293
Using 3- (4- (dibenzo [ b, d ]]Thiophen-4-yl) -6-phenyl-1, 3, 5-triazin-2-yl) -9H-carbazole and 8-bromodibenzo [ b, d]Furan-2-carbonitrile instead of Compound A4 and 2-bromodibenzo [ b, d ]]Except for thiophene, compound 36(MS [ M + H) was produced by the same method as the method for producing compound 1]+=696)。
[ Experimental example ]
Experimental example 1-1
Indium Tin Oxide (ITO) and a process for producing the same
Figure BDA0002362403830000301
The glass substrate coated to a thin film thickness of (2) is put in distilled water in which a detergent is dissolved, and washed by ultrasonic waves. In this case, the detergent used was a product of fisher (fischer Co.) and the distilled water used was distilled water filtered twice with a Filter (Filter) manufactured by Millipore Co. After washing ITO for 30 minutes, ultrasonic washing was performed for 10 minutes by repeating twice with distilled water. After the washing of distilled water is finished, adding solvents of isopropanol, acetone and methanol into the distilled waterAfter being washed by ultrasonic wave and dried, the mixture is conveyed to a plasma cleaning machine. After the substrate was cleaned with oxygen plasma for 5 minutes, the substrate was transported to a vacuum evaporator.
On the ITO transparent electrode thus prepared, the following HI-1 compound was added
Figure BDA0002362403830000302
The hole injection layer is formed by thermal vacuum deposition. On the hole injection layer, the following HT-1 compound is added
Figure BDA0002362403830000303
Is formed by thermal vacuum deposition, and a hole transport layer is formed on the HT-1 deposited film by depositing a HT-2 compound
Figure BDA0002362403830000304
The electron blocking layer is formed by vacuum evaporation. On the HT-2 deposited film, the compound 1 produced in example 1, the YGH-1 compound and the phosphorescent dopant YGD-1 were co-deposited at a weight ratio of 44:44:12 to form a light-emitting layer
Figure BDA0002362403830000305
A thick light emitting layer. On the light-emitting layer, the following ET-1 compound is added
Figure BDA0002362403830000306
The electron transport layer was formed by vacuum evaporation, and the following ET-2 compound and Li were co-evaporated on the electron transport layer at a weight ratio of 98:2 to form an electron injection layer. On the electron injection layer, aluminum is added
Figure BDA0002362403830000307
The thickness is evaporated to form a cathode.
Figure BDA0002362403830000311
In the above processIn the process, the evaporation speed of the organic material is maintained
Figure BDA0002362403830000312
Aluminum maintenance
Figure BDA0002362403830000313
The vapor deposition rate of (2), the degree of vacuum of which is maintained at 1X 10 during vapor deposition-7~5×10-8And (4) supporting.
Experimental examples 1-1 to 1-36
An organic light-emitting device was produced in the same manner as in experimental example 1-1, except that in experimental example 1-1, the compounds described in table 1 below were used instead of compound 1 of example 1.
Comparative Experimental examples 1-1 and 1-2
An organic light-emitting device was produced in the same manner as in experimental example 1-1 above, except that in experimental example 1 above, the compounds described in table 1 below were used instead of compound 1 of example 1. On the other hand, compounds of CE1 and CE2 in table 1 below are shown below.
Figure BDA0002362403830000321
In the above experimental examples and comparative experimental examples, the organic light emitting device was set at 10mA/cm2The driving voltage and the luminous efficiency were measured at a current density of 50mA/cm2The time (LT) required for the initial luminance to reach 95% was measured at the current density of (1)95). The results are shown in table 1 below.
[ TABLE 1]
Figure BDA0002362403830000331
As shown in table 1, it was confirmed that the compound of the present invention exhibits superior characteristics in efficiency and life as compared with the comparative experimental examples when used as a light-emitting layer material.
Experimental example 2-1
ITO (indium tin oxide) is added
Figure BDA0002362403830000341
The glass substrate (corning 7059 glass) coated to a thin film thickness of (a) was put in distilled water in which a dispersant was dissolved, and washed by ultrasonic waves. The detergent used was a product of Hill corporation, and distilled water obtained by twice filtration using a filter manufactured by Millipore corporation was used as distilled water. After washing ITO for 30 minutes, ultrasonic washing was performed for 10 minutes by repeating twice with distilled water. After the completion of the distilled water washing, ultrasonic washing was performed in the order of solvents of isopropyl alcohol, acetone, and methanol, and then dried.
