WO2020111584A1 - Nouveau composé et diode électroluminescente organique l'utilisant - Google Patents

Nouveau composé et diode électroluminescente organique l'utilisant Download PDF

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WO2020111584A1
WO2020111584A1 PCT/KR2019/015360 KR2019015360W WO2020111584A1 WO 2020111584 A1 WO2020111584 A1 WO 2020111584A1 KR 2019015360 W KR2019015360 W KR 2019015360W WO 2020111584 A1 WO2020111584 A1 WO 2020111584A1
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정민우
이동훈
장분재
홍완표
서상덕
이정하
한수진
박슬찬
황성현
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주식회사 엘지화학
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Priority claimed from KR1020190142728A external-priority patent/KR102341765B1/ko
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Priority to US17/282,071 priority Critical patent/US20210355128A1/en
Priority to CN201980063552.8A priority patent/CN112771033B/zh
Publication of WO2020111584A1 publication Critical patent/WO2020111584A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing three or more hetero rings
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    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D407/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00
    • C07D407/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 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
    • C07D409/14—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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
    • C07D493/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
    • C07D495/02—Heterocyclic 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
    • C07D495/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
    • C07D498/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
    • C07D513/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
    • C07D513/04—Ortho-condensed systems
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80

Definitions

  • the present invention relates to a novel 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 compound and an organic light emitting device comprising the same.
  • the present invention provides a compound represented by Formula 1:
  • X are each independently N or CH, provided that at least 1 of X is N,
  • Ar 1 and Ar 2 are each independently substituted or unsubstituted C 6-60 aryl; Or a substituted or unsubstituted C 5-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S,
  • Ar 3 is a substituted or unsubstituted C 5-60 heteroaryl containing N or more
  • D is a substituent represented by any one of the following formulas 2-1 to 2-3,
  • Y 1 is O; S; NR 2 , or CR 3 R 4 ,
  • n is each independently an integer from 0 to 10,
  • R 1 is each independently hydrogen; heavy hydrogen; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; Or a substituted or unsubstituted C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S,
  • R 2 to R 4 are each independently substituted or unsubstituted C 1-60 alkyl; Or substituted or unsubstituted C 6-60 aryl.
  • the present invention is a first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer provides an organic light emitting device including the compound represented by Chemical Formula 1.
  • the compound represented by Chemical Formula 1 may be used as a material of an organic material layer of an organic light emitting device, and may improve efficiency, low driving voltage, and/or life characteristics in the organic light emitting device.
  • the compound represented by Formula 1 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.
  • Figure 2 shows an example of an organic light emitting device consisting of a substrate (1), an anode (2), a hole injection layer (5), a hole transport layer (6), a light emitting layer (7), an electron transport layer (8) and a cathode (4) Did.
  • 3 is a substrate (1), anode (2), hole injection layer (5), hole transport layer (6), electron blocking layer (9), light emitting layer (7), hole blocking layer (10), electron transport layer (8) , It shows an example of an organic light-emitting device consisting of the electron injection layer 11 and the cathode (4).
  • the present invention provides a compound represented by Formula 1 above.
  • 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; Ar 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-butyl dimethyl 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 a straight chain or a branched chain, 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, styrenyl 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 monocyclic aryl group, such as a phenyl group, a biphenyl group, a terphenyl 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, Si and S as heterogeneous elements, and the number of carbon atoms is not particularly limited, but is preferably 2 to 60 carbon atoms.
  • the heterocyclic group 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, triazole group, Acridil group, pyridazine group, pyrazinyl group, quinolinyl group, quinazolinyl group, quinoxalinyl group, phthalazinyl group, pyridopyrimidinyl group, pyridopyrazinyl group, pyrazino pyrazinyl group, isoquinoline group , Indole group,
  • 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 example of the alkyl group.
  • heteroarylamine among heteroarylamines may be applied to the description of the aforementioned heterocyclic group.
  • 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 the 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.
  • the formula 1 may be represented by any one of the following formulas 1-1 to 1-3:
  • n can be each independently 0, 1 or 2.
  • Y 1 is O; S; NR 2 , or CR 3 R 4 , wherein R 2 to R 4 are each independently substituted or unsubstituted C 1-10 alkyl; Or substituted or unsubstituted C 6-20 aryl, more preferably, Y 1 is O; S; N(C 6 H 5 ), N(C 6 D 5 ), or C(CH 3 ) 2 .
