CN113444098B - Novel heterocyclic compound and organic light-emitting element comprising same - Google Patents

Novel heterocyclic compound and organic light-emitting element comprising same Download PDF

Info

Publication number
CN113444098B
CN113444098B CN202010218466.4A CN202010218466A CN113444098B CN 113444098 B CN113444098 B CN 113444098B CN 202010218466 A CN202010218466 A CN 202010218466A CN 113444098 B CN113444098 B CN 113444098B
Authority
CN
China
Prior art keywords
compound
group
emitting element
aryl
mmol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010218466.4A
Other languages
Chinese (zh)
Other versions
CN113444098A (en
Inventor
阴盛镇
金圣珉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Shentong New Material Co ltd
Original Assignee
Suzhou Shentong New Material Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Shentong New Material Co ltd filed Critical Suzhou Shentong New Material Co ltd
Priority to CN202010218466.4A priority Critical patent/CN113444098B/en
Priority to KR1020200068863A priority patent/KR102214260B1/en
Publication of CN113444098A publication Critical patent/CN113444098A/en
Application granted granted Critical
Publication of CN113444098B publication Critical patent/CN113444098B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/12Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains three hetero rings
    • C07D487/16Peri-condensed systems
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04Ortho-condensed systems
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D491/00Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/04Ortho-condensed systems
    • C07D491/044Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
    • C07D491/048Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring the oxygen-containing ring being five-membered
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D495/00Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
    • C07D495/02Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
    • C07D495/04Ortho-condensed systems
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D519/00Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14Carrier transporting layers
    • H10K50/15Hole transporting layers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14Carrier transporting layers
    • H10K50/16Electron transporting layers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/17Carrier injection layers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/17Carrier injection layers
    • H10K50/171Electron injection layers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/615Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/649Aromatic compounds comprising a hetero atom
    • H10K85/654Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/649Aromatic compounds comprising a hetero atom
    • H10K85/657Polycyclic condensed heteroaromatic hydrocarbons
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/649Aromatic compounds comprising a hetero atom
    • H10K85/657Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6572Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/649Aromatic compounds comprising a hetero atom
    • H10K85/657Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6574Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
    • C09K2211/1018Heterocyclic compounds
    • C09K2211/1025Heterocyclic compounds characterised by ligands
    • C09K2211/1029Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
    • C09K2211/1018Heterocyclic compounds
    • C09K2211/1025Heterocyclic compounds characterised by ligands
    • C09K2211/1029Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
    • C09K2211/1033Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom with oxygen
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
    • C09K2211/1018Heterocyclic compounds
    • C09K2211/1025Heterocyclic compounds characterised by ligands
    • C09K2211/1044Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
    • C09K2211/1018Heterocyclic compounds
    • C09K2211/1025Heterocyclic compounds characterised by ligands
    • C09K2211/1044Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
    • C09K2211/1051Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms with sulfur
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
    • C09K2211/1018Heterocyclic compounds
    • C09K2211/1025Heterocyclic compounds characterised by ligands
    • C09K2211/1059Heterocyclic compounds characterised by ligands containing three nitrogen atoms as heteroatoms
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10Non-macromolecular compounds
    • C09K2211/1018Heterocyclic compounds
    • C09K2211/1025Heterocyclic compounds characterised by ligands
    • C09K2211/1088Heterocyclic compounds characterised by ligands containing oxygen as the only heteroatom

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The present invention relates to a novel heterocyclic compound and an organic light-emitting element including the same, and the heterocyclic compound according to the present invention is a polycyclic compound containing a nitrogen atom and can be used as an organic material for an organic light-emitting element.

