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WO2020080729A1 - Nouveau composé hétérocyclique et dispositif électroluminescent organique l'utilisant - Google Patents

Nouveau composé hétérocyclique et dispositif électroluminescent organique l'utilisant Download PDF

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WO2020080729A1
WO2020080729A1 PCT/KR2019/013216 KR2019013216W WO2020080729A1 WO 2020080729 A1 WO2020080729 A1 WO 2020080729A1 KR 2019013216 W KR2019013216 W KR 2019013216W WO 2020080729 A1 WO2020080729 A1 WO 2020080729A1
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허동욱
홍성길
허정오
한미연
이재탁
양정훈
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LG Chem Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/10—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a carbon chain containing aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/14—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers

Definitions

  • the present invention relates to a novel heterocyclic compound and an organic light emitting device comprising the same.
  • the organic light emitting phenomenon refers to a phenomenon that converts electrical energy into light energy using an organic material.
  • the organic light emitting device using the organic light emitting phenomenon has a wide viewing angle, excellent contrast, and fast response time, and has excellent luminance, driving voltage, and response speed characteristics, and thus many studies have been conducted.
  • the organic light emitting device generally has a structure including an anode and a cathode and an organic material layer between the anode and the cathode.
  • the organic material layer is often formed of a multi-layered structure composed of different materials, for example, may be formed of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like.
  • Patent Document 0001 Korean Patent Publication No. 10-2000-0051826
  • the present invention relates to a novel heterocyclic compound and an organic light emitting device comprising the same.
  • the present invention provides a compound represented by Formula 1 or 2 below:
  • Q is a naphthalene ring
  • Y is O or S
  • L is a single bond; Or substituted or unsubstituted C 6-60 arylene,
  • X are each independently N or C (R 4 ), provided that at least one of X is N,
  • Ar 1 and Ar 2 are each independently hydrogen; heavy hydrogen; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 6-60 aryl; Or C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O and S,
  • a to c are each independently an integer from 0 to 3
  • R 1 to R 4 are each independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 thioalkyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; Or C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O and S, or combine with each other to form a substituted or unsubstituted monocyclic or polycyclic ring. do.
  • the present invention is a first electrode; A second electrode provided to face the first electrode; And at least one layer of an organic material provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer includes a compound represented by Chemical Formula 1 or 2.
  • the compound represented by Chemical Formula 1 or 2 may be used as a material for an organic material layer of an organic light emitting device, and may improve efficiency, low driving voltage, and / or lifespan characteristics in the organic light emitting device.
  • the compound represented by Formula 1 or 2 described above may be used as a hole injection, hole transport, hole injection and transport, light emission, electron transport, or electron injection material.
  • FIG. 1 shows an example of an organic light emitting device including a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
  • FIG. 2 is an example of an organic light emitting device comprising a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light emitting layer 7, an electron injection and transport layer 8 and a cathode 4 It is shown.
  • the present invention provides a compound represented by Formula 1 or 2.
  • substituted or unsubstituted refers to deuterium; Halogen group; Nitrile group; Nitro group; Hydroxy group; Carbonyl group; Ester groups; Imide group; Amino group; Phosphine oxide group; Alkoxy groups; Aryloxy group; Alkyl thioxy group; Arylthioxy group; Alkyl sulfoxy group; Aryl sulfoxyl group; Silyl group; Boron group; Alkyl groups; Cycloalkyl group; Alkenyl group; Aryl group; Aralkyl group; An alkenyl group; Alkyl aryl groups; Alkylamine groups; Aralkylamine group; Heteroarylamine group; Arylamine group; Arylphosphine group; Or substituted or unsubstituted with one or more substituents selected from the group consisting of heterocyclic groups containing one or more of N, O and S atoms, or substituted or unsubstituted with two or more
  • the number of carbon atoms of the carbonyl group is not particularly limited, but is preferably 1 to 40 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
  • the oxygen of the ester group may be substituted with a straight chain, branched or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.
  • the number of carbon atoms of the imide group is not particularly limited, but is preferably 1 to 25 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
  • the silyl group is specifically trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, etc. However, it is not limited thereto.
  • the boron group is specifically a trimethyl boron group, a triethyl boron group, a t-butyldimethyl boron group, a triphenyl boron group, a phenyl boron group, and the like, but is not limited thereto.