On the ITO transparent electrode thus prepared, the following HI-1 compound was added
Figure BDA0002362403830000342
The hole injection layer is formed by thermal vacuum deposition. On the hole injection layer, the following HT-1 compound is added
Figure BDA0002362403830000343
Is formed by vacuum evaporation, and a host H1 and a dopant D1 compound are mixed in a weight ratio of 97.5:2.5 on the hole transport layer
Figure BDA0002362403830000344
The thickness of (2) is vacuum-evaporated to form a light-emitting layer. On the light-emitting layer, the following compound ET-A and
Figure BDA0002362403830000345
the electron transport layer is formed by vacuum evaporation. On the electron transport layer, compound 1 produced in example 1 and LiQ (Lithium lithonium quinate, 8-hydroxyquinolinium) were vacuum-evaporated at a weight ratio of 1:1 to obtain an electron transport layer
Figure BDA0002362403830000346
The thickness of (a) forms an electron injection and transport layer. On the above electron injection and transport layer, lithium fluoride (LiF) is sequentially added to
Figure BDA0002362403830000347
Thickness of aluminum and
Figure BDA0002362403830000348
is deposited to form a cathode.
Figure BDA0002362403830000349
In the above process, the evaporation speed of the organic material is maintained
Figure BDA00023624038300003410
Lithium fluoride maintenance of cathode
Figure BDA00023624038300003411
Deposition rate of (3), aluminum maintenance
Figure BDA00023624038300003412
The vapor deposition rate of (2) is maintained at a vacuum degree of 2X 10 during vapor deposition-7~5×10-6And supporting to thereby fabricate an organic light emitting device.
Experimental examples 2-2 to 2-36
An organic light-emitting device was produced in the same manner as in experimental example 2-1, except that in experimental example 2-1, the compounds shown in table 2 below were used instead of compound 1 of example 1.
Comparative Experimental examples 2-1 and 2-2
An organic light-emitting device was produced in the same manner as in experimental example 2-1, except that in experimental example 2-1, the compounds shown in table 2 below were used instead of compound 1 of example 1. The compounds of CE3 and CE4 of table 2 below are shown below.
Figure BDA0002362403830000351
In the above experimental examples and comparative experimental examples, the organic light emitting device was set at 10mA/cm2The drive voltage and the luminous efficiency were measured at the current density of (2),at 50mA/cm2The time (LT) required for the initial luminance to reach 95% was measured at the current density of (1)95). The results are shown in table 1 below.
[ TABLE 2 ]
Figure BDA0002362403830000361
As shown in table 2, it was confirmed that the compound of the present invention exhibits excellent characteristics in efficiency and life as compared with the comparative experimental examples when used as an electron transport layer material.
[ notation ] to show
1: substrate 2: anode
3: light-emitting layer 4: cathode electrode
5: hole injection layer 6: hole transport layer
7: electron blocking layer 8: luminescent layer
9: electron transport layer 10: electron injection layer
11: an electron injection and transport layer.

Claims (9)

1. A compound represented by the following chemical formula 1:
chemical formula 1
Figure FDA0002362403820000011
Wherein, in the chemical formula 1,
y is S, O or CR'2
R' is each independently substituted or unsubstituted C1-60Alkyl, substituted or unsubstituted C1-60Alkoxy, substituted or unsubstituted C3-60Cycloalkyl, substituted or unsubstituted C6-60Aryl, substituted or unsubstituted C6-60Aryloxy group, or substituted or unsubstituted C containing 1 or more of O, N, Si and S2-60(ii) a heteroaryl group, wherein,
R1to R7Each independently is halogenElements, hydroxy, cyano, nitrile, nitro, amino, substituted or unsubstituted C1-60Alkyl, substituted or unsubstituted C1-60Haloalkyl, substituted or unsubstituted C1-60Thioalkyl, substituted or unsubstituted C1-60Alkoxy, substituted or unsubstituted C1-60Haloalkoxy, substituted or unsubstituted C3-60Cycloalkyl, substituted or unsubstituted C1-60Alkenyl, substituted or unsubstituted C6-60Aryl, substituted or unsubstituted C6-60Aryloxy group, or substituted or unsubstituted C containing 1 or more of O, N, Si and S2-60(ii) a heteroaryl group, wherein,
a. e and g are each independently 0 to 4,
b. d and f are each independently 0 to 3,
c is 0 to 5.
2. The compound of claim 1, wherein R' is methyl.
3. The compound of claim 1, wherein a, b, c, d, e, and f are 0.
4. The compound of claim 1, wherein R1To R7At least 1 of which is cyano.
5. The compound according to claim 1, wherein the compound represented by the chemical formula 1 is represented by any one selected from the group consisting of:
Figure FDA0002362403820000021
the description of Y is the same as defined in claim 1.
6. The compound according to claim 1, wherein the compound represented by the chemical formula 1 is any one selected from the group consisting of:
Figure FDA0002362403820000031
Figure FDA0002362403820000041
Figure FDA0002362403820000051
7. an organic light emitting device, comprising: a first electrode, a second electrode provided so as to face the first electrode, and one or more organic layers provided between the first electrode and the second electrode, wherein one or more of the organic layers contain the compound according to any one of claims 1 to 6.
8. The organic light emitting device according to claim 7, wherein the organic layer containing the compound is an electron injection layer, an electron transport layer, an electron injection and transport layer, or a light emitting layer.
9. The organic light-emitting device according to claim 8, wherein the light-emitting layer contains 2 or more kinds of hosts, and 1 of the hosts is the compound.
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