Description

Novel heterocyclic compound and organic light-emitting element comprising same
Technical Field
The present invention relates to a novel heterocyclic compound and an organic light-emitting element including the same.
Background
The organic electroluminescent element is one of self-luminous display elements, and has advantages of wide viewing angle, excellent contrast, and fast response speed.
The organic light emitting element has a structure in which an organic thin film is arranged between 2 electrodes. When a voltage is applied to the light-emitting element having such a structure, electrons and holes injected from 2 electrodes are combined in the organic thin film, and quenched and emitted in pairs. The organic thin film may be formed of a single layer or a plurality of layers as required.
The material of the organic thin film may have a light emitting function as needed. For example, as the organic thin film material, a compound which itself can constitute a light-emitting layer alone, or a compound which can function as a host or a dopant of a host-dopant-based light-emitting layer may be used. In addition, as a material of the organic thin film, a compound that can function as hole injection, hole transport, electron blocking, hole blocking, electron transport, electron injection, or the like can be used.
In order to improve the performance, lifetime, or efficiency of an organic light emitting element, development of an organic thin film material is required.
Prior art literature
Patent literature
(patent document 1) U.S. Pat. No. 4,356,429
Disclosure of Invention
The object of the present invention is to provide a heterocyclic compound of a novel structure which can be used as an organic material for an organic light-emitting element.
In addition, the present invention aims to provide an organic light-emitting element comprising the above heterocyclic compound as an organic layer material.
The present invention relates to a novel heterocyclic compound and an organic light-emitting element including the same, and the heterocyclic compound according to the present invention is a polycyclic compound containing nitrogen atoms and can be used as an organic material layer of the organic light-emitting element.
The present invention provides a heterocyclic compound represented by the following chemical formula 1.
[ chemical formula 1]
Figure BDA0002425223510000021
In the above-mentioned chemical formula 1,
R 1 to R 15 At least one of them is-L-Ar, the remainder are each independently hydrogen, deuterium, cyano, C1-C60 alkyl, C2-C60 alkenyl, C2-C60 alkynyl, C3-C60 cycloalkyl, C2-C60 heterocycloalkyl, C6-C60 aryl, C2-C60 heteroaryl, -SiR a R b R c 、-P(=O)R a R b or-NR a R b
R a 、R b And R is c Each independently is hydrogen, deuterium, C1-C60 alkyl, C3-C60 cycloalkyl, C6-C60 aryl or C2-C60 heteroaryl;
l is a single bond, C6-C60 arylene or C2-C60 heteroarylene;
ar is C6-C60 aryl or C2-C60 heteroaryl;
r is as described above 1 To R 15 Alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl, arylene and heteroarylene of L, aryl and heteroaryl of ArHeteroaryl groups may be selected from C1-C60 alkyl, halo, cyano, C3-C60 cycloalkyl, C1-C60 alkoxy, C6-C60 aryl, C6-C60 aryloxy, C6-C60 arylC 1-C60 alkyl, C1-C60 alkylC 6-C60 aryl, C2-C60 heteroaryl, -SiR d R e R f 、-NR g R h More than one of nitro and hydroxy is further substituted;
R d 、R e and R is f Each independently is C1-C60 alkyl or C6-C60 aryl;
R g and R is h Each independently is hydrogen, C1-C60 alkyl or C6-C60 aryl;
the heteroarylene, heteroaryl and heterocycloalkyl groups described above contain one or more heteroatoms selected from N, O, S and Se.
In addition, the present invention provides an organic light emitting element, comprising: an anode, a cathode, and an organic layer having 1 or more layers between the anode and the cathode, wherein 1 or more layers of the organic layer contain the heterocyclic compound of chemical formula 1.
The heterocyclic compound according to the present invention is a novel nitrogen atom-containing polycyclic compound composed of a 1-phenyl-benzimidazole skeleton and a carbazole skeleton, wherein the No. 9 nitrogen of the carbazole skeleton is bonded to the No. 2 carbon of the 1-phenyl-benzimidazole skeleton, and the No. 1 carbon of the carbazole skeleton is bonded to the carbon ortho to the phenyl group substituted at the No. 1 position of the 1-phenyl-benzimidazole skeleton, and can be used as an organic material layer of an organic light-emitting element. The heterocyclic compound can play a role of a light-emitting material, a hole-injecting material, a hole-transporting material, a light-emitting material, an electron-transporting material, an electron-injecting material, and the like in an organic light-emitting element.
In the case where the heterocyclic compound according to the present invention is contained in a light-emitting layer of an organic light-emitting element as a host material, in particular, as a phosphorescent host material, light-emitting efficiency, electric power efficiency
Figure BDA0002425223510000031
Excellent quantum efficiency and element lifetime, and can display proper color coordinates.
The heterocyclic compound according to the present invention has excellent electron mobility, improves the current characteristics of the element, strengthens the driving voltage, and thus induces an increase in the power utilization coefficient, thereby enabling the manufacture of an organic light-emitting element having improved power consumption, and can prevent the phenomenon of red shift at PL wavelength due to spatial bit blocking on the structure, thereby enabling realization of suitable color reproducibility.
Detailed Description
The present invention will be described in detail below, and technical and scientific terms used herein have the meaning commonly understood by one of ordinary skill in the art to which the invention belongs unless otherwise defined, and descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted from the following description.
In the present specification, the "alkyl", "alkoxy" and other substituents containing an "alkyl" moiety are all included in a straight-chain or branched form.
In the present specification, the alkyl group contains a straight chain or branched chain having 1 to 60 carbon atoms, and may be further substituted with other substituents. The number of carbon atoms of the alkyl group may be 1 to 60, specifically 1 to 40, more specifically 1 to 20.
In the present specification, an alkenyl group contains a straight chain or branched chain having 2 to 60 carbon atoms, and may be further substituted with other substituents. The alkenyl group may have a carbon number of 2 to 60, specifically 2 to 40, more specifically 2 to 20.
In the present specification, an alkynyl group includes a straight chain or branched chain having 2 to 60 carbon atoms, and may be further substituted with other substituents. The number of carbon atoms of the alkynyl group may be 2 to 60, specifically may be 2 to 40, and more specifically may be 2 to 20.
In the present specification, cycloalkyl groups include a single ring or multiple rings having 3 to 60 carbon atoms, and may be further substituted with other substituents. Herein, polycyclic refers to a group in which the cycloalkyl group is directly linked or fused to another cyclic group. The other cyclic group may be a cycloalkyl group, or may be other kinds of cyclic groups, such as a heterocycloalkyl group, an aryl group, a heterocycle, or the like. The number of carbon atoms of the cycloalkyl group may be 3 to 60, specifically 3 to 40, more specifically 5 to 20.
In this specification, the heterocycloalkyl group contains at least one selected from N, O, S and Se as a hetero atom, and contains a single ring or multiple rings of 2 to 60 carbon atoms, and may be further substituted with other substituents. Here, polycyclic means a group in which a heterocycloalkyl group is directly connected or condensed with other cyclic groups. The other cyclic group may be a heterocycloalkyl group, or may be another cyclic group such as a cycloalkyl group, an aryl group, a heterocycle, or the like. The number of carbon atoms of the heterocycloalkyl group may be 2 to 60, specifically 2 to 40, more specifically 3 to 20.
In the present specification, an aryl group is an organic radical derived from an aromatic hydrocarbon by removing one hydrogen, and includes a single ring or multiple rings of 6 to 60 carbon atoms, and may be further substituted with other substituents. Herein, polycyclic refers to a group in which the aryl group is directly linked or fused to other cyclic groups. The other cyclic group may be an aryl group, or may be other kinds of cyclic groups such as cycloalkyl, heterocycloalkyl, heterocycle, and the like. The number of carbon atoms of the aryl group may be 6 to 60, specifically may be 6 to 40, and more specifically may be 6 to 25. Specific examples of the aryl group include phenyl, biphenyl, triphenyl, naphthyl, anthracenyl, and the like,
Figure BDA0002425223510000041
A group, phenanthryl group, perylene group, fluoranthenyl group, triphenylene group, phenanyl group, pyrenyl group, tetracenyl group, pentacenyl group, fluorenyl group, indenyl group, acenaphthylenyl group, fluorenyl group, etc. or condensed rings thereof, but is not limited thereto.
In the present specification, "arylene" means a 2-valent organic radical derived by removing one hydrogen in the above aryl group, following the definition of the above aryl group.
In this specification, the heterocyclic group contains at least one selected from N, O, S and Se as a hetero atom, and contains a single ring or multiple rings of 2 to 60 carbon atoms, and may be further substituted with other substituents. Heteroaryl groups are included within the scope of heterocyclyl groups and are heteroaromatic ring groups. Here, polycyclic means heteroAnd a group in which the cyclic group is directly connected or condensed with other cyclic groups. The other cyclic group may be a heterocyclic group, or may be other kinds of cyclic groups, such as cycloalkyl, heterocycloalkyl, aryl, and the like. The number of carbon atoms of the heterocyclic group may be 2 to 60, specifically 2 to 40, more specifically 3 to 25. Specific examples of the heterocyclic group include pyridyl, pyrrolyl, pyrimidinyl, pyridazinyl, furyl, thienyl, imidazolyl, pyrazolyl, and the like,