  • examples of the halogen group include fluorine, chlorine, bromine or iodine.
  • the alkyl group may be straight chain or branched chain, and carbon number is not particularly limited, but is preferably 1 to 40. According to an exemplary embodiment, the alkyl group has 1 to 20 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 10 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms.
  • alkyl group examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n -Pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl , n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl
  • 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 carbon number of the alkenyl group is 2 to 20. According to another exemplary embodiment, the alkenyl group has 2 to 10 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 6 carbon atoms.
  • Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2- ( Naphthyl-1-yl) vinyl-1-yl, 2,2-bis (diphenyl-1-yl) vinyl-1-yl, steelbenyl group, styrenyl group, and the like, but are not limited thereto.
  • the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to an exemplary embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 6 carbon atoms.
  • the aryl group is not particularly limited, but is preferably 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to one embodiment, the carbon number of the aryl group is 6 to 30. According to one embodiment, the carbon number of the aryl group is 6 to 20.
  • the aryl group may be a phenyl group, a biphenyl group, a terphenyl group, etc., as a monocyclic aryl group, but is not limited thereto.
  • the polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, perylenyl group, chrysenyl group, fluorenyl group, and the like, but is not limited thereto.
  • the fluorenyl group may be substituted, and two substituents may combine with each other to form a spiro structure.
  • the fluorenyl group When the fluorenyl group is substituted, It can be back. However, it is not limited thereto.
  • the heterocyclic group is a heterocyclic group containing one or more of O, N, P, Si and S as heterogeneous elements, and the number of carbon atoms is not particularly limited, but is preferably 2 to 60 carbon atoms.
  • heterocyclic group examples include thiophene group, furan group, pyrrol group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, pyrimidyl group, triazine group, acridil group , Pyridazine group, pyrazinyl group, quinolinyl group, quinazolinyl group, quinoxalinyl group, phthalazinyl group, pyridopyrimidinyl group, pyrido pyrazinyl group, pyrazino pyrazinyl group, isoquinoline group, indole group , Carbazole group, benzoxazole group, benzoimidazole group, benzothiazole group, benzocarbazole group, benzothiophene group, dibenzothiophene group, benzofuranyl group, phenan
  • an aryl group in an aralkyl group, an alkenyl group, an alkylaryl group, and an arylamine group is the same as the exemplified aryl group described above.
  • the alkyl group among the aralkyl group, alkylaryl group, and alkylamine group is the same as the above-described alkyl group.
  • the description of the heteroaryl group among heteroarylamines may be applied.
  • the alkenyl group in the alkenyl group is the same as the exemplified alkenyl group.
  • the description of the aryl group described above may be applied, except that the arylene is a divalent group.
  • the description of the heterocyclic group described above may be applied, except that the heteroarylene is a divalent group.
  • the hydrocarbon ring is not a monovalent group, and a description of the aryl group or cycloalkyl group described above may be applied, except that two substituents are formed by bonding.
  • the heterocycle is not a monovalent group, and the description of the aforementioned heterocyclic group may be applied, except that two substituents are formed by bonding.
  • Formula 1 may be Formula 1-1 or 1-2 below.
  • the formula 2 may be the following formula 2-1 or 2-2.
  • L is a single bond; Phenylene; Or biphenylylene.
  • Ar 1 and Ar 2 may each independently be any one selected from the group consisting of:
  • a to c may all be 0.
  • the compound can be selected from the group consisting of:
  • Reaction Schemes 1 and 2 are Suzuki coupling reactions, and each reaction is preferably performed in the presence of a palladium catalyst and a base, and the reactor for the Suzuki coupling reaction can be modified as known in the art.
  • the manufacturing method may be more specific in the manufacturing examples to be described later.
  • the present invention provides an organic light-emitting device comprising the compound represented by Formula 1 or 2.
  • the present invention is a first electrode; A second electrode provided to face the first electrode; And at least one layer of an organic material provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer includes a compound represented by Chemical Formula 1 or 2.
  • the organic material layer of the organic light emitting device of the present invention may have a single-layer structure, but may have a multi-layer structure in which two or more organic material layers are stacked.
  • 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 as an organic material layer.
  • the structure of the organic light emitting device is not limited thereto, and may include a smaller number of organic layers.