  • Ar 1 and Ar 2 may be each independently substituted or unsubstituted C 6-20 aryl, more preferably, Ar 1 and Ar 2 are each independently phenyl; Biphenyl; Naphthyl; Or it may be a phenyl substituted with 1 to 5 deuterium.
  • Ar 3 may be a substituted or unsubstituted C 5-30 heteroaryl containing one or more N, more preferably, Ar 3 is represented by any one of the following Formulas 3-1 to 3-5 Can be a substituent:
  • Z is each independently N or CH, provided that at least one of Z is N,
  • Ar 4 and Ar 5 are each independently substituted or unsubstituted C 6-60 aryl; Or a substituted or unsubstituted C 5-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S,
  • Ar 6 is substituted or unsubstituted C 6-60 aryl
  • Y 2 is O or S
  • n are each independently an integer from 0 to 4,
  • R 5 are each independently hydrogen; heavy hydrogen; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; Or a substituted or unsubstituted C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S.
  • the formula 3-1 may be any one selected from the group consisting of:
  • Ar 4 and Ar 5 are each independently substituted or unsubstituted C 6-20 aryl; Or it may be a substituted or unsubstituted C 5-30 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S, More preferably, Ar 4 and Ar 5 are each independently It can be any one selected from the group consisting of:
  • Ar 6 may be substituted or unsubstituted C 6-20 aryl, more preferably, Ar 6 is phenyl; Biphenyl; Or it may be a phenyl substituted with 1 to 5 deuterium.
  • m can be each independently 0, 1 or 2.
  • the compound can be selected from the group consisting of:
  • the present invention provides an organic light emitting device comprising the compound represented by the formula (1).
  • the present invention is a first electrode; A second electrode provided to face the first electrode; And an organic light emitting device including 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, and an organic light emitting device is provided. do.
  • 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 fewer organic layers.
  • the organic material layer may include a hole injection layer, a hole transport layer, a layer that simultaneously performs hole injection and transport, or an electron blocking layer, and the hole injection layer, a hole transport layer, and a layer or hole that simultaneously performs hole injection and transport
  • the layer may include a compound represented by Formula 1 above.
  • the organic material layer may include a light emitting layer, and the light emitting layer may include a compound represented by Chemical Formula 1.
  • the compound represented by Formula 1 may be used as a host material in the light emitting layer, and more specifically, the compound represented by Formula 1 may be used as a host used in the light emitting layer of the green organic light emitting device.
  • the organic material layer may include a hole blocking layer, an electron transport layer, an electron injection layer, or a layer that simultaneously performs electron transport and electron injection, and the hole blocking layer, electron transport layer, electron injection layer, or electron transport and electron
  • the simultaneous injection layer may include a compound represented by Chemical Formula 1 above.
  • the organic light emitting device according to the present invention may be an organic light emitting device having a structure (normal type) in which an anode, 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. For example, the structure of the organic light emitting device according to an embodiment of the present invention is illustrated in FIGS. 1 to 3.
  • 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 may be included in the light emitting layer.
  • Figure 2 shows an example of an organic light emitting device consisting of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light emitting layer 7, an electron transport layer 8 and a cathode 4 Did.
  • the compound represented by Chemical Formula 1 may be included in one or more of the hole injection layer, the hole transport layer, the light emitting layer, and the electron transport layer.
  • the compound represented by Chemical Formula 1 may be included in one or more of the hole injection layer, the hole transport layer, the electron blocking layer, the light emitting layer, the hole blocking layer, the electron transport layer, and the electron injection 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 Chemical Formula 1.
  • the organic material layers may be formed of the same material or different materials.
  • the organic light emitting device can 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 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;
  • 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 generated in the light emitting layer.
  • a compound that prevents migration of the excitons to the electron injection layer or the electron injection material and has excellent thin film formation ability is preferred.
  • the high 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 layer.
  • hole injection material examples include metal porphyrin, oligothiophene, arylamine-based organic substances, hexanitrile hexaazatriphenylene-based organic substances, quinacridone-based organic substances, and perylene-based substances.
  • Organic anthraquinone and polyaniline and polythiophene-based conductive polymers 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. It is a material that transports holes from the anode or the hole injection layer as a hole transport material and transfers them to the light emitting layer. 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.
  • the electron blocking layer is formed on the hole transport layer, and is preferably provided in contact with the light emitting layer to control hole mobility, prevent excessive movement of electrons, and increase the probability of hole-electron bonding, thereby increasing the efficiency of the organic light emitting device. It serves to improve.