Figure BDA0002425223510000051
Azolyl, iso->
Figure BDA0002425223510000052
Oxazolyl, thiazolyl, isothiazolyl, triazolyl, furazanyl,/-yl>
Figure BDA0002425223510000055
Diazolyl, thiadiazolyl, dithiazolyl, tetrazolyl, pyranyl, thiopyranyl, diazinyl,/i>
Figure BDA0002425223510000054
Oxazinyl, thiazinyl, di +.>
Figure BDA0002425223510000053
Alkenyl, triazinyl, tetrazinyl, quinolinyl, isoquinolinyl, quinazolinyl, isoquinazolinyl, naphthyridinyl, acridinyl, phenanthridinyl, imidazopyridinyl, naphthyridinyl, triazaindene, indolyl, indolizinyl, benzothiazolyl, benzo->
Figure BDA0002425223510000056
An oxazolyl group, a benzimidazolyl group, a benzothienyl group, a benzofuranyl group, a dibenzothiophenyl group, a dibenzofuranyl group, a carbazolyl group, a benzocarbazolyl group, a phenazinyl group, or the like, or a condensed ring thereof, but is not limited thereto.
In the present specification, "heteroaryl" means an aryl group containing at least one hetero atom selected from N, O, S and Se as an aromatic ring skeleton atom, and the remaining aromatic ring skeleton atoms are carbonIs a 5 to 6 membered monocyclic heteroaryl, and polycyclic heteroaryl fused to more than one benzene ring, which may be partially saturated. In addition, heteroaryl groups in the present invention also include more than one heteroaryl group in a singly-linked form. As specific examples, it contains furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, and isozyl
Figure BDA0002425223510000059
Azolyl, (-) -and (II) radicals>
Figure BDA00024252235100000510
Monocyclic heteroaryl groups such as oxazolyl, triazinyl, pyridyl, pyrazinyl, pyrimidinyl, and pyridazinyl; benzofuranyl, benzothienyl, isobenzofuranyl, benzimidazolyl, benzothiazolyl, benzisothiazolyl, and benzisothiazolyl>
Figure BDA0002425223510000058
Azolyl, benzo->
Figure BDA0002425223510000057
Polycyclic heteroaryl groups such as an oxazolyl group, an isoindolyl group, an indolyl group, an indazolyl group, a quinolinyl group, an isoquinolinyl group, a dibenzofuranyl group, a dibenzothienyl group, a carbazolyl group, and a benzocarbazolyl group, but the present invention is not limited thereto.
In the present specification, "heteroarylene" means a 2-valent organic radical derived by removing one hydrogen in the above heteroaryl group, following the definition of the above heteroaryl group.
The present invention relates to a novel heterocyclic compound and an organic light-emitting device including the same, and more particularly, to a novel nitrogen atom-containing polycyclic compound having a novel structure in which a 1-phenyl-benzimidazole skeleton and a carbazole skeleton are combined, and a No. 9 nitrogen of the carbazole skeleton is bonded to a No. 2 carbon of the 1-phenyl-benzimidazole skeleton, and a No. 1 carbon of the carbazole skeleton is bonded to a carbon ortho to a phenyl group substituted at a No. 1 position of the 1-phenyl-benzimidazole skeleton, and an organic light-emitting device including the same.
The heterocyclic compound according to the present invention may be represented by the following chemical formula 1:
[ chemical formula 1]
Figure BDA0002425223510000061
In the above-mentioned chemical formula 1,
R 1 to R 15 At least one of them is-L-Ar, the remainder are each independently hydrogen, deuterium, cyano, C1-C60 alkyl, C2-C60 alkenyl, C2-C60 alkynyl, C3-C60 cycloalkyl, C2-C60 heterocycloalkyl, C6-C60 aryl, C2-C60 heteroaryl, -SiR a R b R c 、-P(=O)R a R b or-NR a R b
R a 、R b And R is c Each independently is hydrogen, deuterium, C1-C60 alkyl, C3-C60 cycloalkyl, C6-C60 aryl or C2-C60 heteroaryl;
l is a single bond, C6-C60 arylene or C2-C60 heteroarylene;
ar is C6-C60 aryl or C2-C60 heteroaryl;
r is as described above 1 To R 15 The alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl groups, arylene and heteroarylene groups of L, aryl and heteroaryl groups of Ar may be selected from C1-C60 alkyl, halo C1-C60 alkyl, halogen, cyano, C3-C60 cycloalkyl, C1-C60 alkoxy, C6-C60 aryl, C6-C60 aryloxy, C6-C60 arylC 1-C60 alkyl, C1-C60 alkylC 6-C60 aryl, C2-C60 heteroaryl, -SiR d R e R f 、-NR g R h More than one of nitro and hydroxy is further substituted;
R d 、R e and R is f Each independently is C1-C60 alkyl or C6-C60 aryl;
R g and R is h Each independently is hydrogen, C1-C60 alkyl or C6-C60 aryl;
the heteroarylene, heteroaryl and heterocycloalkyl groups described above contain one or more heteroatoms selected from N, O, S and Se.
Specifically, the heterocyclic compound of the above chemical formula 1 is thermally stable due to the introduction of a specific substituent and a core structure having a morphology in which three nitrogen atoms are bonded with a carbon atom as a center, and can exhibit maximized electron mobility.
The heterocyclic compound of chemical formula 1 has an advantage that it can exhibit phosphorescence characteristics based on the structural characteristics, and can be used as an organic material layer material for an organic light-emitting element, and particularly when used as a light-emitting layer material, it can enhance the driving voltage by increasing the electron mobility and induce an increase in the power utilization coefficient, thereby producing an organic light-emitting element with improved power consumption. In addition, the heterocyclic compound of the above chemical formula 1 can prevent the red shift phenomenon at PL wavelength caused by steric hindrance in the structure, and thus can achieve suitable color reproducibility.
In one embodiment, the heterocyclic compound may be represented by the following chemical formula 2:
[ chemical formula 2]
Figure BDA0002425223510000071
In the above-mentioned chemical formula 2,
R 11 is-L 1 -Ar 1 ;R 12 is-L 2 -Ar 2 ;R 13 is-L 3 -Ar 3 ;R 14 is-L 4 -Ar 4
L 1 、L 2 、L 3 And L 4 Each independently is a single bond, a C6-C60 arylene group, or a C2-C60 heteroarylene group;
Ar 1 、Ar 2 、Ar 3 and Ar is a group 4 Each independently is a C6-C60 aryl or C2-C60 heteroaryl group;
R 21 to R 24 Each independently is hydrogen, deuterium, a C6-C60 aryl or a C2-C60 heteroaryl;
a to d are each independently integers of 0 or 1, and satisfy 2.ltoreq.a+b+c+d.ltoreq.4;
r is as described above 21 To R 24 Aryl or heteroaryl, L 1 To L 4 Arylene and heteroarylene of (2), ar 1 To Ar 4 The aryl and heteroaryl groups of (a) may be further substituted with one or more selected from the group consisting of C1-C60 alkyl, C6-C60 aryl, C1-C60 alkyl, C6-C60 aryl and C2-C60 heteroaryl.
In the heterocyclic compound, the a+b+c+d may be 2 in terms of achieving excellent light-emitting efficiency and improved driving life.
As an example, a is 1, b is 0, c is 0, and d may be 1.
As an example, a is 1, b is 0, c is 1, and d may be 0.
As an example, a is 0, b is 1, c is 1, and d may be 0.
As an example, a is 0, b is 1, c is 0, and d may be 1.
In one embodiment, the heterocyclic compound may be represented by any one of the following chemical formulas 3 to 6:
[ chemical formula 3]
Figure BDA0002425223510000081
[ chemical formula 4]
Figure BDA0002425223510000091
[ chemical formula 5]
Figure BDA0002425223510000092
[ chemical formula 6]
Figure BDA0002425223510000093
In the above-mentioned chemical formulas 3 to 6,
L 1 、L 2 、L 3 and L 4 Each independently is a single bond, a C6-C30 arylene group, or a C2-C30 heteroarylene group;
Ar 1 、Ar 2 、Ar 3 and Ar is a group 4 Each independently is a C6-C30 aryl or C2-C30 heteroaryl group;
R 21 to R 24 Each independently is hydrogen, deuterium, a C6-C30 aryl or a C2-C30 heteroaryl;
r is as described above 21 To R 24 Aryl or heteroaryl, L 1 To L 4 Arylene and heteroarylene of (2), ar 1 To Ar 4 The aryl and heteroaryl groups of (a) may be further substituted with one or more selected from the group consisting of C1-C30 alkyl, C6-C30 aryl, C1-C30 alkyl, C6-C30 aryl and C2-C30 heteroaryl.
In one embodiment, L is as described above 1 、L 2 、L 3 And L 4 Each independently is a single bond or a C6-C30 arylene group, L 1 To L 4 May be further substituted with one or more selected from the group consisting of C1-C30 alkyl, C6-C30 aryl, C1-C30 alkyl-C6-C30 aryl, and C2-C30 heteroaryl; ar (Ar) 1 、Ar 2 、Ar 3 And Ar is a group 4 Each independently may be selected from the following structures, but is not limited thereto:
Figure BDA0002425223510000101
in the above-mentioned,
X 1 is NR (NR) 31 O or S;
Y 1 is CR (CR) 32 R 33 O or S;
R 31 is a C6-C30 aryl or C2-C30 heteroaryl group;
R 32 and R is 33 Each independently is a C1-C30 alkyl, C6-C30 aryl, or C2-C30 heteroaryl group;
r ', R ' and R ' are each independently of the other hydrogen, C6-C30 aryl or C2-C30 heteroaryl;
the aryl groups of R ', R ' and R ' described above may be further substituted with C1-C30 alkyl groups.
In one embodiment, L is as described above 1 、L 2 、L 3 And L 4 Each independently isSingle bond or C6-C20 arylene group, above L 1 To L 4 The arylene group of (a) may be further substituted with one or more selected from the group consisting of C6-C20 aryl, C1-C20 alkyl C6-C20 aryl, and C2-C20 heteroaryl.
In one embodiment, L is as described above 1 、L 2 、L 3 And L 4 Each independently may be a single bond or selected from the following structures, but is not limited thereto:
Figure BDA0002425223510000111
in the above-mentioned,
R L1 、R L2 and R is L3 Each independently is hydrogen, C6-C30 aryl, C1-C30 alkyl C6-C30 aryl, and C2-C30 heteroaryl.
In one embodiment, the heterocyclic compound may be selected from the following structures, but is not limited thereto.
Figure BDA0002425223510000121
Figure BDA0002425223510000131
Figure BDA0002425223510000141
Figure BDA0002425223510000151
Figure BDA0002425223510000161
Figure BDA0002425223510000171
Figure BDA0002425223510000181
The heterocyclic compound according to an embodiment of the present invention may be used in an organic layer of an organic light-emitting element based on its structural specificity, and specifically, may be used as a host compound in a light-emitting layer in the above organic layer. More specifically, the heterocyclic compound according to an embodiment of the present invention may be used as a phosphorescent host compound in the light-emitting layer in the organic layer described above.
The above-mentioned compound can be produced based on the production examples described below. In the production examples described below, representative examples are described, but substituents may be added or removed as necessary, and the positions of the substituents may be changed. The starting materials, the reaction conditions, and the like may be changed based on techniques in this technical field. Regarding the kind or position of the substituents at the remaining positions, which are changed as needed, those skilled in the art can implement them by using techniques known in the art.