  • the organic material layer may include a hole injection layer, a hole transport layer, or a layer simultaneously performing hole injection and transport, and the hole injection layer, a hole transport layer, or a layer simultaneously performing hole injection and transport may be represented by Chemical Formula 1 or It may contain a compound represented by 2.
  • the organic layer may include a light emitting layer, and the light emitting layer may include a compound represented by Formula 1 or 2.
  • the organic material layer may include an electron transport layer or an electron injection layer, and the electron transport layer or the electron injection layer may include a compound represented by Chemical Formula 1 or 2.
  • the electron transport layer, the electron injection layer, or a layer that simultaneously performs electron transport and electron injection may include a compound represented by Formula 1 or 2.
  • the organic material layer includes a light emitting layer and an electron transport layer
  • the electron transport layer may include a compound represented by Chemical Formula 1 or 2.
  • the organic light emitting device according to the present invention may be an organic light emitting device having a structure in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate. Further, the organic light emitting device according to the present invention may be an organic light emitting device of an inverted type in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.
  • FIGS. 1 and 2 the structure of the organic light emitting device according to an embodiment of the present invention is illustrated in FIGS. 1 and 2.
  • FIG. 1 shows an example of an organic light emitting device including a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
  • the compound represented by Chemical Formula 1 or 2 may be included in the light emitting layer.
  • the compound represented by Chemical Formula 1 or 2 may be included in one or more of the hole injection layer, the hole transport layer, the light emitting layer and the electron injection and transport layer.
  • the organic light emitting device according to the present invention can be made of materials and methods known in the art, except that at least one layer of the organic material layer contains the compound represented by Formula 1 or 2.
  • the organic material layers may be formed of the same material or different materials.
  • the organic light emitting device may be manufactured by sequentially stacking a first electrode, an organic material layer, and a second electrode on a substrate.
  • a positive electrode is formed by depositing a metal or conductive metal oxide or an alloy thereof on a substrate using a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation.
  • PVD physical vapor deposition
  • an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer is formed thereon, and a material that can be used as a cathode is deposited thereon.
  • an organic light emitting device may be formed by sequentially depositing a cathode material, an organic material layer, and a cathode material on a substrate.
  • the compound represented by Chemical Formula 1 or 2 may be formed as an organic material layer by a solution coating method as well as a vacuum deposition method when manufacturing an organic light emitting device.
  • the solution application method means spin coating, dip coating, doctor blading, inkjet printing, screen printing, spraying, roll coating, and the like, but is not limited to these.
  • an organic light emitting device may be manufactured by sequentially depositing an organic material layer and a cathode material from a cathode material on a substrate (WO 2003/012890).
  • the manufacturing method is not limited thereto.
  • the first electrode is an anode
  • the second electrode is a cathode
  • the first electrode is a cathode
  • the second electrode is an anode
  • the positive electrode material is preferably a material having a large work function so that hole injection into the organic material layer is smooth.
  • the positive electrode material include metals such as vanadium, chromium, copper, zinc and gold or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); A combination of metal and oxide such as ZnO: Al or SNO 2 : Sb; Conductive polymers such as poly (3-methylthiophene), poly [3,4- (ethylene-1,2-dioxy) thiophene] (PEDOT), polypyrrole, and polyaniline, but are not limited thereto.
  • the cathode material is preferably a material having a small work function to facilitate electron injection into the organic material layer.
  • the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead, or alloys thereof;
  • There is a multilayer structure material such as LiF / Al or LiO 2 / Al, but is not limited thereto.
  • the hole injection layer is a layer for injecting holes from an electrode, and has the ability to transport holes as a hole injection material, and thus has a hole injection effect at an anode, an excellent hole injection effect for a light emitting layer or a light emitting material, and is produced in the light emitting layer.
  • a compound which prevents migration of the excitons to the electron injection layer or the electron injection material, and which has excellent thin film formation ability is preferable. It is preferable that the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic material layer.
  • HOMO highest occupied molecular orbital
  • hole injection material examples include metal porphyrin, oligothiophene, arylamine-based organic matter, hexanitrile hexaazatriphenylene-based organic matter, quinacridone-based organic matter, and perylene-based Organic materials, anthraquinones, and polyaniline and polythiophene-based conductive polymers, but are not limited thereto.