  • the electron blocking layer includes an electron blocking material, and a material having a stable structure in which electrons do not flow out of the light emitting layer is suitable as the electron blocking material.
  • an arylamine-based organic material or the like may be used, but is not limited thereto.
  • a material capable of emitting light in the visible 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 pyrene, anthracene, chrysene, periplanene, etc. having an arylamino group, and substituted or unsubstituted as a 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, a platinum complex, and the like, but are not limited thereto.
  • the hole blocking layer is formed on the light emitting layer, and specifically, the hole blocking layer is provided in contact with the light emitting layer, thereby preventing excessive movement of holes and increasing the probability of hole-electron bonding, thereby improving the efficiency of the organic light emitting device Do it.
  • the hole blocking layer includes a hole blocking material, and as the hole blocking material, a material having a stable structure in which holes may not flow out of the light emitting layer is suitable. Examples of the hole blocking material include azine derivatives including triazine; Triazole derivatives; Oxadiazole derivatives; Phenanthroline derivatives; Compounds in which an electron withdrawing group is introduced, such as a phosphine oxide derivative, may be used, but is 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 thereto.
  • 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, followed by an aluminum layer or a silver layer in each case.
  • 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, an excellent electron injection effect for a light emitting layer or a light emitting material, and injects holes 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, and 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-naphtolato) 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 Chemical Formula 1 may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.
  • step 2 of Synthesis Example 1 except for using 12H-benzofuro[3,2-a]carbazole was changed to 8H-benzofuro[2,3-c]carbazole, and the same method as in Compound 1 was prepared.
  • step 2 of Synthesis Example 1 except that 12H-benzofuro[3,2-a]carbazole was changed to 11,11-dimethyl-5,11-dihydroindeno[1,2-b]carbazole, the compound was used.
  • compound 5-a 15 g, 41.5 mmol
  • bis (pinacolato) diboron 11.6 g, 45.6 mmol
  • potassium acetate 12.2g, 124.4mmol
  • bis(dibenzylideneacetone)palladium(0) 0.g, 1.2mmol
  • tricyclohexylphosphine 0.g, 2.5mmol
  • ITO Indium Tin Oxide
  • distilled water filtered secondarily by a filter of Millipore Co.
  • ultrasonic cleaning was repeated twice with distilled water for 10 minutes.
  • ultrasonic cleaning was performed with a solvent of isopropyl alcohol, acetone, and methanol, followed by drying and then transported to a plasma cleaner.
  • the substrate was transferred to a vacuum evaporator.
  • the following HT-A compound and the following PD compound were thermally vacuum-deposited to a thickness of 100 ⁇ at a weight ratio of 95:5, and then the following HT-A compound was deposited to a thickness of 1150 ⁇ to form a hole transport layer. Formed.
  • the following HT-B compound was thermally vacuum-deposited to a thickness of 450 MPa to form an electron blocking layer.
  • Compound 1 and the following GD compound prepared above were vacuum-deposited at a weight ratio of 85:15 to a thickness of 400 Pa to form a light emitting layer.
  • a hole blocking layer was formed by vacuum-depositing the following ET-A compound to a thickness of 50 MPa.
  • the following ET-B compound and the following Liq compound were thermally vacuum-deposited to a thickness of 250 ⁇ at a weight ratio of 2:1, and then vacuum-deposited LiF and magnesium at a thickness of 30 ⁇ at a weight ratio of 1:1.
  • To form an electron transport and injection layer On the electron injection layer, magnesium and silver were deposited to a thickness of 160 4 in a weight ratio of 1:4 to form a cathode, thereby manufacturing an organic light emitting device.
  • the deposition rate of the organic material was maintained at 0.4 to 0.7 ⁇ /sec
  • the lithium fluoride of the negative electrode was maintained at a deposition rate of 0.3 ⁇ /sec for silver and magnesium, and 2 ⁇ /sec for silver and magnesium.
  • An organic light-emitting device was fabricated by maintaining x10 -7 to 5x10 -6 torr.
  • An organic light-emitting device was manufactured in the same manner as in Experimental Example 1, except that the compound shown in Table 1 below was used instead of Compound 1.
  • T95 Voltage, efficiency, and lifetime
  • intra charge transfer is easy because the substituents represented by Formulas 2-1 to 2-3, which serve as electron donors, and the monocyclic nitrogen-containing heterocycle that acts as an electron acceptor are bonded to each other at the ortho positions. It can be done. Particularly, in Formula 2-1, the area facing the monocyclic nitrogen-containing heterocycle is larger than in the similar substituents, and in Formula 2-2 and Formula 2-3, the Y is located at the para position of the nitrogen atom, thereby pushing electrons further. It has strong properties, both of which are more advantageous for intra charge transfer. Due to this, the stability of the molecule is high, and it is advantageous for both hole and electron transport. In addition, since Ar 3 is further substituted with various nitrogen-containing heterocycles, electron transport properties can be variously controlled, which is advantageous for balancing charges due to changes in the common layer.
  • substrate 2 anode