In addition, the present invention provides an organic light-emitting element comprising the heterocyclic compound of the above chemical formula 1.
Specifically, the organic light emitting element according to the present invention includes: an anode, a cathode, and an organic layer having 1 or more layers between the anode and the cathode, wherein 1 or more layers of the organic layer contain the heterocyclic compound of chemical formula 1.
However, the structure of an organic light emitting element known in the art can also be applied to the present invention. The scope of the present invention is not limited to such a laminated structure, and other layers other than the light-emitting layer may be omitted or other functional layers may be further added as needed.
The organic light emitting element according to the present invention may be manufactured using materials and methods known in the art, except that 1 or more of the organic layers contains the heterocyclic compound of chemical formula 1 described above.
The heterocyclic compound of chemical formula 1 may constitute 1 or more layers among the organic layers of the organic light-emitting element alone. However, the organic layer may be formed by mixing other substances as needed.
The heterocyclic compound of chemical formula 1 can be used as a hole injecting material, a hole transporting material, a light emitting material, an electron transporting material, an electron injecting material, or the like in an organic light emitting element. The heterocyclic compound of chemical formula 1 can be used as a material for at least one of a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. As an example, the heterocyclic compound of the above chemical formula 1 may be used as an electron injection and transport layer material of an organic light emitting element. As another example, the heterocyclic compound of the above chemical formula 1 may be used as a light-emitting layer material of an organic light-emitting element. As another example, the heterocyclic compound of the above chemical formula 1 may be used as a host material of a phosphorescent light-emitting layer of an organic light-emitting element.
In the organic light-emitting element according to the present invention, materials other than the heterocyclic compound of the above chemical formula 1 are exemplified below, but these are only examples, and the scope of the present invention is not limited thereto, and materials known in the art may be substituted for them.
As the anode material, a material having a relatively large work function can be used, and as a specific example, metals such as vanadium, chromium, copper, zinc, gold, and the like, or alloys thereof can be used; metal oxides such as zinc oxide, indium Tin Oxide (ITO), and Indium Zinc Oxide (IZO); znO of Al or SnO 2 A combination of metals such as Sb and the like and oxides; poly (3-methylthiophene), poly [3,4- (ethylene-1, 2-dioxy) thiophene]Conductive polymers such as (PEDT), polypyrrole and polyaniline, etc., but not limited thereto. In addition, the anode layer may be formed of only one type of the above materials, or may be formed of a mixture of a plurality of materials, and a multilayer structure composed of a plurality of layers of the same composition or different compositions may be formed.
As the cathode material, a material having a relatively small work function can be used, and as a specific example, magnesium, calcium, sodium, potassium, titanium, indium, and the like can be used,Metals such as yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, or alloys thereof; liF/Al or LiO 2 Multilayer structure such as Al.
As the hole injecting material, a known hole injecting material can be used, and for example, phthalocyanine compounds such as CuPc (copper phthalocyanine ) disclosed in U.S. Pat. No. 4,356,429, or star burst type amine derivatives described in document [ Advanced Material,6, p.677 (1994) ] such as TCTA (tris (4-carbazolyl-9-ylphenyl) amine, tris (4-carbazolyl-9-ylphenyl) amine), m-MTDATA (4, 4',4″ -tris (3-Methylphenylphenylamino) triphenylamine, 4',4″ -tris (3-methylphenyl amino) triphenylamine), m-mtmtb (1, 3,5-tris [4- (3-methylphenyl amino) phenyl ] benzenzenzenzene, 1,3,5-tris [4- (3-methylphenyl amino) phenyl ] benzene), and high-solubility as a polymer such as Polyaniline/Polyaniline, or polyether sulfonic acid (3, dapsa); PSS (Poly (3, 4-ethylenedioxythiophene) -Poly (styrnesulfonate), poly (3, 4-ethylenedioxythiophene) -Poly (styrenesulfonate)), pani/CSA (Polyaniline/Camphor sulfonic acid ) or PANI/PSS (Polyaniline/Poly (4-styrenesulfonate)), and the like.
As the hole transporting material, pyrazoline derivatives, arylamine derivatives, stilbene derivatives, triphenyldiamine derivatives, and the like can be used, and low-molecular or high-molecular materials can also be used. As specific examples, NPB (N, N '-Bis (naphthalen-1-yl) -N, N' -Bis (phenyl) -benzodine, N, N '-Bis (naphthalen-1-yl) -N, N' -Bis (phenyl) -benzidine), NPD (N, N '-Bis (naphthalen-1-yl) -N, N' -Bis (phenyl) -2,2 '-dimethyllbenzidine, N, N' -Bis (naphthalen-1-yl) -N, N '-Bis (phenyl) -2,2' -dimethylbenzidine), mCP (1, 3-Bis (N-carbazolyl) benzene,1, 3-Bis (N-carbazolyl) benzene), TPD (N, N '-Bis (3-methylphenyl) -N, N' -diphenylbenzidine, N, N '-Bis (3-methylphenyl) -N, N' -diphenylbenzidine), TTB (N, N, N ', N' -tetrakis (4-methylphenyl) - (1, 1 '-biphenyl) -4,4-diamine, N, N, N', N '-tetrakis (4-methylphenyl) - (1, 1' -biphenyl) -4, 4-diamine), TTP (N1, N4-diphenyl-N1, N4-dim-tolylzene-1, 4-diamine, N1, N4-di-phenyl-N1, N4-di-m-tolylbenzene-1, 4-diamine), ETPD (N, N '-bis (4-methylphenyl) -N, N' -bis (4-ethylphenyl) - [1,1'- (3, 3' -dimethyl) biphenyl ]]-4,4' -diamine, N ' -bis (4-methylphenyl) -N, N ' -bis (4-ethylphenyl) - [1,1' - (3, 3' -dimethyl) biphenyl]-4,4' -diamine), VNPB (N4, N4' -di (naphthalen-1-yl) -N4, N4' -bis (4-vinylphenyl) biphen-4, 4' -diamine, N4, N4' -di (naphthalen-1-yl) -N4, N4' -bis (4-vinylphenyl) biphenyl-4,4' -diamine), ONPB (N4, N4' -bis (4- (6- ((3-ethyloxy-3-yl) method) phenyl) -N4, N4' -diphenylbiphenyl-4,4' -diamine, N4, low molecular hole transporting substances such as N4' -bis (4- (6- ((3-ethyloxetan-3-yl) methoxy) hexyl) phenyl) -N4, N4' -diphenyl biphenyl-4,4' -diamine), OTPD (N4, N4' -bis (4- (6- ((3-ethyloxetan-3-yl) methoxy) phenyl) -N4, N4' -diphenylbiphenyl-4,4' -diamine, N4' -bis (4- (6- ((3-ethyloxetan-3-yl) methoxy) hexyl) phenyl) -N4, N4' -diphenyl biphenyl-4,4' -diamine)), and the like; and PVK (poly-N-vinylcarbazoles), poly (N-vinylcarbazole), polyaniline, (phenylmethyl) polysilanes
Figure BDA0002425223510000211
And a polymer hole transporting substance.
As the electron transport material, use can be made of
Figure BDA0002425223510000212
The metal complex of the diazole derivative, anthraquinone dimethane and its derivative, benzoquinone and its derivative, naphthoquinone and its derivative, anthraquinone and its derivative, tetraquinone dimethane and its derivative, fluorenone derivative, diphenyldicyanoethylene and its derivative, diphenoquinone derivative, 8-hydroxyquinoline and its derivative, etc. may be used, and not only a low molecular substance but also a high molecular substance may be used. As a specific example, TSPO1 (diphenyl [4- (triphenylsilyl) phenyl) can be used]Phosphine oxide, diphenyl [4- (triphenylsilyl) phenyl ]]Phosphine oxide), TPBI (1, 3,5-tris (N-phenylbenzimidzol-2-yl) benzene,1,3, 5-tris (N-phenylbenzimidazol-2-yl) benzene); alq 3 (tris (8-hydroxyquinone) aluminum, tris (8-hydroxy)Quinoline) aluminum); BCP (2, 9-dimethyl-4,7-diphenyl-1, 10-phenanthrine, 2,9-dimethyl-4,7-diphenyl-1, 10-phenanthroline); PBD (2- (4-biphenyl) -5- (4-tert-butyl-phenyl) -1,3, 4-oxadifole, 2- (4-biphenyl) -5- (4-tert-butyl-phenyl) -1,3, 4-/-for->
Figure BDA0002425223510000222
Diazoles), TAZ (3- (4-biphenyl) -4-phenyl-5- (4-tert-butyl-phenyl) -1,2,4-triazo le,3- (4-biphenyl) -4-phenyl-5- (4-tert-butyl-phenyl) -1,2, 4-triazole), OXD-7 (1, 3-bis [2- (4-tert-butyl-phenyl) -1,3, 4-oxazo-5-yl)]Benzene,1, 3-bis [2- (4-tert-butylphenyl) -1,3,4->
Figure BDA0002425223510000221
Diazol-5-yl]Benzene) and the like; tris (phenylquinoxaline) (tris (phenylquinoxaline), TPQ); tmPyPB (3, 3'- [5' - [3- (3-Pyridinyl) phenyl)][1,1’:3’,1”-terphenyl]-3,3”-diyl]bispyridine, 3'- [5' - [3- (3-pyridyl) phenyl ]][1,1':3',1 "-terphenyl group]-3, 3' -diyl]Bipyridine) and the like, but is not limited thereto.
As the electron injection material, LIF or Liq (lithium 8-hydroxyquinoline) is typically used in this field, for example, but not limited thereto.
As the light-emitting material, a red, green, or blue light-emitting material may be used, and if necessary, 2 or more kinds of light-emitting materials may be mixed and used. As the light-emitting material, a fluorescent material or a phosphorescent material may be used. As the light-emitting material, a material that emits light by combining holes and electrons injected from the anode and the cathode, respectively, may be used alone, but a material in which a host material and a dopant material participate in light emission at the same time may also be used.
When the heterocyclic compound of chemical formula 1 is used as a host material for a phosphorescent light-emitting layer of an organic light-emitting element, a phosphorescent dopant is used together, whereby a high-luminance color can be obtained with higher efficiency. In this case, the dopant to be used is not limited, and known dopants may be selected and used as needed. The phosphorescent dopant is a compound capable of emitting light from triplet excitons, and is not particularly limited as long as light is emitted from triplet excitons. As a specific example, a metal complex containing one or more metals selected from Ir, ru, pd, pt, os, re and the like may be used, and a porphyrin metal complex or an orthometalated metal complex may be used.
The porphyrin metal complex may specifically be a porphyrin platinum complex.