  • the hole transport layer is a layer that receives holes from the hole injection layer and transports holes from the hole injection layer to the light emitting layer.
  • a material capable of transporting holes from the anode or the hole injection layer to the light emitting layer as a hole transport material and having a large mobility for holes This is suitable.
  • Specific examples include arylamine-based organic materials, conductive polymers, and block copolymers having a conjugated portion and a non-conjugated portion, but are not limited thereto.
  • a material capable of emitting light in the visible light region by receiving and bonding holes and electrons from the hole transport layer and the electron transport layer, respectively is preferably a material having good quantum efficiency for fluorescence or phosphorescence.
  • Specific examples include 8-hydroxy-quinoline aluminum complex (Alq 3 ); Carbazole-based compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzo quinoline-metal compound; Benzoxazole, benzthiazole and benzimidazole compounds; Poly (p-phenylenevinylene) (PPV) polymers; Spiro compounds; Polyfluorene, rubrene, and the like, but are not limited to these.
  • the light emitting layer may include a host material and a dopant material.
  • the host material may be a condensed aromatic ring derivative or a heterocyclic compound.
  • condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, etc.
  • heterocyclic compounds include carbazole derivatives, dibenzofuran derivatives, and ladder types Furan compounds, pyrimidine derivatives, and the like, but are not limited thereto.
  • the dopant material examples include aromatic amine derivatives, strylamine compounds, boron complexes, fluoranthene compounds, and metal complexes.
  • the aromatic amine derivative is a condensed aromatic ring derivative having a substituted or unsubstituted arylamino group, and includes arylamino groups such as pyrene, anthracene, chrysene, periplanten, and the substituted or unsubstituted styrylamine compound.
  • a compound in which at least one arylvinyl group is substituted with the arylamine, a substituent selected from 1 or 2 or more from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group, and an arylamino group is substituted or unsubstituted.
  • a substituent selected from 1 or 2 or more from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group, and an arylamino group is substituted or unsubstituted.
  • styrylamine, styryldiamine, styryltriamine, styryltetraamine, and the like but are not limited thereto.
  • examples of the metal complex include an iridium complex and a platinum complex, but are not limited thereto.
  • the electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the light emitting layer.
  • the electron transport material a material capable of receiving electrons from the cathode and transferring them to the light emitting layer is suitable. Do. Specific examples include the Al complex of 8-hydroxyquinoline; Complexes including Alq 3 ; Organic radical compounds; Hydroxyflavone-metal complexes, and the like, but are not limited to these.
  • the electron transport layer can be used with any desired cathode material as used according to the prior art.
  • suitable cathode materials are those that have a low work function and are followed by an aluminum or silver layer. Specifically, cesium, barium, calcium, ytterbium and samarium, each case followed by an aluminum layer or a silver layer.
  • the electron injection layer is a layer that injects electrons from an electrode, has the ability to transport electrons, has an electron injection effect from a cathode, has an excellent electron injection effect on a light emitting layer or a light emitting material, and hole injection of excitons generated in the light emitting layer A compound that prevents migration to the layer and has excellent thin film forming ability is preferred.
  • fluorenone anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone and the like and their derivatives, metal Complex compounds, nitrogen-containing 5-membered ring derivatives, and the like, but are not limited thereto.
  • Examples of the metal complex compound include 8-hydroxyquinolinato lithium, bis (8-hydroxyquinolinato) zinc, bis (8-hydroxyquinolinato) copper, bis (8-hydroxyquinolinato) manganese, Tris (8-hydroxyquinolinato) aluminum, tris (2-methyl-8-hydroxyquinolinato) aluminum, tris (8-hydroxyquinolinato) gallium, bis (10-hydroxybenzo [h] Quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) chlorogallium, bis (2-methyl-8-quinolinato) ( There are o-cresolato) gallium, bis (2-methyl-8-quinolinato) (1-naphtholato) aluminum, bis (2-methyl-8-quinolinato) (2-naphtholato) gallium, It is not limited to this.
  • the organic light emitting device may be a front emission type, a back emission type, or a double-sided emission type depending on the material used.
  • the compound represented by Formula 1 or 2 may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.