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un nouveau composé et une diode électroluminescente organique l'utilisant.
PCT/KR2019/015360 2018-11-27 2019-11-12 Nouveau composé et diode électroluminescente organique l'utilisant WO2020111584A1 (fr)

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US17/282,071 US20210355128A1 (en) 2018-11-27 2019-11-12 Novel compound and organic light emitting device comprising the same
CN201980063552.8A CN112771033B (zh) 2018-11-27 2019-11-12 新的化合物和包含其的有机发光器件

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KR10-2019-0142728 2019-11-08
KR1020190142728A KR102341765B1 (ko) 2018-11-27 2019-11-08 신규한 화합물 및 이를 이용한 유기 발광 소자

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100131939A (ko) * 2009-06-08 2010-12-16 에스에프씨 주식회사 인돌로카바졸 유도체 및 이를 이용한 유기전계발광소자
KR20180047306A (ko) * 2016-10-31 2018-05-10 성균관대학교산학협력단 지연형광 재료 및 이를 포함하는 유기 발광장치
US20180145262A1 (en) * 2016-11-21 2018-05-24 Universal Display Corporation Organic Electroluminescent Materials and Devices
KR20180065276A (ko) * 2016-12-07 2018-06-18 주식회사 엘지화학 헤테로고리 화합물 및 이를 포함하는 유기 발광 소자
KR20180098809A (ko) * 2017-02-27 2018-09-05 삼성전자주식회사 축합환 화합물 및 이를 포함한 유기 발광 소자

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100131939A (ko) * 2009-06-08 2010-12-16 에스에프씨 주식회사 인돌로카바졸 유도체 및 이를 이용한 유기전계발광소자
KR20180047306A (ko) * 2016-10-31 2018-05-10 성균관대학교산학협력단 지연형광 재료 및 이를 포함하는 유기 발광장치
US20180145262A1 (en) * 2016-11-21 2018-05-24 Universal Display Corporation Organic Electroluminescent Materials and Devices
KR20180065276A (ko) * 2016-12-07 2018-06-18 주식회사 엘지화학 헤테로고리 화합물 및 이를 포함하는 유기 발광 소자
KR20180098809A (ko) * 2017-02-27 2018-09-05 삼성전자주식회사 축합환 화합물 및 이를 포함한 유기 발광 소자

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