The orthometalated metal complex may be a compound containing 2-phenylpyridine (2-phenyl pyridine, ppy) derivative, 7, 8-benzoquinoline derivative, 2- (2-thienyl) pyridine (2- (2-thienyl) pyridine, tp) derivative, 2- (1-naphthyl) pyridine (2- (1-naphthyl) pyridine, npy) derivative, 2-phenylquinoline (2-phenyl quinoline, pq) derivative, or the like as a ligand. In this case, the derivatives thereof may have a substituent as required. As the auxiliary ligand, there may be further provided a ligand other than the above-mentioned ligand, such as acetylacetone (acac), picric acid (picric acid), and the like. Specific examples thereof include iridium bithiophene acetylacetonate (bisthienylpyridineacetylacetonate Iridium) and bis (2-benzo [ b ]]Thiophene-2-ylpyridine) (acetylacetonate) iridium (III) (bis (2-benzob)]thiophen-2-yl-pyridine)(acetylacetonato)iridium(III),Ir(btp) 2 (acac)), bis (2-phenylbenzothiazole) (acetylacetonate) iridium (III), ir (bt) 2 (acac)), bis (1-phenylisoquinoline) (acetylacetonate) Iridium (III), iridium (bis (1-phenylisoquinoline) (acetoacetonato) Iridium (III), ir (piq) 2 (acac)), tris (1-phenylisoquinoline) iridium (III), ir (piq) 3 ) Tris (2-phenylpyridine) iridium (III), ir (ppy) 3 ) Tris (2-biphenylpyridine) iridium, tris (3-biphenylpyridine) iridium, tris (4-biphenylpyridine) iridium, and the like, but are not limited thereto.
The present invention will be described in more detail with reference to examples, which are merely illustrative of the present invention and do not limit the scope of the present invention.
Production example 1 production of Compound A1
Figure BDA0002425223510000241
Production of Compound a-1
To 420mL of DMF was added 10g (84.65 mmol) of benzimidazole, 22.2g (93.11 mmol) of 2-chloro-iodobenzene, 2.42g (12.70 mmol) of CuI (Copper iodide), 23.40g (169.30 mmol) of K 2 CO 3 (potassium carbonate ), 1.12g (4.23 mmol) of 18-crown-6 (18-crown-6-ether) were then refluxed at 150℃under a nitrogen atmosphere. When the reaction was completed, after filtration using celite (celite) and magnesium silicate carrier (florisil), washing with MC was performed. Column chromatography purification using MC and Hex gave 17.2g (89%) of the title compound a-1.
Production of Compound a-2
After dissolving 10g (43.73 mmol) of compound a-1 in 220mL of THF, the temperature was lowered to-78 ℃, 30mL (48.10 mmol) of n-butyllithium (in 1.6M hexane solution) was added, and stirred at the same temperature for 30 minutes. After slowly dropping an iodine (iodine) solution (12.21 g (48.10 mmol) of iodine was dissolved in 200mL of THF), the temperature was raised to room temperature with stirring, and stirred at room temperature for 24 hours. When the reaction was completed, the reaction was stopped with a sodium thiosulfate (sodium thiosulfate) solution, filtered, and washed with MC. Column chromatography purification was performed using MC and Hex, thereby obtaining 11.6g (75%) of the target compound a-2.
Production of Compound a-3
5g (14.10 mmol) of compound a-2, 3.13g (15.51 mmol) of 1-chloro-9H-carbazole, 0.40g (2.12 mmol) of CuI (Copper (I) iodide) and 3.90g (28.20 mmol) of K are added to 420mL of DMF 2 CO 3 (potassium carbonate), 0.19g (0.71 mmol) of 18-crown-6 (18-crown-6-ether) and then refluxed at 150℃under a nitrogen atmosphere. When the reaction is completed, diatomaceous earth (cel) is usedite) and magnesium silicate support (florisil) were filtered and washed with MC. Column chromatography purification was performed using MC and Hex, thereby obtaining 4.1g (68%) of the target compound a-3.
Production of Compound a-4
After dissolving 5g (11.67 mmol) of compound a-3 in 60mL of toluene, 3.85g (15.18 mmol) of bis (pinacolato) diboron (bis (pinacolato) diboron), 1.60g (1.75 mmol) Pd were added 2 (dba) 3 (tris (dibenzylideneacetone) dipalladium (0), tris (dibenzylideneacetone) dipalladium (0)), 0.463g (35.02 mmol) of K 2 CO 3 (potassium carbonate), 0.24g (0.58 mmol) of S-Phos (2-Dicyclohexylphosphino-2 ',6' -dimethoxybiphenyl), and refluxed at 130℃for 24 hours. When the reaction is complete, EA and H are used 2 After O extraction, the solvent was removed and purified by Hex and EA column chromatography to give 2.34g (56%) of the target compound a-4.
Production of Compound A1
5g (13.99 mmol) of Compound a-4, 2.99g (16.79 mmol) of N-bromosuccinimide, 3g (100 wt%) of SiO were added to 70mL of chloroform 2 After being wrapped with silver foil, the mixture was stirred at room temperature. When the reaction is completed, MC and H are used 2 After O extraction, the solvent was removed and purified by Hex and EA column chromatography to obtain 1.83g (30%) of the target compound A1.
EXAMPLES 1 to 29 production of Compounds 1-1 to 1-29
Figure BDA0002425223510000251
Production of Compound A1-1
Suzuki coupling with 3g (6.88 mmol) of Compound A1 was carried out as a conventional process using R 13 The target compound A1-1 having the structure shown in Table 1 below was obtained.
Production of Compounds A1-2
To 10mL of chloroform were added compound A1-1 (1 eq.) and Bromine (1 eq.) and the mixture was wrapped with silver foil and stirred at room temperature. When the reaction was completed, after extraction using a sodium thiosulfate solution (sodium thiosulfate solution) and MC, the solvent was removed, and purification was performed by recrystallization from Hex and EA, thereby obtaining the objective compound A1-2.
Production of Compound 1
Using the compound A1-2, the objective compound 1 having the structure of table 1 below was obtained by suzuki coupling as a conventional method.
TABLE 1
Figure BDA0002425223510000261
Figure BDA0002425223510000271
Figure BDA0002425223510000281
Figure BDA0002425223510000291
Figure BDA0002425223510000301
Figure BDA0002425223510000311
Production example 2 production of Compound A2
Figure BDA0002425223510000312
To 70mL of methylene chloride was added 5g (13.99 mmol) of compound a-4, 2.99g (16.79 mmol) of N-bromosuccinimide, 3g (100 wt%) of SiO 2 After being wrapped with silver foil, the mixture was stirred at room temperature. When the reaction is completed, MC and H are used 2 After O extraction, the solvent was removed and purified by Hex and EA column chromatography to give 2.08g (34%) of the target compound A2.
EXAMPLES 30 to 58 preparation of Compounds 2-1 to 2-29
Figure BDA0002425223510000313
Production of Compound A2-1
Suzuki coupling reaction was carried out as a conventional method using 3g (6.88 mmol) of Compound A2 with R 10 The target compound A2-1 having the structure shown in Table 2 below was obtained.
Production of Compound A2-2
Compound A2-1 (1 eq.) and Bromine (1 eq.) were added to 10mL of chloroform, and the mixture was wrapped with silver foil and stirred at room temperature. When the reaction was completed, after extraction using a sodium thiosulfate solution (sodium thiosulfate solution) and MC, the solvent was removed, and purification was performed by recrystallization from Hex and EA, thereby obtaining the objective compound A2-2.
Production of Compound 2
Using the compound A2-2, the objective compound 2 having the structure of table 2 below was obtained by suzuki coupling as a conventional method.
TABLE 2
Figure BDA0002425223510000321
Figure BDA0002425223510000331
Figure BDA0002425223510000341
Figure BDA0002425223510000351
Figure BDA0002425223510000361
Production example 3 production of Compound A3
Figure BDA0002425223510000371
Production of Compound a-5
To 420mL of DMF was added 10g (84.65 mmol) of benzimidazole, 25.0g (93.11 mmol) of 1-chloro-2-iodo-4-methoxybenzene, 2.42g (12.70 mmol) of CuI (Copper (I) iodate), 23.40g (169.30 mmol) of K 2 CO 3 (potassium carbonate), 1.12g (4.23 mmol) of 18-crown-6 (18-crown-6-ether) were then refluxed at 150℃under a nitrogen atmosphere. When the reaction was completed, after filtration using celite (celite) and magnesium silicate carrier (florisil), washing with MC was performed. Purification using MC and Hex column chromatography gave 18.4g (84%) of the title compound a-5.
Production of Compound a-6
After dissolving 10g (38.65 mmol) of compound a-5 in 190mL of THF, the temperature was reduced to-78deg.C, then 27mL (42.52 mmol) of n-butyllithium (in 1.6M hexane) was added and stirred at the same temperature for 30 minutes. After slowly dropping an iodine (iodine) solution (10.79 g (42.52 mmol) of iodine (iodine) was dissolved in 170mL of THF), the temperature was slowly raised to room temperature with stirring, and stirred at room temperature for 24 hours. When the reaction was completed, the reaction was stopped with a sodium thiosulfate (sodium thiosulfate) solution, filtered, and washed with MC. Purification using MC and Hex column chromatography gave 11.3g (76%) of the title compound a-6.
Production of Compound a-7
5g (13.0 mmol) of compound a-6, 2.70g (14.30 mmol) of 1-chloro-9H-carbazole, 0.37g (1.95 mmol) of CuI (Copper (I) iodide) and 3.59g (26.0 mmol) of K are added to 420mL of DMF 2 CO 3 (potassium carbonate), 0.18g (0.65 mmol) of 18-crown-6 (18-crown-6-ether) and then refluxed at 150℃under a nitrogen atmosphere. When the reaction was completed, after filtration using celite (celite) and magnesium silicate carrier (florisil), washing with MC was performed. Purification using MC and Hex column chromatography gave 4.2g (71%) of the title compound a-7.
Production of Compound a-8
After dissolving 5g (0.91 mmol) of compound a-7 in 60mL of toluene, 3.85g (15.18 mmol) of bis (pinacolato) diboron (bis (pinacolato) diboron), 1.60g (1.75 mmol) Pd were added 2 (dba) 3 (tris (dibenzylideneacetone) dipalladium (0), tris (dibenzylideneacetone) dipalladium (0)), 0.463g (35.02 mmol) of K 2 CO 3 (potassium carbonate), 0.24g (0.58 mmol) of S-Phos (2-Dicyclohexylphosphino-2 ',6' -dimethoxybiphenyl), and refluxed at 130℃for 24 hours. When the reaction is complete, EA and H are used 2 After O extraction, the solvent was removed and purified by Hex and EA column chromatography to give 2.20g (52%) of the target compound a-8.
Production of Compound A3
5g (12.91 mmol) of compound a-8, 2.53g (14.20 mmol) of N-bromosuccinimide, 3g (100 wt%) of SiO are added to 70mL of methylene chloride 2 After being wrapped with silver foil, the mixture was stirred at room temperature. When the reaction is completed, MC and H are used 2 After O extraction, the solvent was removed and purified by Hex and EA column chromatography to give 2.47g (41%) of the target compound A3.
EXAMPLES 59 to 87 preparation of Compounds 3-1 to 3-29
Figure BDA0002425223510000391
Production of Compound A3-1
Suzuki coupling with 3g (6.43 mmol) of Compound A3 was carried out as a conventional process using R 10 The target compound A3-1 having the structure shown in Table 3 below was obtained.