  • a compound represented by Chemical Formula E2 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E3 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E4 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E5 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E6 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E7 was prepared in the same manner as in the production method of E1 of Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E8 was prepared in the same manner as in the production method of E1 of Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E9 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E10 was prepared in the same manner as in E1 of Example 1, except that each starting material was in the same manner as in the above reaction formula.
  • a compound represented by Chemical Formula E11 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E12 was prepared in the same manner as in the production method of E1 of Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E13 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E14 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E15 was prepared in the same manner as in the production method of E1 of Example 1, except that each starting material was as in the above reaction formula.
  • a compound represented by Chemical Formula E16 was prepared in the same manner as in the production method of E1 in Example 1, except that each starting material was as in the above reaction formula.
  • a glass substrate coated with a thin film of indium tin oxide (ITO) at a thickness of 1000 ⁇ was placed in distilled water in which detergent was dissolved and washed with ultrasonic waves.
  • ITO indium tin oxide
  • Fischer Co. was used as a detergent
  • distilled water filtered secondarily by a filter of Millipore Co. was used as distilled water.
  • ultrasonic cleaning was repeated twice for 10 minutes with distilled water.
  • ultrasonic cleaning was performed with a solvent of isopropyl alcohol, acetone, and methanol, followed by drying and transporting to a plasma cleaner.
  • the substrate was transferred to a vacuum evaporator.
  • the following HI-A compound was thermally vacuum-deposited to a thickness of 600 Pa to form a hole injection layer.
  • the following HAT compound 50- and the following HT-A compound 60 ⁇ were sequentially vacuum-deposited to form a hole transport layer.
  • a BH compound and a BD compound having a thickness of 20 nm on the hole transport layer were vacuum-deposited in a weight ratio of 25: 1 to form a light emitting layer.
  • the compound (E1) of Example 1 and the following LiQ compound were vacuum deposited at a weight ratio of 1: 1 to form an electron injection and transport layer with a thickness of 350 MPa.
  • lithium fluoride (LiF) with a thickness of 10 mm 2 and aluminum with a thickness of 1000 mm 2 were sequentially deposited to form a negative electrode.
  • the deposition rate of the organic material was maintained at 0.4 to 0.9 ⁇ / sec
  • the lithium fluoride of the negative electrode was maintained at a deposition rate of 0.3 ⁇ / sec
  • the aluminum was maintained at a deposition rate of 2 ⁇ / sec
  • the vacuum degree during deposition was 1 ⁇ 10 ⁇ .
  • An organic light emitting device was manufactured by maintaining 7 to 5 ⁇ 10 ⁇ 5 torr.
  • An organic light-emitting device was manufactured in the same manner as in Experimental Example 1, except that the compounds (E2 to E16) of Examples 2 to 16 were used instead of the compound (E1) of Example 1.
  • An organic light-emitting device was manufactured in the same manner as in Experimental Example 1, except that the following compounds (ET-1-A to ET-1-M) were used instead of the compound (E1) of Example 1.
  • the driving voltage and luminous efficiency were measured at the current density of 10 mA / cm 2 for the organic light-emitting device manufactured in the Experimental Example and Comparative Example, and the time to become 90% of the initial luminance at the current density of 20 mA / cm 2 (T90) was measured.
  • the results are shown in Table 1 below.
  • the compound represented by Chemical Formula 1 or 2 according to the present invention may be used in an organic material layer capable of simultaneously electron injection and electron transport of the organic light emitting device.
  • the compound in which the aryl ring is formed on the fluorene group of xanthene or cyoxanthene, as in Formula 1 or 2 according to the present invention is a xanthene or cyoxanthene fluorene group. It is remarkably superior in terms of the lifespan of the organic light emitting device compared to a compound in which an aryl ring is not formed.
  • the compound in which triazine or pyrimidine is substituted with a naphthyl group of xanthene or cyoxanthene as in Formula 1 or 2 according to the present invention is xanthene or cyo Compared to a compound in which triazine or pyrimidine is substituted at a substitution position excluding the naphthyl group of xanthene, it is remarkably superior in terms of the life of the organic light emitting device.
  • substrate 2 anode

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

Abstract

La présente invention concerne un nouveau composé hétérocyclique et un dispositif électroluminescent organique l'utilisant.
PCT/KR2019/013216 2018-10-19 2019-10-08 Nouveau composé hétérocyclique et dispositif électroluminescent organique l'utilisant Ceased WO2020080729A1 (fr)

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KR1020180125498A KR102258617B1 (ko) 2018-10-19 2018-10-19 신규한 헤테로 고리 화합물 및 이를 이용한 유기발광 소자

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KR20240085997A (ko) * 2022-12-09 2024-06-18 주식회사 엘지화학 화합물 및 이를 포함하는 유기 발광 소자

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KR102885064B1 (ko) 2020-04-24 2025-11-11 주식회사 엘지화학 헤테로고리 화합물 및 이를 포함하는 유기 발광 소자

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