Production of Compound A3-2
Compound A3-1 (1 eq.) and boron tribromide (1 eq.) were added to 10mL of methylene chloride, and stirred at room temperature. When the reaction was completed, after extraction with MC, the solvent was removed, and purification was performed by recrystallization from Hex and EA, thereby obtaining the objective compound A3-2.
Production of Compound A3-3
To 10mL of THF were added compound A3-2 (1 eq.), triethylamine (1.2 eq.), 4-dimethylaminopyridine (4- (dimethyllamino) pyridine) (0.1 eq.), and trifluoromethanesulfonic anhydride (Triflic anhydride) (1.1 eq.) and the mixture was stirred at room temperature. When the reaction was completed, extraction was performed using MC, the solvent was removed, and purification was performed by recrystallization from Hex and EA, thereby obtaining the objective compound A3-3.
Production of Compound 3
Using the compound A3-3, the objective compound 3 having the structure of table 3 below was obtained by suzuki coupling as a conventional method.
TABLE 3
Figure BDA0002425223510000401
Figure BDA0002425223510000411
Figure BDA0002425223510000421
Figure BDA0002425223510000431
Figure BDA0002425223510000441
PREPARATION EXAMPLE 4 preparation of Compound A4
Figure BDA0002425223510000442
5g (13.99 mmol) of compound a-8, 2.99g (16.79 mmol) of N-bromosuccinimide, 3g (100 wt%) of SiO are added to 70mL of chloroform 2 After being wrapped with silver foil, the mixture was stirred at room temperature. When the reaction is completed, MC and H are used 2 After O was extracted, the solvent was removed and purified by Hex and EA column chromatography to obtain 1.83g (30%) of the target compound A4.
EXAMPLES 88 to 100 preparation of Compounds 4-1 to 4-13
Figure BDA0002425223510000451
Production of Compound A4-1
Suzuki coupling with 3g (6.88 mmol) of Compound A4 was carried out as a prior art method using R 13 The target compound A4-1 having the structure shown in Table 4 below was obtained.
Production of Compound A4-2
Compound A4-1 (1 eq.) and boron tribromide (1 eq.) were added to 10mL of methylene chloride, and stirred at room temperature. When the reaction was completed, extraction was performed using MC, the solvent was removed, and purification was performed by recrystallization from Hex and EA, thereby obtaining the objective compound A4-2.
Production of Compound A4-3
To 10mL of THF were added compound A4-2 (1 eq.), triethylamine (1.2 eq.), 4-dimethylaminopyridine (4- (dimethyllamino) pyridine) (0.1 eq.), and trifluoromethanesulfonic anhydride (Triflic anhydride) (1.1 eq.) and the mixture was stirred at room temperature. When the reaction was completed, extraction was performed using MC, the solvent was removed, and purification was performed by recrystallization from Hex and EA, thereby obtaining the objective compound A4-3.
Production of Compound 4
Using the compound A4-3, the objective compound 4 having the structure of table 4 below was obtained by suzuki coupling as a conventional method.
TABLE 4
Figure BDA0002425223510000452
Figure BDA0002425223510000461
Figure BDA0002425223510000471
The compounds to be produced in the above examples 1 The H NMR and MS values are shown in Table 5 below.
TABLE 5
Figure BDA0002425223510000481
Figure BDA0002425223510000491
Figure BDA0002425223510000501
Figure BDA0002425223510000511
Figure BDA0002425223510000521
Figure BDA0002425223510000531
Figure BDA0002425223510000541
Figure BDA0002425223510000551
Figure BDA0002425223510000561
Figure BDA0002425223510000571
Figure BDA0002425223510000581
Manufacture and evaluation of organic electronic components
Experimental examples 1-29 Red organic electroluminescent element (phosphorescent host)
An ITO substrate was placed on a substrate holder of a vacuum deposition apparatus, and a 2-TNATA (4, 4' -Tris [2-naphthyl (phenyl) amino ] triphenylamine, 4' -Tris [2-naphthyl (phenyl) amino ] triphenylamine) film was vacuum deposited on an ITO layer (anode) formed on the glass substrate to form a 60nm thick hole injection layer, and then an NPD (4, 4' -bis [ N- (1-napthyl) -Nphenamino ] biphen) film was vacuum deposited at a thickness of 60nm to form a hole transport layer.
Figure BDA0002425223510000582
Next, the compound of the present invention described in Table 6 as a host substance was added to one cell in the vacuum vapor deposition apparatus, and (piq) as a red light-emitting dopant substance was added to the other cell 2 Ir (acac) (bis- (1-phenylisoquinolyl) iridium (III) acetate, bis (1-phenylisoquinolyl) acetylacetonate iridium (III)) and then doped at a weight ratio of 95:5, a light-emitting layer was deposited on the hole transport layer at a thickness of 30 nm.
Figure BDA0002425223510000583
Next, as a hole blocking layer, BAlq (1, 1 '-biphen-4-olato) bis (2-methyl-8-quinolinolato) aluminum, (1, 1' -biphenyl-4-hydroxy) bis (2-methyl-8-hydroxyquinoline) aluminum) was vacuum-deposited at a thickness of 10nm, and as an electron transport layer, alq3 (tris- (8-hydroxyquinoline) aluminum) was vacuum-deposited at a thickness of 40 nm. Then, as an electron injection layer, liF as an alkali metal halide was vapor-deposited at a thickness of 0.2nm, and then Al was vapor-deposited at a thickness of 150nm to form a cathode, thereby producing an organic electroluminescent element.
Figure BDA0002425223510000591
Comparative examples 1 to 3
An organic light-emitting element was produced in the same manner as in experimental example 1 above, except that the following comparative compound a, comparative compound B, or comparative compound C was used instead of the compound of the present invention as the host material of the light-emitting layer.
Figure BDA0002425223510000592
The organic electroluminescent devices manufactured by the experimental examples 1 to 29 and comparative examples 1 to 3 of the present invention were applied with a forward bias direct current voltage, and the Electroluminescent (EL) characteristics were measured by PR-650 of the company Photoesearch, at 2500cd/m 2 The T90 lifetime was measured at the reference luminance by a lifetime measuring apparatus manufactured by McScience corporation, and the measurement results are shown in table 6 below. T90 represents the time taken until the luminance of the light-emitting element becomes 90% with respect to the initial luminance.
TABLE 6
Figure BDA0002425223510000593
Figure BDA0002425223510000601
Figure BDA0002425223510000611
As is clear from table 6, the compounds developed in the present invention have more excellent light emission characteristics than conventional light emitting materials as red light emitting materials, and can reduce driving voltage, induce an increase in power utilization coefficient, and improve power consumption. That is, the compound according to the present invention has an advantage that an OLED having good luminous efficiency and very good driving life of the element can be manufactured as a host material for a light emitting material compared to the existing host material.
Experimental examples 30-63 Green organic electroluminescent element (phosphorescent host)
Transparent electrode ITO film obtained from OLED glass (Sanxing-Kangning) was subjected to ultrasonic washing with trichloroethylene, acetone, ethanol and distilled water in this order, and then stored in isopropanol.
Secondly, arranging the substrate clamp of the vacuum evaporation equipmentAn ITO substrate, and 2-TNATA is added into a pool in a vacuum evaporation device. Then, exhausting is performed until the vacuum degree in the cavity reaches 10 -6 A support, then a current 2-TNATA is applied to the cell, and the ITO substrate is evaporated
Figure BDA0002425223510000613
A hole injection layer of thickness. NPB is added into another pool in the vacuum evaporation equipment, current is applied to the pool to evaporate the pool, and +.>
Figure BDA0002425223510000612
A hole transport layer of thickness.
After the hole injection layer and the hole transport layer were formed in this manner, the light-emitting layer was evaporated thereon as follows. As a main substance, the compounds of the present invention described in Table 7 were used as
Figure BDA0002425223510000614
Vacuum deposition was performed at the same time as the thickness of Ir (ppy) as a green-emitting dopant substance 3 (Tris (2-phenylpyridine) iridium (III), tris (2-phenylpyridine) iridium) was vacuum evaporated by 10% relative to the host material.
Figure BDA0002425223510000621
Subsequently, as a hole blocking layer, BCP (2, 9-dimethyl-4,7-diphenyl-1, 10-phenanthrine, 2,9-dimethyl-4,7-diphenyl-1, 10-phenanthroline) was used as a hole blocking layer
Figure BDA0002425223510000622
Vapor deposition was performed to a thickness of Alq3 as an electron transport layer>
Figure BDA0002425223510000623
Is vapor deposited.
Figure BDA0002425223510000624
Then, as an electron injection layer, liF was used as
Figure BDA0002425223510000625
Is vapor deposited. Then, al is cathodic in +.>
Figure BDA0002425223510000626
Vapor deposition is performed to the thickness of (2) to produce an organic electroluminescent device.
Comparative examples 4 and 5
An organic light-emitting element was produced in the same manner as in experimental example 30 above, except that the following comparative compound a or comparative compound C was used as the host material of the light-emitting layer in place of the compound of the present invention.
Figure BDA0002425223510000627
The driving voltage, efficiency and life of the elements fabricated in examples 30 to 63 and comparative examples 4 to 5 of the present invention were 1000cd/m 2 And the results at 50% efficiency are shown in Table 7 below.
TABLE 7
Figure BDA0002425223510000628
Figure BDA0002425223510000631
Figure BDA0002425223510000641
From the above table 7, it was confirmed that the compounds developed in the present invention as green light emitting materials exhibited similar or superior light emitting characteristics as compared with the conventional light emitting materials. In particular, the driving voltage can be reduced, the induced power utilization coefficient can be increased, and the power consumption can be improved. That is, the compound according to the present invention has an advantage that an OLED having good luminous efficiency and very good driving life of the element can be manufactured as a host material for a light emitting material compared to the existing host material.

Claims (4)

1. A heterocyclic compound represented by any one of the following chemical formulas 3 to 6:
chemical formula 3
Figure FDA0004077394970000011
Chemical formula 4
Figure FDA0004077394970000012
Chemical formula 5
Figure FDA0004077394970000013
Chemical formula 6
Figure FDA0004077394970000014
In the chemical formulas 3 to 6, R 21 To R 24 Each independently is hydrogen;
*-L 1 -Ar 1 、*-L 2 -Ar 2 、*-L 3 -Ar 3 and-L 4 -Ar 4 Each independently selected from the following structures;
Figure FDA0004077394970000021
2. the heterocyclic compound of claim 1, wherein the heterocyclic compound is selected from the following structures:
Figure FDA0004077394970000031
Figure FDA0004077394970000041
Figure FDA0004077394970000051
Figure FDA0004077394970000061
Figure FDA0004077394970000071
Figure FDA0004077394970000081
Figure FDA0004077394970000091
3. an organic light emitting element, comprising: an anode, a cathode, and an organic layer comprising 1 or more layers between the anode and the cathode, wherein 1 or more layers of the organic layer contain the heterocyclic compound according to claim 1 or 2.
4. The organic light-emitting element according to claim 3, wherein the organic layer is at least one layer selected from a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer.
CN202010218466.4A 2020-03-25 2020-03-25 Novel heterocyclic compound and organic light-emitting element comprising same Active CN113444098B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010218466.4A CN113444098B (en) 2020-03-25 2020-03-25 Novel heterocyclic compound and organic light-emitting element comprising same
KR1020200068863A KR102214260B1 (en) 2020-03-25 2020-06-08 Novel heterocyclic compound and organic light emitting device comprising the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010218466.4A CN113444098B (en) 2020-03-25 2020-03-25 Novel heterocyclic compound and organic light-emitting element comprising same

Publications (2)

Publication Number Publication Date
CN113444098A CN113444098A (en) 2021-09-28
CN113444098B true CN113444098B (en) 2023-04-25

Family

ID=74561281

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010218466.4A Active CN113444098B (en) 2020-03-25 2020-03-25 Novel heterocyclic compound and organic light-emitting element comprising same

Country Status (2)

Country Link
KR (1) KR102214260B1 (en)
CN (1) CN113444098B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356429A (en) * 1980-07-17 1982-10-26 Eastman Kodak Company Organic electroluminescent cell
JP4356429B2 (en) 2003-11-10 2009-11-04 ブラザー工業株式会社 ink cartridge
KR101616501B1 (en) * 2013-09-11 2016-04-28 희성소재 (주) Multicyclic compound including nitrogen and organic light emitting device using the same
TWI589673B (en) * 2016-11-03 2017-07-01 元智大學 Bipolar materials and organic light emitting diodes
US10910570B2 (en) * 2017-04-28 2021-02-02 Universal Display Corporation Organic electroluminescent materials and devices

Also Published As

Publication number Publication date
KR102214260B1 (en) 2021-02-10
CN113444098A (en) 2021-09-28

Similar Documents

Publication Publication Date Title
JP7314364B2 (en) Organic electroluminescent compound and organic electroluminescent device containing the same
CN111052428B (en) Organic light-emitting device using heterocyclic compound
CN111094302B (en) Polycyclic compound and organic light emitting device including the same
CN111655706B (en) Compound and organic light emitting device comprising the same
TWI469966B (en) Compound having carbazole ring structure, and organic electroluminescent device
CN113227082B (en) Compound and organic light emitting device using the same
CN110088110B (en) Novel compound and organic light-emitting element comprising same
CN111770919B (en) Compound and organic light emitting device including the same
KR20110015836A (en) Novel organic electroluminescent compounds and organic electroluminescent device using the same
KR20190101281A (en) Organic electroluminescent compound and organic electroluminescent device comprising the same
CN111377905A (en) Organic electroluminescent material and device
CN110800122A (en) Organic electroluminescent device
JP2021093526A (en) Organic electro-luminescent compound and organic electro-luminescent device including the same
KR20200068568A (en) Novel compound and organic light emitting device comprising the same
KR101616501B1 (en) Multicyclic compound including nitrogen and organic light emitting device using the same
KR102173481B1 (en) New organic electroluminescent compound and organic electroluminescent device comprising the same
CN111699178B (en) Compound and organic light emitting device comprising the same
CN113444098B (en) Novel heterocyclic compound and organic light-emitting element comprising same
CN111670192B (en) Compound and organic light emitting device comprising the same
KR20230108910A (en) Benzosilolocarbazole compound and organic electroluminescence device comprising the same
KR20140023283A (en) Compound containing substituted o-terphenyl structure, and organic electroluminescent element
CN110291077B (en) Novel heterocyclic compound and organic light emitting device comprising the same
KR102541384B1 (en) Novel heterocyclic compound and organic light emitting device comprising the same
CN111212829A (en) Spiro compound and organic light-emitting device comprising same
CN111051323A (en) Compound and organic light emitting device including the same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant