WO2022206396A1 - 主体材料组合物和有机电致发光器件及电子装置 - Google Patents

主体材料组合物和有机电致发光器件及电子装置 Download PDF

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WO2022206396A1
WO2022206396A1 PCT/CN2022/081284 CN2022081284W WO2022206396A1 WO 2022206396 A1 WO2022206396 A1 WO 2022206396A1 CN 2022081284 W CN2022081284 W CN 2022081284W WO 2022206396 A1 WO2022206396 A1 WO 2022206396A1
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马天天
杨敏
南朋
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陕西莱特光电材料股份有限公司
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic 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
    • C07D487/04—Ortho-condensed systems
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    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • H—ELECTRICITY
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    • 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
    • H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
    • H—ELECTRICITY
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    • 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
    • H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
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    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
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    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1059—Heterocyclic compounds characterised by ligands containing three nitrogen atoms as heteroatoms
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    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1088—Heterocyclic compounds characterised by ligands containing oxygen as the only heteroatom

Definitions

  • the present application belongs to the technical field of organic electroluminescence devices, and specifically provides a host material composition, an organic electroluminescence device and an electronic device.
  • Such electronic components usually include oppositely disposed cathodes and anodes, and functional layers disposed between the cathodes and the anodes.
  • the functional layer is composed of multiple organic or inorganic film layers, and generally includes an energy conversion layer, a hole transport layer between the energy conversion layer and the anode, and an electron transport layer between the energy conversion layer and the cathode.
  • an organic electroluminescent device as an example, it generally includes an anode, a hole transport layer, an organic light emitting layer as an energy conversion layer, an electron transport layer and a cathode which are stacked in sequence.
  • an electric field is generated between the two electrodes.
  • the electrons on the cathode side move to the electroluminescent layer, and the holes on the anode side also move to the light-emitting layer, and the electrons and holes combine in the electroluminescent layer.
  • Excitons in an excited state are formed, and the excitons release energy to the outside, thereby causing the organic light-emitting layer to emit light to the outside.
  • the purpose of the present application is to provide a new host material composition, organic electroluminescent device and electronic device.
  • the host material composition of the present application can effectively improve the performance of organic electroluminescent devices.
  • the present application provides a host material composition, the host material composition comprising a first compound and a second compound; the structure of the first compound is shown in formula 1, and the structure of the second compound is shown in formula 2 shows:
  • Ar is selected from substituted or unsubstituted aryl groups with 6-30 carbon atoms and substituted or unsubstituted heteroaryl groups with 3-30 carbon atoms; Het is selected from 2-20 carbon atoms The substituted or unsubstituted nitrogen-containing heteroarylene group, and the nitrogen-containing heteroarylene group contains at least 2 N atoms; Ar 1 and Ar 2 are each independently selected from hydrogen, carbon atoms of 6-30 Substituted or unsubstituted aryl groups, substituted or unsubstituted heteroaryl groups with 3 to 20 carbon atoms;
  • R 1 , R 2 , R 3 , R 4 and R 5 are the same or different, and are each independently selected from deuterium, fluorine, cyano, alkyl groups having 1 to 10 carbon atoms, and alkyl groups having 6 to 20 carbon atoms.
  • n 1 represents the number of R 1 , selected from 0, 1, 2, 3 or 4, when n 1 is greater than 1, any two R 1 are the same or different, optionally, two adjacent R 1 form a ring ;
  • n 2 represents the number of R 2 , selected from 0, 1 or 2, when n 2 is 2, any two R 2 are the same or different, optionally, two adjacent R 2 form a ring;
  • n 3 Represents the number of R 3 , selected from 0, 1, 2, 3 or 4, when n 3 is greater than 1, any two R 3 are the same or different, optionally, two adjacent R 3 form a ring;
  • n 4 represents the number of R 4 , selected from 0, 1 or 2, when n 4 is greater than 1, any two R 4 are the same or different;
  • n 5 represents the number of R 5 , selected from 0, 1, 2, 3 Or 4, when n 5 is greater than 1, any two R 5 are the same or different, optionally, two adjacent R 5 form a ring;
  • the substituents in Het, Ar, Ar 1 and Ar 2 are each independently selected from deuterium, halogen group, cyano group, heteroaryl group with 3-15 carbon atoms, aryl group with 6-15 carbon atoms group, trialkylsilyl group with 3-12 carbon atoms, alkyl group with 1-10 carbon atoms, deuterated alkyl group with 1-10 carbon atoms, haloalkyl group with 1-10 carbon atoms or a cycloalkyl group with 3 to 10 carbon atoms;
  • Ar 3 and Ar 4 are each independently selected from substituted or unsubstituted aryl groups with 6-30 carbon atoms and substituted or unsubstituted heteroaryl groups with 8-25 carbon atoms;
  • the substituents in Ar 3 and Ar 4 are each independently selected from deuterium, halogen group, cyano group, heteroaryl group with 3 to 15 carbon atoms, aryl group with 6 to 15 carbon atoms, Deuterated aryl group of 6-12, trialkylsilyl group of carbon number of 3-7, alkyl group of carbon number of 1-10, haloalkyl group of carbon number of 1-10 or carbon number of 3 ⁇ 10 cycloalkyl;
  • R a and R b are the same or different, and are independently selected from deuterium, halogen group, cyano group, alkyl group having 1 to 10 carbon atoms, cycloalkyl group having 3 to 10 carbon atoms, is an aryl group of 6 to 20 or a heteroaryl group of 5 to 15 carbon atoms;
  • n a represents the number of R a , selected from 0, 1, 2, 3, 4, 5, 6 or 7, when n a is greater than 1, any two R a are the same or different, optionally, adjacent Two R a form a ring;
  • n b represents the number of R b , selected from 0, 1, 2, 3, 4, 5, 6 or 7, when n b is greater than 1, any two R b are the same or different, Optionally, two adjacent R bs form a ring.
  • the present application provides an organic electroluminescent device, which includes an anode, a cathode, and a functional layer disposed between the anode and the cathode, wherein the functional layer includes an organic light-emitting layer, wherein the organic The light-emitting layer includes the host material composition described in one aspect of the present application.
  • the present application provides an electronic device comprising the organic electroluminescent device described in the second aspect of the present application.
  • the first compound is a structure formed by the combination of an electron-deficient azaaryl group-an electron-rich indolocarbazole group-dibenzofuranyl group; an electron-deficient azaaryl group
  • the electron-rich indolocarbazole group and the electron-rich indolocarbazole group have high electron and hole injection and transport properties, respectively, making the material molecular structure bipolar, suitable for the light-emitting layer in organic electroluminescent devices;
  • the furanyl group is directly connected to the nitrogen atom of the indolocarbazole group at the 2nd position.
  • the energy transfer efficiency to the guest molecule is improved, which can effectively improve the performance of the device.
  • the substitution of aryl or heteroaryl at the 4th position of the dibenzofuran group can not only improve the carrier mobility and energy transmission efficiency of the material, but also effectively improve the stability of the molecular structure.
  • the first compound as an electron transport type (ET-type) host material has high compatibility with the biscarbazole compound (ie the second compound) as a hole transport type (HT-type) host material, During the evaporation process, the evaporation rate can be basically maintained to ensure that the ratio of the mixture of the donor and acceptor materials formed during evaporation to the substrate remains almost unchanged.
  • the mixture When a voltage is applied, the mixture forms an excited complex to avoid The light-emitting region is offset, thereby improving the transport performance of carriers, and effectively improving the light-emitting efficiency and service life of the organic electroluminescent device while ensuring that the organic electroluminescent device has a lower driving voltage.
  • FIG. 1 is a schematic structural diagram of an organic electroluminescent device according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • each independently selected from and “are independently selected from” and “are independently selected from” can be interchanged, and should be understood in a broad sense, which can be either It means that in different groups, the specific options expressed between the same symbols do not affect each other, and it can also mean that in the same group, the specific options expressed between the same symbols do not affect each other.
  • each q is independently selected from 0, 1, 2 or 3, and each R" is independently selected from hydrogen, deuterium, fluorine, chlorine", and its meaning is:
  • formula Q-1 represents that there are q substituents R on the benzene ring ", each R” can be the same or different, and the options of each R" do not affect each other;
  • formula Q-2 indicates that each benzene ring of biphenyl has q substituents R", and the two benzene rings have q substituents R".
  • the number q of R" substituents may be the same or different, and each R" may be the same or different, and the options of each R" do not affect each other.
  • the terms “optional” and “optionally” mean that the subsequently described event or circumstance can, but need not, occur, and that the description includes instances where the event or circumstance does or does not occur.
  • “optionally, two adjacent substituents form a ring” means that the two substituents may form a ring but need not form a ring, including: scenarios where two adjacent substituents form a ring and two phases The case where the adjacent substituents do not form a ring.
  • substituted or unsubstituted means that the functional group described after the term may or may not have a substituent (hereinafter, for the convenience of description, the substituents are collectively referred to as R c ).
  • substituted or unsubstituted aryl refers to an aryl group having a substituent Rc or an unsubstituted aryl group.
  • substituent group namely R c
  • R c can be, for example, deuterium, halogen group, cyano group, heteroaryl group, aryl group, deuterated aryl group, trialkylsilyl group, alkyl group, deuterated alkyl group, halogenated alkyl group , cycloalkyl, etc.
  • the two substituent groups R c When two substituent groups R c are attached to the same atom, the two substituent groups R c may exist independently or be connected to each other to form a ring with the atom; when there are two adjacent substituent groups R c on the functional group When , the adjacent two substituents R c can exist independently or be condensed to form a ring with the functional group to which they are connected.
  • the number of carbon atoms of a substituted or unsubstituted functional group refers to the number of all carbon atoms. For example, if Ar is selected from a substituted aryl group having 12 carbon atoms, then all carbon atoms in the aryl group and the substituents thereon are 12.
  • aryl refers to an optional functional group or substituent derived from an aromatic carbocyclic ring.
  • Aryl groups can be monocyclic aryl groups (eg, phenyl) or polycyclic aryl groups, in other words, aryl groups can be monocyclic aryl groups, fused-ring aryl groups, two or more monocyclic aryl groups conjugated through carbon-carbon bonds. Cyclic aryl groups, monocyclic aryl groups and fused-ring aryl groups linked by carbon-carbon bond conjugation, two or more fused-ring aryl groups linked by carbon-carbon bond conjugation. That is, unless otherwise specified, two or more aromatic groups linked by carbon-carbon bond conjugation may also be considered aryl groups in the present application.
  • the fused ring aryl group may include, for example, a bicyclic fused aryl group (eg, naphthyl), a tricyclic fused aryl group (eg, phenanthrenyl, fluorenyl, anthracenyl), and the like.
  • the aryl group does not contain heteroatoms such as B, N, O, S, P, Se and Si.
  • a biphenyl group, a terphenyl group, and a 9, 9- dimethyl fluorenyl group are all regarded as an aryl group in this application.
  • aryl groups may include, but are not limited to, phenyl, naphthyl, fluorenyl, anthracenyl, phenanthryl, biphenyl, terphenyl, benzo[9,10]phenanthryl, pyrenyl, benzofluoranthene base, Base et al.
  • a substituted aryl group may be one or more than two hydrogen atoms in the aryl group replaced by a group such as deuterium, halogen group, cyano, aryl, deuterated aryl, heteroaryl, trialkylsilicon radical, alkyl, cycloalkyl, deuterated alkyl, haloalkyl and other groups are substituted.
  • a group such as deuterium, halogen group, cyano, aryl, deuterated aryl, heteroaryl, trialkylsilicon radical, alkyl, cycloalkyl, deuterated alkyl, haloalkyl and other groups are substituted.
  • heteroaryl-substituted aryl groups include, but are not limited to, dibenzofuranyl-substituted phenyl groups, dibenzothiophene-substituted phenyl groups, pyridine-substituted phenyl groups, and the like.
  • the number of carbon atoms in a substituted aryl group refers to the total number of carbon atoms in the aryl group and the substituents on the aryl group, for example, a substituted aryl group with a carbon number of 18 refers to the aryl group and its substituents.
  • the total number of carbon atoms of the substituents on is 18.
  • a heteroaryl group refers to a monovalent aromatic ring or a derivative thereof containing at least one heteroatom in the ring, and the heteroatom may be at least one of B, O, N, P, Si, Se and S.
  • a heteroaryl group can be a monocyclic heteroaryl group or a polycyclic heteroaryl group, in other words, a heteroaryl group can be a single aromatic ring system or multiple aromatic ring systems linked by carbon-carbon bonds, and any aromatic The ring system is an aromatic monocyclic ring or an aromatic fused ring.
  • heteroaryl groups can include thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolinyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl Azinyl, isoquinolinyl, indolyl, carbazolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothienyl, dibenzothienyl, thiophene thieny
  • heteroaryl groups of a single aromatic ring system type
  • N-phenylcarbazolyl and N-pyridyl are polycyclic system types connected by carbon-carbon bond conjugation.
  • Heteroaryl the heteroarylene group referred to refers to a divalent or higher valent group formed by the further loss of one or more hydrogen atoms from the heteroaryl group.
  • a substituted heteroaryl group may be a heteroaryl group where one or more than two hydrogen atoms are replaced by groups such as deuterium, halogen, cyano, aryl, heteroaryl, trialkylsilyl, alkane group, cycloalkyl, deuterated alkyl, haloalkyl and other groups.
  • aryl-substituted heteroaryl groups include, but are not limited to, phenyl-substituted dibenzofuranyl, phenyl-substituted dibenzothienyl, phenyl-substituted pyridyl, and the like. It should be understood that the number of carbon atoms in a substituted heteroaryl group refers to the total number of carbon atoms in the heteroaryl group and the substituents on the heteroaryl group.
  • a non-positioned connecting bond refers to a single bond extending from the ring system It means that one end of the linking bond can be connected to any position in the ring system through which the bond runs, and the other end is connected to the rest of the compound molecule.
  • the naphthyl group represented by the formula (f) is connected to other positions of the molecule through two non-positioned linkages running through the bicyclic ring. -1) to any possible connection method shown in formula (f-10).
  • the phenanthrene represented by the formula (X') is connected to other positions of the molecule through a non-positioned link extending from the middle of one side of the benzene ring, which represents The meaning of , includes any possible connection modes shown by formula (X'-1) to formula (X'-4).
  • a non-positioned substituent in the present application refers to a substituent attached through a single bond extending from the center of the ring system, which means that the substituent may be attached at any possible position in the ring system.
  • the substituent R' represented by the formula (Y) is connected to the quinoline ring through a non-positioning link, and the meanings represented by the formula (Y-1) to Any possible connection mode shown by formula (Y-7).
  • the alkyl group with 1-10 carbon atoms may include straight-chain alkyl groups with 1-10 carbon atoms and branched-chain alkyl groups with 3-10 carbon atoms, and the number of carbon atoms may be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
  • alkyl group having 1 to 10 carbon atoms include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl base, neopentyl, cyclopentyl, n-hexyl, heptyl, n-octyl, 2-ethylhexyl, nonyl, decyl, 3,7-dimethyloctyl and the like.
  • halogen groups may include fluorine, iodine, bromine, chlorine, and the like.
  • the number of carbon atoms of the aryl group as a substituent may be 6-15, and the number of carbon atoms is specifically 6, 10, 12, 13, 14, etc.
  • Specific examples of the aryl group include, but are not limited to, phenyl , naphthyl, biphenyl, fluorenyl, phenanthrenyl, anthracenyl, etc.
  • the number of carbon atoms of the heteroaryl group as a substituent may be 3 to 15, and the number of carbon atoms is, for example, 3, 4, 5, 8, 9, 10, 12, 13, 14, 15, etc.
  • Specific examples of aryl groups include, but are not limited to, pyridyl, quinolyl, dibenzofuranyl, dibenzothienyl, carbazolyl, and the like.
  • the number of carbon atoms of the trialkylsilyl group as a substituent may be 3-12, 3-6, 3-7, etc., for example, 3, 6, 7 and the like.
  • Specific examples of trialkylsilyl groups include, but are not limited to, trimethylsilyl, ethyldimethylsilyl, triethylsilyl, and the like.
  • the number of carbon atoms of the cycloalkyl group as a substituent may be 3-10, preferably 5-10, and more preferably 5-8.
  • Specific examples of cycloalkyl groups include, but are not limited to, cyclopentyl, cyclohexyl, adamantyl, and the like.
  • the haloalkyl group may be, for example, trifluoromethyl.
  • the deuterated alkyl group may be, for example, trideuteromethyl.
  • the deuterated aryl group may be, for example, a penta-deuterated phenyl group
  • the present application provides a host material composition comprising a first compound and a second compound.
  • the structure of the first compound is shown in formula 1, that is, the first compound is selected from at least one compound having the structure shown in formula 1:
  • Ar is selected from substituted or unsubstituted aryl groups with 6-30 carbon atoms and substituted or unsubstituted heteroaryl groups with 3-30 carbon atoms;
  • Het is selected from 2-20 carbon atoms substituted or unsubstituted nitrogen-containing heteroarylene, and the nitrogen-containing heteroarylene contains at least 2 N atoms;
  • Ar 1 and Ar 2 are each independently selected from hydrogen, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 20 carbon atoms;
  • R 1 , R 2 , R 3 , R 4 and R 5 are the same or different, and are each independently selected from deuterium, fluorine, cyano, alkyl groups having 1 to 10 carbon atoms, and alkyl groups having 6 to 20 carbon atoms.
  • n 1 represents the number of R 1 , selected from 0, 1, 2, 3 or 4, when n 1 is greater than 1, any two R 1 are the same or different, optionally, two adjacent R 1 form a ring ;
  • n 2 represents the number of R 2 , selected from 0, 1 or 2, when n 2 is 2, any two R 2 are the same or different, optionally, two adjacent R 2 form a ring;
  • n 3 Represents the number of R 3 , selected from 0, 1, 2, 3 or 4, when n 3 is greater than 1, any two R 3 are the same or different, optionally, two adjacent R 3 form a ring;
  • n 4 represents the number of R 4 , selected from 0, 1 or 2, when n 4 is greater than 1, any two R 4 are the same or different;
  • n 5 represents the number of R 5 , selected from 0, 1, 2, 3 Or 4, when n 5 is greater than 1, any two R 5 are the same or different, optionally, two adjacent R 5 form a ring;
  • the substituents in Het, Ar, Ar 1 and Ar 2 are each independently selected from deuterium, halogen group, cyano group, heteroaryl group with 3-15 carbon atoms, aryl group with 6-15 carbon atoms group, trialkylsilyl group with 3-12 carbon atoms, alkyl group with 1-10 carbon atoms, deuterated alkyl group with 1-10 carbon atoms, haloalkyl group with 1-10 carbon atoms or a cycloalkyl group with 3 to 10 carbon atoms;
  • the dibenzofuranyl group is directly connected to the nitrogen atom of the indolocarbazole group at the 2nd position, and under the premise of effectively maintaining the higher triplet energy level of the compound, the In order to improve the energy transfer efficiency to the guest molecule, the luminous efficiency of the device can be effectively improved; and the substitution of aryl or heteroaryl at the 4th position of the dibenzofuran group can not only improve the material carrier mobility and The energy transfer efficiency can also effectively improve the stability of the molecular structure. It should be noted that the No. 2 site and No. 4 site in the dibenzofuranyl group are:
  • the first compound may have the structure shown in any one of formula A-formula F:
  • two adjacent R 1s form a benzene ring.
  • two adjacent R 2 form a benzene ring.
  • two adjacent R 3 form a benzene ring.
  • n 1 , n 2 and n 3 are all zero.
  • Ar is selected from a substituted or unsubstituted aryl group with 6-20 carbon atoms and a substituted or unsubstituted heteroaryl group with 5-20 carbon atoms.
  • Ar may be selected from substituted or unsubstituted aryl groups having 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 carbon atoms, or A substituted or unsubstituted heteroaryl group selected from the group consisting of 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 carbon atoms.
  • Ar is selected from a substituted or unsubstituted aryl group with 6-14 carbon atoms and a substituted or unsubstituted heteroaryl group with 5-12 carbon atoms.
  • Ar is selected from substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted anthracenyl, substituted or unsubstituted or unsubstituted phenanthryl, substituted or unsubstituted fluorenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted dibenzothienyl, substituted or unsubstituted Carbazolyl.
  • the substituent in Ar is selected from deuterium, fluorine, cyano, alkyl with 1 to 5 carbon atoms, aryl with 6 to 12 carbon atoms, and heteroaryl with 5 to 12 carbon atoms group, a trialkylsilyl group having 3 to 6 carbon atoms, a deuterated alkyl group having 1 to 5 carbon atoms, and a haloalkyl group having 1 to 5 carbon atoms.
  • the substituent in Ar is selected from deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl, trifluoromethyl, trimethylsilyl, trideuterium Methyl, phenyl, naphthyl, biphenyl or carbazolyl.
  • Ar is selected from a substituted or unsubstituted group V 1 , and the unsubstituted group V 1 is selected from the group consisting of:
  • the substituted group V 1 has one or more substituents, and the substituents in the substituted group V 1 are independently selected from deuterium, fluorine, cyano, methyl, ethyl, n-propyl , isopropyl, tert-butyl, trifluoromethyl, trimethylsilyl, trideuteromethyl, phenyl, naphthyl, biphenyl or carbazolyl; when the number of substituents is greater than 1, Each substituent is the same or different.
  • Ar is selected from the group consisting of:
  • the group Het is a trivalent heteroarylene group, and is specifically selected from the group consisting of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14 carbon atoms. , 15, 16, 17, 18, 19 or 20 substituted or unsubstituted nitrogen-containing heteroarylene, and the nitrogen-containing heteroarylene contains at least 2 N atoms.
  • Het is selected from a nitrogen-containing heteroarylene group having 3 to 12 carbon atoms, and the nitrogen-containing heteroarylene group contains at least 2 N atoms.
  • the number of nitrogen atoms in the nitrogen-containing heteroarylene group is 2 or 3.
  • Het is selected from the group consisting of triazinylene, pyrimidylene, quinoxalinyl, quinazoline, and groups shown in formula a, formula b, and formula c:
  • Ar 1 is selected from hydrogen, substituted or unsubstituted aryl groups with 6-30 carbon atoms, and substituted or unsubstituted heteroaryl groups with 3-20 carbon atoms;
  • Ar 2 is selected from carbon atoms It is a substituted or unsubstituted aryl group of 6-30, and a substituted or unsubstituted heteroaryl group of 3-20 carbon atoms.
  • Ar 1 and Ar 2 are each independently selected from hydrogen, a substituted or unsubstituted aryl group with 6-20 carbon atoms, and a substituted or unsubstituted heteroaryl group with 5-20 carbon atoms.
  • Ar 1 and Ar 2 are each independently selected from hydrogen, substituted with 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 carbon atoms, or Unsubstituted aryl, or substituted or unsubstituted selected from 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 carbon atoms Heteroaryl.
  • the substituents in Ar 1 and Ar 2 are independently selected from deuterium, fluorine, cyano, alkyl with 1 to 5 carbon atoms, aryl with 6 to 12 carbon atoms or carbon atoms is a heteroaryl group of 5-12.
  • the substituents in Ar 1 and Ar 2 are selected from deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl, phenyl, naphthyl, biphenyl or Carbazolyl.
  • Ar and Ar are independently selected from hydrogen , substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, Substituted or unsubstituted fluorenyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted dibenzothienyl.
  • Ar 1 and Ar 2 are each independently selected from hydrogen, a substituted or unsubstituted group V 2 , and the unsubstituted group V 2 is selected from the group consisting of:
  • the substituted group V 2 has one or more substituents, and the substituents in the substituted group V 2 are independently selected from deuterium, fluorine, cyano, methyl, ethyl, n-propyl group, isopropyl group, tert-butyl group, phenyl group, naphthyl group, biphenyl group or carbazolyl group; when the number of substituent groups is greater than 1, each substituent group is the same or different.
  • Ar 1 and Ar 2 are each independently selected from the group consisting of hydrogen or the following groups:
  • first compound optionally, is selected from the group consisting of:
  • the first compound is a compound of the structure represented by formula A. That is, in the host material composition, the first compound is selected from at least one compound having the structure represented by formula A.
  • the application of the host material composition to an organic electroluminescent device can further improve the service life of the device.
  • the first compound is selected from the group consisting of:
  • the structure of the second compound is shown in formula 2, that is, the second compound is selected from at least one compound having the structure shown in formula 2:
  • Ar 3 and Ar 4 are each independently selected from substituted or unsubstituted aryl groups with 6-30 carbon atoms and substituted or unsubstituted heteroaryl groups with 8-25 carbon atoms;
  • the substituents in Ar 3 and Ar 4 are each independently selected from deuterium, halogen group, cyano group, heteroaryl group with 3 to 15 carbon atoms, aryl group with 6 to 15 carbon atoms, Deuterated aryl group of 6-12, trialkylsilyl group of carbon number of 3-7, alkyl group of carbon number of 1-10, haloalkyl group of carbon number of 1-10 or carbon number of 3 ⁇ 10 cycloalkyl;
  • R a and R b are the same or different, and are independently selected from deuterium, halogen group, cyano group, alkyl group having 1 to 10 carbon atoms, cycloalkyl group having 3 to 10 carbon atoms, is an aryl group of 6 to 20 or a heteroaryl group of 5 to 15 carbon atoms;
  • n a represents the number of R a , selected from 0, 1, 2, 3, 4, 5, 6 or 7, when n a is greater than 1, any two R a are the same or different, optionally, adjacent Two R a form a ring;
  • n b represents the number of R b , selected from 0, 1, 2, 3, 4, 5, 6 or 7, when n b is greater than 1, any two R b are the same or different, Optionally, two adjacent R bs form a ring.
  • R a and R b are the same or different, and are independently selected from deuterium, fluorine, cyano, alkyl with 1 to 4 carbon atoms, cycloalkyl with 5 to 8 carbon atoms, carbon An aryl group having 6 to 18 atoms or a heteroaryl group having 5 to 12 carbon atoms.
  • R a and R b are each independently selected from deuterium, fluorine, methyl, tert-butyl, phenyl, naphthyl, biphenyl, terphenyl, dibenzofuranyl, dibenzothienyl , carbazolyl, cyclopentyl or cyclohexyl.
  • Ar 3 and Ar 4 are each independently selected from a substituted or unsubstituted aryl group having 6-25 carbon atoms and a substituted or unsubstituted heteroaryl group having 8-24 carbon atoms.
  • Ar 3 and Ar 4 can be independently selected from the group consisting of 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 substituted or unsubstituted aryl groups, or selected from the group consisting of 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 , 22, 23, 24 substituted or unsubstituted heteroaryl.
  • Ar 3 and Ar 4 are each independently selected from a substituted or unsubstituted aryl group with 6-20 carbon atoms and a substituted or unsubstituted heteroaryl group with 12-18 carbon atoms.
  • Ar 3 and Ar 4 may be independently selected from the substitution or An unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group selected from the group consisting of 12, 13, 14, 15, 16, 17 or 18 carbon atoms.
  • Ar and Ar are independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted Unsubstituted fluorenyl, substituted or unsubstituted phenanthrenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted diphenyl And thienyl.
  • the substituents in Ar 3 and Ar 4 are each independently selected from deuterium, fluorine, cyano, alkyl with 1 to 4 carbon atoms, aryl with 6 to 12 carbon atoms, is 5-12 heteroaryl or penta-deuterated phenyl.
  • the substituents in Ar 3 and Ar 4 are selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, phenyl, naphthyl, biphenyl, carbazolyl, Pentadeuterated phenyl, dibenzofuranyl or dibenzothienyl.
  • Ar and Ar are independently selected from substituted or unsubstituted group Z, and unsubstituted group Z is selected from the group consisting of:
  • the substituted group Z has one or more substituents, and the substituents are independently selected from deuterium, fluorine, cyano, penta-deuterated phenyl, phenyl, naphthyl, biphenyl, carbazolyl, Dibenzofuranyl, methyl, isopropyl, tert-butyl; when the number of substituents is greater than 1, the substituents are the same or different.
  • Ar 3 and Ar 4 are independently selected from the group consisting of the following groups:
  • Ar 3 and Ar 4 are independently selected from the group consisting of the following groups:
  • the second compound can be specifically selected from at least one of the compounds with the following structure:
  • the structure of the second compound is shown in formula 2-3-3, wherein R a and R b are independently selected from deuterium, fluorine, methyl, tert-butyl or phenyl ; Ar 3 and Ar 4 are independently selected from substituted or unsubstituted aryl groups with 6-18 carbon atoms and substituted or unsubstituted heteroaryl groups with 12-15 carbon atoms.
  • the second compound is selected from the group consisting of:
  • the host material composition is a mixture of the first compound and the second compound.
  • the mixture can be formed by mechanically stirring the first compound and the second compound to homogenize.
  • the present application does not specifically limit the relative contents of the two types of compounds in the host material composition, which can be selected according to the specific application of the organic electroluminescent device.
  • the content of the first compound may be 20-80 wt %
  • the content of the second compound may be 20-80 wt %.
  • the mass ratio of the first compound to the second compound may be 20:80, 25:75, 30:70, 35:65, 40:60, 45:65, 50: 50, 55:45, 60:40, 65:35, 70:30, 75:25, 80:20, etc.
  • the content of the first compound is 30-60 wt %, and the second compound The content of the host material is 40-70% by weight.
  • the device when the host material composition is applied to an organic electroluminescent device, the device can have both high luminous efficiency and long service life, and is especially suitable as an electronic device. display device. More preferably, based on the total weight of the host material composition, the content of the first compound is 35-50 wt %, and the content of the second compound is 50-65 wt %.
  • the present application does not specifically limit the synthesis method of the first compound provided, and those skilled in the art can determine a suitable synthesis method according to the preparation method provided in the Synthesis Example section below.
  • the Synthesis Examples section of the present application exemplarily provides a method for preparing the first compound, and the raw materials used can be obtained commercially or by methods well known in the art.
  • Those skilled in the art can obtain the first compound provided in the present application according to these exemplary preparation methods, and all specific preparation methods for preparing the compound are not described in detail here, which should not be construed as a limitation on the present application by those skilled in the art.
  • the second compound can be obtained commercially, or obtained by a method well known in the art, and details are not described in this application.
  • a second aspect of the present application provides an organic electroluminescent device, as shown in FIG. 1 , comprising an anode 100 , a cathode 200 , and a functional layer 300 disposed between the anode 100 and the cathode 200 , in the functional layer 300
  • An organic light-emitting layer 330 is included, wherein the organic light-emitting layer 330 includes the host material composition described in one aspect of the present application.
  • the organic electroluminescent device may include an anode 100 , a hole transport layer 320 , an organic light emitting layer 330 , an electron transport layer 340 and a cathode 200 which are stacked in sequence.
  • the organic light-emitting layer 330 includes a host material and a guest material, wherein the host material is formed of the host material of the present application.
  • the present application does not specifically limit the guest material, and can be selected with reference to the prior art.
  • the guest material may be a phosphorescent compound or a fluorescent compound.
  • the phosphorescent compound may be a compound containing copper, molybdenum, tungsten, rhenium, ruthenium, osmium, rhodium, iridium, palladium, platinum, silver, gold or europium, for example selected from iridium(III) organometallic complexes , Pt (II) organometallic complexes, Cu complexes, gold complexes, rhenium (III) complexes, osmium (II) complexes, etc.
  • the fluorescent material can be selected from compounds having a condensed aryl ring or derivatives thereof, compounds having a heteroaryl ring or derivatives thereof, aromatic amine derivatives, and the like.
  • the guest material may be Ir(ppy) 3 .
  • the anode 100 includes an anode material, which is preferably a material with a large work function that facilitates hole injection into the functional layer.
  • anode materials include: metals such as nickel, platinum, 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); Combined metals and oxides such as ZnO:Al or SnO2 :Sb; or conducting polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene ](PEDT), polypyrrole and polyaniline, but not limited thereto. It is preferable to include a transparent electrode comprising indium tin oxide (ITO) as an anode.
  • ITO indium tin oxide
  • the material of the hole transport layer 320 may be selected from phthalocyanine derivatives, naphthalocyanine derivatives, porphyrin derivatives, benzidine-type triarylamine, styrylamine-type triarylamine, diamine-type triarylamine or Other types of materials can be selected by those skilled in the art with reference to the prior art.
  • the material of the hole transport layer is selected from the group consisting of the following compounds:
  • the hole transport layer 320 may have a one-layer or two-layer structure.
  • the hole transport layer includes a first hole transport layer 321 and a second hole transport layer 322 arranged in layers, wherein the first hole transport layer 321 is opposite to the The second hole transport layer 322 is closer to the anode 100 .
  • the electron transport layer 340 may be a single-layer structure or a multi-layer structure, which may include one or more electron transport materials, and the electron transport materials may generally include metal complexes and/or nitrogen-containing heterocycles Derivatives, wherein, the metal complex material can be selected from LiQ, Alq 3 , Bepq 2 , etc.; the nitrogen-containing heterocyclic derivative can be an aromatic ring with a nitrogen-containing six-membered ring or five-membered ring skeleton , Condensed aromatic ring compounds with nitrogen-containing six-membered ring or five-membered ring skeleton, etc., specific examples include, but are not limited to, 1,10-phenanthroline compounds such as BCP, Bphen, NBphen, DBimiBphen, BimiBphen, etc., or the structure is as follows Anthracene-, triazine- or pyrimidine-containing compounds are shown.
  • the metal complex material can be selected from LiQ, Alq 3 , Bepq 2
  • the cathode material used in the cathode 200 may be a material with small work function that facilitates electron injection into the functional layer.
  • specific examples of cathode materials include, but are not limited to, metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or alloys thereof; or multi-layer materials such as LiF/Al , Liq/Al, LiO 2 /Al, LiF/Ca, LiF/Al and BaF 2 /Ca.
  • Metal electrodes containing magnesium and silver are preferred as cathodes.
  • a hole injection layer 310 is further disposed between the anode 100 and the first hole transport layer 321 to enhance the capability of injecting holes into the first hole transport layer 321 .
  • the hole injection layer 310 can be selected from benzidine derivatives, starburst arylamine compounds, phthalocyanine derivatives or other materials, which are not specifically limited in this application.
  • the hole injection layer 310 may be selected from the group consisting of the following compounds:
  • an electron injection layer 350 is further disposed between the cathode 200 and the electron transport layer 340 to enhance the capability of injecting electrons into the electron transport layer 340 .
  • the electron injection layer 350 may include inorganic materials such as alkali metal sulfide and alkali metal halide, or may include a complex compound of alkali metal and organic matter.
  • the material of the electron injection layer 350 may be selected from one or more of LiF, NaCl, CsF, Li 2 O, BaO, LiQ, Cs 2 CO 3 , Na, Li, Ca, Al, and Yb.
  • the material of the electron injection layer 350 may include LiQ or Yb.
  • the organic electroluminescent device is a green light device.
  • a third aspect of the present application provides an electronic device, including the organic electroluminescent device described in the second aspect of the present application.
  • the electronic device 400 includes the above-mentioned organic electroluminescent device, and the electronic device 400 may be, for example, a display device, a lighting device, an optical communication device or other types of electronic devices, such as but not limited to a computer screen, Mobile phone screens, TV sets, electronic paper, emergency lighting, optical modules, etc.
  • the intermediate SM-X was synthesized with reference to the synthetic method of SM-1. The difference was that the raw material M was used instead of 4-tert-butylbromobenzene. The main raw materials used, the corresponding synthetic compounds and their yields were shown in Table 6.
  • Anodes were prepared by the following process: ITO thickness was The substrate (manufactured by Corning) was cut into a size of 40mm x 40mm x 0.7mm, and a photolithography process was used to prepare it into an experimental substrate with cathode, anode and insulating layer patterns. UV ozone and O 2 : N 2 plasma were used for surface treatment. Treatment to increase the work function of the anode (experimental substrate) and to remove scum.
  • F4-TCNQ was vacuum evaporated on the experimental substrate (anode) to form a thickness of The hole injection layer (HIL) of , and NPB is evaporated on the hole injection layer to form a thickness of the first hole transport layer.
  • HIL hole injection layer
  • PAPB was vacuum evaporated on the first hole transport layer to form a thickness of the second hole transport layer.
  • the host material composition GH-1-1 and Ir(ppy) 3 were co-evaporated in a ratio of 100%:10% (evaporation rate) to form a thickness of green organic light-emitting layer (EML).
  • ET-9 and LiQ were mixed at a weight ratio of 1:1 and evaporated to form Thick electron transport layer (ETL), Yb was evaporated on the electron transport layer to form a thickness of The electron injection layer (EIL) of the the cathode.
  • ETL Thick electron transport layer
  • EIL electron injection layer
  • the thickness of the vapor deposition on the above cathode is The CP-05 is formed to form an organic capping layer (CPL), thereby completing the fabrication of the organic electroluminescent device.
  • CPL organic capping layer
  • An organic electroluminescent device was fabricated by the same method as in Example 1, except that the host material composition GH-1-1 was replaced by the remaining GH-X-Y-based host material compositions shown in Table 9 below, respectively, when the light-emitting layer was formed .
  • An organic electroluminescent device was fabricated by the same method as in Example 1, except that the GH-X-Y-based host material composition shown in Table 9 below was used instead of the host material composition GH-1-1 in forming the organic light-emitting layer.
  • the used host material compositions GH-X-Y were obtained by mixing two compounds respectively, and the specific compositions are shown in Table 9, wherein the mass ratio refers to the compounds shown in the first column of the table and the latter The mass ratios of the compounds shown in the columns.
  • Table 9 GH-1-1 is composed of compound A6 and compound 4 mixed in a mass ratio of 50:50; the main material composition GH-D1 Take -1 as an example, with reference to Table 6, it can be seen that GH-D1-1 is prepared by mixing compound D1 and compound 4 in a mass ratio of 35:65.
  • Examples 1-59 and Comparative Examples 1-4 adopted the host material composition containing biscarbazole compounds, and the main difference was reflected in the difference of the first compound in the composition. Combined with the results shown in Table 9, it can be seen that in the combination When the proportions of the two types of compounds are equivalent, compared with Comparative Examples 1-4, the lifespan of the organic electroluminescent devices of Examples 1-59 is increased by at least 14%, the current efficiency is increased by at least 13.8%, and the power efficiency is increased by at least 14%. At least 17.3% higher; and maintain a lower driving voltage. It can be seen that the organic electroluminescent device using the host material of the present application shows higher luminous efficiency and longer service life, and also has lower driving voltage.

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Abstract

本申请属于有机发光材料领域，具体涉及一种主体材料组合物和有机电致发光器件及电子装置。所述主体材料组合物包含第一化合物和第二化合物，所述第一化合物的结构如式1所示，所述第二化合物的结构如式2所示，所述主体材料组合物应用到有机电致发光器件中，能够有效提高有机电致发光器件的性能。

Description

主体材料组合物和有机电致发光器件及电子装置
相关申请的交叉引用
本申请要求于2021年4月1日递交的申请号为202110353791.6的中国专利申请，以及2021年6月9日递交的申请号为202110643542.0的中国专利申请的优先权，在此引用上述中国专利申请的内容全文以作为本申请的一部分。
技术领域
本申请属于有机电致发光器件技术领域，具体提供一种主体材料组合物和有机电致发光器件及电子装置。
背景技术
随着电子技术的发展和材料科学的进步，用于实现电致发光或者光电转化的电子元器件的应用范围越来越广泛。该类电子元器件通常包括相对设置的阴极和阳极，以及设置于阴极和阳极之间的功能层。该功能层由多层有机或者无机膜层组成，且一般包括能量转化层、位于能量转化层与阳极之间的空穴传输层、位于能量转化层与阴极之间的电子传输层。
以有机电致发光器件为例，其一般包括依次层叠设置的阳极、空穴传输层、作为能量转化层的有机发光层、电子传输层和阴极。当阴阳两极施加电压时，两电极产生电场，在电场的作用下，阴极侧的电子向电致发光层移动，阳极侧的空穴也向发光层移动，电子和空穴在电致发光层结合形成处于激发态的激子，激子向外释放能量，进而使得有机发光层对外发光。
目前，有机电致发光器件的使用过程中仍存在性能较差的问题，例如存在驱动电压过高、发光效率过低或者寿命较短等问题，这些都影响了有机电致发光器件的使用领域，因此，仍有必要对该领域进行进一步研究，以改善有机电致发光器件的性能。
发明内容
针对现有技术存在的上述问题，本申请的目的在于提供一种新的主体材料组合物和有机电致发光器件及电子装置。本申请的主体材料组合物可有效提高有机电致发光器件的性能。
第一方面，本申请提供一种主体材料组合物，该主体材料组合物包含第一化合物和第二化合物；所述第一化合物的结构如式1所示，所述第二化合物的结构如式2所示：
Figure PCTCN2022081284-appb-000001
式1中，Ar选自碳原子数为6～30的取代或未取代的芳基、碳原子数为3～30的取代或未取代的杂芳基；Het选自碳原子数为2～20的取代或未取代的含氮亚杂芳基，且所述含氮亚杂芳基中含有至少2个N原子；Ar 1和Ar 2各自独立地选自氢、碳原子数为6～30的取代或未取代的芳基、碳原子数为3～20的取代或未取代的杂芳基；
R 1、R 2、R 3、R 4和R 5相同或不同，且各自独立地选自氘、氟、氰基、碳原子数为1～10的烷基、碳原子数为6～20的芳基或碳原子数为3～30的杂芳基；
n 1表示R 1的个数，选自0、1、2、3或4，当n 1大于1时，任意两个R 1相同或不同，任选地，相邻 的两个R 1形成环；n 2表示R 2的个数，选自0、1或2，当n 2为2时，任意两个R 2相同或不同，任选地，相邻的两个R 2形成环；n 3表示R 3的个数，选自0、1、2、3或4，当n 3大于1时，任意两个R 3相同或不同，任选地，相邻的两个R 3形成环；n 4表示R 4的个数，选自0、1或2，当n 4大于1时，任意两个R 4相同或不同；n 5表示R 5的个数，选自0、1、2、3或4，当n 5大于1时，任意两个R 5相同或不同，任选地，相邻的两个R 5形成环；
所述Het、Ar、Ar 1和Ar 2中的取代基各自独立地选自氘、卤素基团、氰基、碳原子数为3～15的杂芳基、碳原子数为6～15的芳基、碳原子数为3～12的三烷基硅基、碳原子数为1～10的烷基、碳原子数为1-10的氘代烷基、碳原子数为1～10的卤代烷基或碳原子数为3～10的环烷基；
式2中，Ar 3和Ar 4各自独立地选自碳原子数为6～30的取代或未取代的芳基、碳原子数为8～25的取代或未取代的杂芳基；
Ar 3和Ar 4中的取代基各自独立地选自氘、卤素基团、氰基、碳原子数为3～15的杂芳基、碳原子数为6～15的芳基、碳原子数为6～12的氘代芳基、碳原子数为3～7的三烷基硅基、碳原子数为1～10的烷基、碳原子数为1～10的卤代烷基或碳原子数为3～10的环烷基；
R a和R b相同或不同，且各自独立地选自氘、卤素基团、氰基、碳原子数为1～10的烷基、碳原子数为3～10的环烷基、碳原子数为6～20的芳基或碳原子数为5～15的杂芳基；
n a表示R a的个数，选自0、1、2、3、4、5、6或7，当n a大于1时，任意两个R a相同或不同，任选地，相邻的两个R a形成环；n b表示R b的个数，选自0、1、2、3、4、5、6或7，当n b大于1时，任意两个R b相同或不同，任选地，相邻的两个R b形成环。
第二方面，本申请提供一种有机电致发光器件，其包括阳极、阴极，以及设置在所述阳极和阴极之间的功能层，所述功能层中包括有机发光层，其中，所述有机发光层包含本申请一方面所述的主体材料组合物。
第三方面，本申请提供一种电子装置，该电子装置包括本申请第二方面所述的有机电致发光器件。
在本申请中，将含有第一化合物和第二化合物的组合物作为主体材料应用到有机电致发光器件中，能有效改善有机电致发光器件的性能。一方面，所述第一化合物为具有缺电子的氮杂芳基基团—富电子的吲哚并咔唑基团—二苯并呋喃基相结合而形成的结构；缺电子氮杂芳基基团与富电子的吲哚并咔唑基团分别具有高的电子和空穴注入传输特性，使得材料分子结构具有双极性，适用于有机电致发光器件中的发光层；同时，二苯并呋喃基以2号位直接与吲哚并咔唑基团的氮原子相连，在有效维持化合物较高的三重态能级的前提下，提升了向客体分子的能量传输效率，可有效提升器件的发光效率；而在二苯并呋喃基的4号位进行芳基类或杂芳基类的取代，不仅可以提升材料载流子迁移率和能量传输效率，还能够有效提升分子结构的稳定性。另一方面，第一化合物作为电子传输型(ET-type)主体材料与作为空穴传输型(HT-type)主体材料的双咔唑类化合物(即第二化合物)具有较高的配伍性，在蒸镀过程中可基本保持相同的蒸镀速率，保证在蒸镀至基板时所形成的供体和受体材料的混合物比例几乎保持不变，在施加电压时，混合物形成激发复合体，避免发光区偏移，从而提高载流子的传输性能，在保证有机电致发光器件具有较低驱动电压的同时有效提高器件的发光效率和使用寿命。
本申请的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
图1是本申请一种实施方式的有机电致发光器件的结构示意图。
图2是本申请一种实施方式的电子装置的结构示意图。
附图标记说明
100、阳极；200、阴极；300、功能层；310、空穴注入层；320、空穴传输层；321、第一空穴传输层；322、第二空穴传输层；330、有机发光层；340、电子传输层；350、电子注入层；400、电子装置。
具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解地是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
本申请中，所采用的描述方式“各……独立地选自”与“……分别独立地为”和“……独立地选自”可以互换，均应做广义理解，其既可以是指在不同基团中，相同符号之间所表达的具体选项之间互相不影响，也可以表示在相同的基团中，相同符号之间所表达的具体选项之间互相不影响。举例来讲，“
Figure PCTCN2022081284-appb-000002
其中，各q独立地选自0、1、2或3，各R”独立地选自氢、氘、氟、氯”，其含义是：式Q-1表示苯环上有q个取代基R”，各个R”可以相同也可以不同，每个R”的选项之间互不影响；式Q-2表示联苯的每一个苯环上有q个取代基R”，两个苯环上的R”取代基的个数q可以相同或不同，各个R”可以相同也可以不同，每个R”的选项之间互不影响。
在本申请中，术语“任选”、“任选地”意味着随后所描述的事件或者环境可以但不必发生，该说明包括该事情或者环境发生或者不发生的场合。例如，“任选地，相邻的两个取代基形成环”意味着这两个取代基可以形成环但不是必须形成环，包括：两个相邻的取代基形成环的情景和两个相邻的取代基不形成环的情景。
在本申请中，“取代或未取代的”这样的术语是指，在该术语后面记载的官能团可以具有或不具有取代基(下文为了便于描述，将取代基统称为R c)。例如，“取代或未取代的芳基”是指具有取代基R c的芳基或者非取代的芳基。其中上述的取代基，即R c，例如可以为氘、卤素基团、氰基、杂芳基、芳基、氘代芳基、三烷基硅基、烷基、氘代烷基、卤代烷基、环烷基等。当同一个原子上连接有两个取代基R c时，这两个取代基R c可以独立地存在或者相互连接以与所述原子形成环；当官能团上存在两个相邻的取代基R c时，相邻的两个取代基R c可以独立地存在或者与其所连接的官能团稠合成环。
在本申请中，取代或未取代的官能团的碳原子数，指的是所有碳原子数。举例而言，若Ar选自碳原子数为12的取代的芳基，则芳基及其上的取代基的所有碳原子数为12。
在本申请中，芳基指的是衍生自芳香碳环的任选官能团或取代基。芳基可以是单环芳基(例如苯基)或多环芳基，换言之，芳基可以是单环芳基、稠环芳基、通过碳碳键共轭连接的两个或者更多个单环芳基、通过碳碳键共轭连接的单环芳基和稠环芳基、通过碳碳键共轭连接的两个或者更多个稠环芳基。即，除非另有说明，通过碳碳键共轭连接的两个或者更多个芳香基团也可以视为本申请的芳基。其中，稠环芳基例如可以包括双环稠合芳基(例如萘基)、三环稠合芳基(例如菲基、芴基、蒽基)等。芳基中不含有B、N、O、S、P、Se和Si等杂原子。需要说明地是，联苯基、三联苯基、9,9-二甲基芴基在本申请中均视为芳基。芳基的实例可以包括但不限于，苯基、萘基、芴基、蒽基、菲基、联苯基、三联苯基、苯并[9,10]菲基、芘基、苯并荧蒽基、
Figure PCTCN2022081284-appb-000003
基等。
在本申请中，取代的芳基可以是芳基中的一个或者两个以上的氢原子被诸如氘、卤素基团、氰基、芳基、氘代芳基、杂芳基、三烷基硅基、烷基、环烷基、氘代烷基、卤代烷基等基团取代。杂芳基取代的芳基的具体实例包括但不限于，二苯并呋喃基取代的苯基、二苯并噻吩取代的苯基、吡啶取代的苯基等。应当理解地是，取代的芳基的碳原子数，指的是芳基和芳基上的取代基的碳原子总数，例如碳原子数为18的取代的芳基，指的是芳基及其上的取代基的总碳原子数为18。
在本申请中，杂芳基是指环中包含至少一个杂原子的一价芳香环或其衍生物，杂原子可以是B、O、 N、P、Si、Se和S中的至少一种。杂芳基可以是单环杂芳基或多环杂芳基，换言之，杂芳基可以是单个芳香环体系，也可以是通过碳碳键共轭连接的多个芳香环体系，且任一芳香环体系为一个芳香单环或者一个芳香稠环。示例地，杂芳基可以包括噻吩基、呋喃基、吡咯基、咪唑基、噻唑基、噁唑基、噁二唑基、三唑基、吡啶基、联吡啶基、嘧啶基、三嗪基、吖啶基、哒嗪基、吡嗪基、喹啉基、喹唑啉基、喹喔啉基、吩噁嗪基、酞嗪基、吡啶并嘧啶基、吡啶并吡嗪基、吡嗪并吡嗪基、异喹啉基、吲哚基、咔唑基、苯并噁唑基、苯并咪唑基、苯并噻唑基、苯并咔唑基、苯并噻吩基、二苯并噻吩基、噻吩并噻吩基、苯并呋喃基、菲咯啉基、异噁唑基、噻二唑基、吩噻嗪基、硅芴基、二苯并呋喃基以及N-苯基咔唑基、N-吡啶基咔唑基、N-甲基咔唑基等，而不限于此。其中，噻吩基、呋喃基、菲咯啉基等为单个芳香环体系类型的杂芳基，N-苯基咔唑基、N-吡啶基为通过碳碳键共轭连接的多环体系类型的杂芳基。本申请中，涉及的亚杂芳基是指杂芳基进一步失去一个或多个氢原子所形成的二价或更高价的基团。
在本申请中，取代的杂芳基可以是杂芳基中的一个或者两个以上的氢原子被诸如氘、卤素基团、氰基、芳基、杂芳基、三烷基硅基、烷基、环烷基、氘代烷基、卤代烷基等基团取代。芳基取代的杂芳基的具体实例包括但不限于，苯基取代的二苯并呋喃基、苯基取代的二苯并噻吩基、苯基取代的吡啶基等。应当理解地是，取代的杂芳基的碳原子数，指的是杂芳基和杂芳基上的取代基的碳原子总数。
本申请中，不定位连接键是指从环体系中伸出的单键
Figure PCTCN2022081284-appb-000004
其表示该连接键的一端可以连接该键所贯穿的环体系中的任意位置，另一端连接化合物分子其余部分。
举例而言，如下式(f)中所示地，式(f)所表示的萘基通过两个贯穿双环的不定位连接键与分子其他位置连接，其所表示的含义，包括如式(f-1)～式(f-10)所示出的任一可能的连接方式。
Figure PCTCN2022081284-appb-000005
再举例而言，如下式(X')中所示地，式(X')所表示的菲基通过一个从一侧苯环中间伸出的不定位连接键与分子其他位置连接，其所表示的含义，包括如式(X'-1)～式(X'-4)所示出的任一可能的连接方式。
Figure PCTCN2022081284-appb-000006
本申请中的不定位取代基，指的是通过一个从环体系中央伸出的单键连接的取代基，其表示该取代基可以连接在该环体系中的任何可能位置。例如，如下式(Y)中所示地，式(Y)所表示的取代基R'通过一个不定位连接键与喹啉环连接，其所表示的含义，包括如式(Y-1)～式(Y-7)所示出的任一可能的连接方式。
Figure PCTCN2022081284-appb-000007
在本申请中，碳原子数为1～10的烷基可以包括碳原子数为1～10的直链烷基和碳原子数为3～10的支链烷基，碳原子数可以为1、2、3、4、5、6、7、8、9、10。碳原子数为1～10的烷基的具体实例包括但不限于，甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、正戊基、异戊基、新戊基、环戊基、正己基、庚基、正辛基、2-乙基己基、壬基、癸基、3,7-二甲基辛基等。
在本申请中，卤素基团可以包括氟、碘、溴、氯等。
在本申请中，作为取代基的芳基的碳原子数可以为6～15，碳原子数具体如为6、10、12、13、14等，芳基的具体实例包括但不限于，苯基、萘基、联苯基、芴基、菲基、蒽基等。
在本申请中，作为取代基的杂芳基的碳原子数可以为3～15，碳原子数具体例如为3、4、5、8、9、10、12、13、14、15等，杂芳基的具体实例包括但不限于，吡啶基、喹啉基、二苯并呋喃基、二苯并噻吩基、咔唑基等。
在本申请中，作为取代基的三烷基硅基的碳原子数可以为3～12、3～6、3～7等，例如为3、6、7等。三烷基硅基的具体实例包括但不限于，三甲基硅基、乙基二甲基硅基、三乙基硅基等。
在本申请中，作为取代基的环烷基的碳原子数可以为3～10，优选为5～10，更优选为5～8。环烷基的具体实例包括但不限于，环戊基、环己基、金刚烷基等。
在本申请中，卤代烷基例如可以为三氟甲基。氘代烷基例如可以为三氘甲基。
在本申请中，氘代芳基例如可以为五氘代苯基
Figure PCTCN2022081284-appb-000008
第一方面，本申请提供一种主体材料组合物，包含第一化合物和第二化合物。
本申请中，所述第一化合物的结构如式1所示，即，所述第一化合物选自具有式1所示结构的化合物中的至少一种：
Figure PCTCN2022081284-appb-000009
式1中，Ar选自碳原子数为6～30的取代或未取代的芳基、碳原子数为3～30的取代或未取代的杂芳基；Het选自碳原子数为2～20的取代或未取代的含氮亚杂芳基，且所述含氮亚杂芳基中含有至少2个N原子；
Ar 1和Ar 2各自独立地选自氢、碳原子数为6～30的取代或未取代的芳基、碳原子数为3～20的取代或未取代的杂芳基；
R 1、R 2、R 3、R 4和R 5相同或不同，且各自独立地选自氘、氟、氰基、碳原子数为1～10的烷基、碳原 子数为6～20的芳基或碳原子数为3～30的杂芳基；
n 1表示R 1的个数，选自0、1、2、3或4，当n 1大于1时，任意两个R 1相同或不同，任选地，相邻的两个R 1形成环；n 2表示R 2的个数，选自0、1或2，当n 2为2时，任意两个R 2相同或不同，任选地，相邻的两个R 2形成环；n 3表示R 3的个数，选自0、1、2、3或4，当n 3大于1时，任意两个R 3相同或不同，任选地，相邻的两个R 3形成环；n 4表示R 4的个数，选自0、1或2，当n 4大于1时，任意两个R 4相同或不同；n 5表示R 5的个数，选自0、1、2、3或4，当n 5大于1时，任意两个R 5相同或不同，任选地，相邻的两个R 5形成环；
所述Het、Ar、Ar 1和Ar 2中的取代基各自独立地选自氘、卤素基团、氰基、碳原子数为3～15的杂芳基、碳原子数为6～15的芳基、碳原子数为3～12的三烷基硅基、碳原子数为1～10的烷基、碳原子数为1-10的氘代烷基、碳原子数为1～10的卤代烷基或碳原子数为3～10的环烷基；
如上所述，所述第一化合物中，二苯并呋喃基以2号位直接与吲哚并咔唑基团的氮原子相连，在有效维持化合物较高的三重态能级的前提下，提升了向客体分子的能量传输效率，可有效提升器件的发光效率；而在二苯并呋喃基的4号位进行芳基类或杂芳基类的取代，不仅可以提升材料载流子迁移率和能量传输效率，还可以有效提升分子结构的稳定性。需要说明地是，二苯并呋喃基中的2号位点和4号位点为：
Figure PCTCN2022081284-appb-000010
本申请中，所述第一化合物可以具有式A-式F中任意一项所示的结构：
Figure PCTCN2022081284-appb-000011
可选地，所述第一化合物中，相邻的两个R 1形成苯环。
可选地，所述第一化合物中，相邻的两个R 2形成苯环。
可选地，所述第一化合物中，相邻的两个R 3形成苯环。
在一种实施方式中，n 1、n 2和n 3均为0。
可选地，Ar选自碳原子数为6～20的取代或未取代的芳基、碳原子数为5～20的取代或未取代的杂芳基。具体地，Ar可以选自碳原子数为6、7、8、9、10、11、12、13、14、15、16、17、18、19、20的取代或未取代的芳基，或者选自碳原子数为5、6、7、8、9、10、11、12、13、14、15、16、17、18、19、20的取代或未取代的杂芳基。
进一步可选地，Ar选自碳原子数为6～14的取代或未取代的芳基、碳原子数为5～12的取代或未取代的杂芳基。
可选地，Ar选自取代或未取代的苯基、取代或未取代的萘基、取代或未取代的联苯基、取代或未取代的三联苯基、取代或未取代的蒽基、取代或未取代的菲基、取代或未取代的芴基、取代或未取代的吡啶基、取代或未取代的二苯并呋喃基、取代或未取代的二苯并噻吩基、取代或未取代的咔唑基。
可选地，Ar中的取代基选自氘、氟、氰基、碳原子数为1～5的烷基、碳原子数为6～12的芳基、碳原子数为5～12的杂芳基、碳原子数为3～6的三烷基硅基、碳原子数为1～5的氘代烷基、碳原子数为1～5的卤代烷基。
可选地，Ar中的取代基选自氘、氟、氰基、甲基、乙基、正丙基、异丙基、叔丁基、三氟甲基、三甲基硅基、三氘代甲基、苯基、萘基、联苯基或咔唑基。
按照一种实施方式，Ar选自取代或未取代的基团V 1，未取代的基团V 1选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000012
其中，
Figure PCTCN2022081284-appb-000013
表示化学键；取代的基团V 1中具有一个或两个以上取代基，取代的基团V 1中的取代基各自独立地选自氘、氟、氰基、甲基、乙基、正丙基、异丙基、叔丁基、三氟甲基、三甲基硅基、三氘代甲基、苯基、萘基、联苯基或咔唑基；当取代基的个数大于1时，各取代基相同或不同。
可选地，Ar选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000014
所述第一化合物中，基团Het为三价亚杂芳基，具体选自碳原子数为2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、18、19或20的取代或未取代的含氮亚杂芳基，且所述含氮亚杂芳基中含有至少2个N原子。
可选地，Het选自碳原子数为3～12的含氮亚杂芳基，且含氮亚杂芳基中含有至少2个N原子。
可选地，所述含氮亚杂芳基中的氮原子数为2或3。
可选地，Het选自亚三嗪基、亚嘧啶基、亚喹喔啉基、亚喹唑啉基，以及式a、式b、式c所示基团所 组成的组：
Figure PCTCN2022081284-appb-000015
可选地，Ar 1选自氢、碳原子数为6～30的取代或未取代的芳基、碳原子数为3～20的取代或未取代的杂芳基；Ar 2选自碳原子数为6～30的取代或未取代的芳基、碳原子数为3～20的取代或未取代的杂芳基。
可选地，Ar 1和Ar 2分别独立地选自氢、碳原子数为6～20的取代或未取代的芳基、碳原子数为5～20的取代或未取代的杂芳基。例如，Ar 1和Ar 2分别独立地选自氢、碳原子数为6、7、8、9、10、11、12、13、14、15、16、17、18、19或20的取代或未取代的芳基，或者选自碳原子数为5、6、7、8、9、10、11、12、13、14、15、16、17、18、19或20的取代或未取代的杂芳基。
可选地，Ar 1和Ar 2中的取代基分别独立地选自氘、氟、氰基、碳原子数为1～5的烷基、碳原子数为6～12的芳基或碳原子数为5～12的杂芳基。
可选地，Ar 1和Ar 2中的取代基选自氘、氟、氰基、甲基、乙基、正丙基、异丙基、叔丁基、苯基、萘基、联苯基或咔唑基。
可选地，Ar 1和Ar 2分别独立地选自氢、取代或未取代的苯基、取代或未取代的萘基、取代或未取代的联苯基、取代或未取代的三联苯基、取代或未取代的芴基、取代或未取代的咔唑基、取代或未取代的二苯并呋喃基、取代或未取代的二苯并噻吩基。
按照一种实施方式，Ar 1和Ar 2分别独立地选自氢、取代或未取代的基团V 2，未取代的基团V 2选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000016
其中，
Figure PCTCN2022081284-appb-000017
表示化学键；取代的基团V 2中具有一个或两个以上的取代基，取代的基团V 2中的取代基各自独立地选自氘、氟、氰基、甲基、乙基、正丙基、异丙基、叔丁基、苯基、萘基、联苯基或咔唑基；当取代基的个数大于1时，各取代基相同或不同。
可选地，Ar 1和Ar 2分别独立地选自氢或者以下基团组成的组：
Figure PCTCN2022081284-appb-000018
所述第一化合物中，可选地，
Figure PCTCN2022081284-appb-000019
选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000020
进一步可选地，
Figure PCTCN2022081284-appb-000021
选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000022
Figure PCTCN2022081284-appb-000023
按照一种优选的实施方式，所述第一化合物为式A所示结构的化合物。即，所述主体材料组合物中，第一化合物选自具有式A所示结构的化合物中的至少一种。这种情况下，所述主体材料组合物应用到有机电致发光器件中能进一步提高器件的使用寿命。
可选地，所述第一化合物选自以下化合物所组成的组：
Figure PCTCN2022081284-appb-000024
Figure PCTCN2022081284-appb-000025
Figure PCTCN2022081284-appb-000026
Figure PCTCN2022081284-appb-000027
Figure PCTCN2022081284-appb-000028
Figure PCTCN2022081284-appb-000029
Figure PCTCN2022081284-appb-000030
本申请中，所述第二化合物的结构如式2所示，即，所述第二化合物选自具有式2所示结构的化合物中的至少一种：
Figure PCTCN2022081284-appb-000031
其中，Ar 3和Ar 4各自独立地选自碳原子数为6～30的取代或未取代的芳基、碳原子数为8～25的取代或未取代的杂芳基；
Ar 3和Ar 4中的取代基各自独立地选自氘、卤素基团、氰基、碳原子数为3～15的杂芳基、碳原子数为6～15的芳基、碳原子数为6～12的氘代芳基、碳原子数为3～7的三烷基硅基、碳原子数为1～10的烷基、碳原子数为1～10的卤代烷基或碳原子数为3～10的环烷基；
R a和R b相同或不同，且各自独立地选自氘、卤素基团、氰基、碳原子数为1～10的烷基、碳原子数为3～10的环烷基、碳原子数为6～20的芳基或碳原子数为5～15的杂芳基；
n a表示R a的个数，选自0、1、2、3、4、5、6或7，当n a大于1时，任意两个R a相同或不同，任选地，相邻的两个R a形成环；n b表示R b的个数，选自0、1、2、3、4、5、6或7，当n b大于1时，任意两个R b相同或不同，任选地，相邻的两个R b形成环。
可选地，R a和R b相同或不同，且各自独立地选自氘、氟、氰基、碳原子数为1～4的烷基、碳原子数为5～8的环烷基、碳原子数为6～18的芳基或碳原子数为5～12的杂芳基。
可选地，R a和R b分别独立地选自氘、氟、甲基、叔丁基、苯基、萘基、联苯基、三联苯基、二苯并呋喃基、二苯并噻吩基、咔唑基、环戊基或环己基。
可选地，Ar 3和Ar 4分别独立地选自碳原子数为6～25的取代或未取代的芳基、碳原子数为8～24的取代或未取代的杂芳基。具体地，Ar 3和Ar 4可以分别独立地选自碳原子数为6、7、8、9、10、11、12、13、14、15、16、17、18、19、20、21、22、23、24、25的取代或未取代的芳基，或者选自碳原子数为8、9、10、11、12、13、14、15、16、17、18、19、20、21、22、23、24的取代或未取代的杂芳基。
进一步可选地，Ar 3和Ar 4分别独立地选自碳原子数为6～20的取代或未取代的芳基、碳原子数为12～18的取代或未取代的杂芳基。具体地，Ar 3和Ar 4可以分别独立地选自碳原子数为6、7、8、9、10、11、12、13、14、15、16、17、18、19或20的取代或未取代的芳基，或者选自碳原子数为12、13、14、15、16、17或18的取代或未取代的杂芳基。
可选地，Ar 3和Ar 4分别独立地选自取代或未取代的苯基、取代或未取代的萘基、取代或未取代的联 苯基、取代或未取代的三联苯基、取代或未取代的芴基、取代或未取代的菲基、取代或未取代的三亚苯基、取代或未取代的咔唑基、取代或未取代的二苯并呋喃基、取代或未取代的二苯并噻吩基。
可选地，Ar 3和Ar 4中的取代基各自独立地选自氘、氟、氰基、碳原子数为1～4的烷基、碳原子数为6～12的芳基、碳原子数为5～12的杂芳基或五氘代苯基。
可选地，Ar 3和Ar 4中的取代基选自氘、氟、氰基、甲基、乙基、异丙基、叔丁基、苯基、萘基、联苯基、咔唑基、五氘代苯基、二苯并呋喃基或二苯并噻吩基。
可选地，Ar 3和Ar 4分别独立地选自取代或未取代的基团Z，未取代的基团Z选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000032
取代的基团Z中具有一个或两个以上的取代基，取代基各自独立地选自氘、氟、氰基、五氘代苯基、苯基、萘基、联苯基、咔唑基、二苯并呋喃基、甲基、异丙基、叔丁基；当取代基的个数大于1时，取代基相同或不同。
在一种具体的实施方式中，Ar 3、Ar 4分别独立地选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000033
可选地，Ar 3、Ar 4分别独立地选自以下基团所组成的组：
Figure PCTCN2022081284-appb-000034
本申请中，所述第二化合物具体可以选自结构如下的化合物中的至少一种：
Figure PCTCN2022081284-appb-000035
按照一种优选的实施方式，所述第二化合物的结构如式2-3-3所示，其中，R a和R b分别独立地选自氘、氟、甲基、叔丁基或苯基；Ar 3和Ar 4分别独立地选自碳原子数为6～18的取代或未取代的芳基、碳原子数为12～15的取代或未取代的杂芳基。
可选地，所述第二化合物选自以下化合物所组成的组：
Figure PCTCN2022081284-appb-000036
Figure PCTCN2022081284-appb-000037
Figure PCTCN2022081284-appb-000038
Figure PCTCN2022081284-appb-000039
Figure PCTCN2022081284-appb-000040
Figure PCTCN2022081284-appb-000041
Figure PCTCN2022081284-appb-000042
Figure PCTCN2022081284-appb-000043
Figure PCTCN2022081284-appb-000044
Figure PCTCN2022081284-appb-000045
Figure PCTCN2022081284-appb-000046
Figure PCTCN2022081284-appb-000047
可选地，所述主体材料组合物为所述第一化合物和第二化合物的混合物。例如，可以通过将所述第一化合物和第二化合物机械搅拌均匀，形成所述混合物。
本申请对所述主体材料组合物中两类化合物的相对含量没有特别限定，可根据有机电致发光器件的具体应用进行选择。通常地，以所述主体材料组合物的总重量为基准，所述第一化合物的含量可以为20-80重量％，所述第二化合物的含量可以为20-80重量％。例如，所述主体材料组合物中，所述第一化合物与第二化合物的质量比可以为20∶80，25∶75，30∶70，35∶65，40∶60，45∶65，50∶50，55∶45，60∶40，65∶35，70∶30，75∶25，80∶20等。
在一种优选的实施方式中，在所述主体材料组合物中，以所述主体材料组合物的总重量为基准，所述第一化合物的含量为30-60重量％，所述第二化合物的含量为40-70重量％，这种情况下，所述主体材料组合物应用到有机电致发光器件中，可以使器件兼具较高的发光效率和较长的使用寿命，特别适合作为电子显示装置。更优选地，以所述主体材料组合物的总重量为基准，所述第一化合物的含量为35-50重量％，所述第二化合物的含量为50-65重量％。
本申请对所提供的第一化合物的合成方法没有特别限定，本领域技术人员可以根据下文的合成例部分提供的制备方法确定合适的合成方法。换言之，本申请的合成例部分示例性地提供了第一化合物的制备方法，所采用的原料可通过商购获得或本领域熟知的方法获得。本领域技术人员可以根据这些示例性的制备方法得到本申请提供的第一化合物，在此不再详述制备该化合物的所有具体制备方法，本领域技术人员不应理解为对本申请的限制。另外，所述第二化合物可通过商购获得，或采用本领域熟知的方法获得，本申请不再赘述。
本申请第二方面提供一种有机电致发光器件，如图1所示，包括阳极100、阴极200，以及设置在所述阳极100和阴极200之间的功能层300，所述功能层300中包括有机发光层330，其中，所述有机发光层330包含本申请一方面所述的主体材料组合物。
按照一种实施方式，如图1所示，所述有机电致发光器件可以包括依次层叠设置的阳极100、空穴传输层320、有机发光层330、电子传输层340和阴极200。所述有机发光层330包含主体材料和客体材料，其中，所述主体材料由本申请的主体材料形成。
本申请对所述客体材料没有特别的限定，可参照现有技术选择。所述客体材料可以为磷光化合物或荧光化合物。通常地，所述磷光化合物可以是含有铜、钼、钨、铼、钌、锇、铑、铱、钯、铂、银、金或铕的化合物，例如选自铱(III)有机金属络合物、Pt(II)有机金属络合物、Cu络合物、金络合物、铼(III)络合物、锇(II)络合物等。通常地，所述荧光材料可以选自具有缩合芳基环的化合物或其衍生物、具有杂芳基环的化合物或其衍生物、芳香族胺衍生物等。可选地，所述客体材料可以为Ir(ppy) 3。
可选地，阳极100包括以下阳极材料，其优选地是有助于空穴注入至功能层中的具有大逸出功(功函数，work function)材料。阳极材料具体实例包括：金属如镍、铂、钒、铬、铜、锌和金或它们的合金；金属氧化物如氧化锌、氧化铟、氧化铟锡(ITO)和氧化铟锌(IZO)；组合的金属和氧化物如ZnO:Al或SnO 2:Sb；或导电聚合物如聚(3-甲基噻吩)、聚[3,4-(亚乙基-1,2-二氧基)噻吩](PEDT)、聚吡咯和聚苯胺，但不限于此。优选包括包含氧化铟锡(铟锡氧化物，indium tin oxide)(ITO)作为阳极的透明电极。
本申请中，所述空穴传输层320的材料可以选自酞菁衍生物、萘菁衍生物、卟啉衍生物、联苯胺型三芳胺、苯乙烯胺型三芳胺、二胺型三芳胺或者其他类型的材料，本领域技术人员可参照现有技术选择。例 如，例如，所述空穴传输层的材料选自以下化合物所组成的组：
Figure PCTCN2022081284-appb-000048
Figure PCTCN2022081284-appb-000049
另外，所述空穴传输层320可以为一层或两层结构。可选地，如图1所示，所述空穴传输层包括层叠设置的第一空穴传输层321和第二空穴传输层322，其中，所述第一空穴传输层321相对所述第二空穴传输层322更靠近所述阳极100。
本申请中，电子传输层340可以为单层结构，也可以为多层结构，其可以包括一种或者多种电子传输材料，电子传输材料通常可以包含金属络合物和/或含氮杂环衍生物，其中，所述金属络合物材料例如可以选自LiQ、Alq 3、Bepq 2等；所述含氮杂环衍生物可以为具有含氮六元环或五元环骨架的芳香族环、具有含氮六元环或五元环骨架的稠合芳香环化合物等，具体实例包括但不限于，BCP、Bphen、NBphen、DBimiBphen、BimiBphen等1,10-菲咯啉类化合物，或者结构如下所示的含杂氮芳基的蒽类化合物、三嗪类或嘧啶类化合物。
Figure PCTCN2022081284-appb-000050
本申请中，阴极200采用的阴极材料可以是有助于电子注入至功能层中的具有小逸出功的材料。阴极材料的具体实例包括但不限于，金属如镁、钙、钠、钾、钛、铟、钇、锂、钆、铝、银、锡和铅或它们的合金；或多层材料如LiF/Al、Liq/Al、LiO 2/Al、LiF/Ca、LiF/Al和BaF 2/Ca。优选包含镁和银的金属电极作为阴极。
可选地，如图1所示，在阳极100和第一空穴传输层321之间还设置有空穴注入层310，以增强向第一空穴传输层321注入空穴的能力。空穴注入层310可以选用联苯胺衍生物、星爆状芳基胺类化合物、酞菁衍生物或者其他材料，本申请对此不做特殊的限制。例如，空穴注入层310可以选自以下化合物所组成的组：
Figure PCTCN2022081284-appb-000051
可选地，如图1所示，在阴极200和电子传输层340之间还设置有电子注入层350，以增强向电子传输层340注入电子的能力。电子注入层350可以包括碱金属硫化物、碱金属卤化物等无机材料，或者可以包括碱金属与有机物的络合物。例如，电子注入层350的材料可以选自LiF、NaCl、CsF、Li 2O、BaO、LiQ、Cs 2CO 3、Na、Li、Ca、Al、Yb中的一种或两种以上。在一种具体的实施方式中，所述电子注入层350的材料可以包括LiQ或Yb。
可选地，所述有机电致发光器件为绿光器件。
本申请第三方面提供一种电子装置，包括本申请第二方面所述的有机电致发光器件。
如图2所示，所述电子装置400包括上述有机电致发光器件，电子装置400例如可以为显示装置、照明装置、光通讯装置或者其他类型的电子装置，例如可以包括但不限于电脑屏幕、手机屏幕、电视机、电子纸、应急照明灯、光模块等。
以下，通过实施例对本申请进一步详细说明。但是，下述实施例仅是本申请的例示，而并非限定本申请。
本申请中未提到的合成方法的化合物的都可通过商业途径获得的原料产品。
中间体IM-i1的合成：
Figure PCTCN2022081284-appb-000052
将2-氯-4-碘二苯并呋喃(30.0g；91.3mmol)，苯硼酸(12.2g；100.4mmol)，四三苯基膦钯(2.1g；1.8mmol)，碳酸钾(25.2g；182.6mmol)，四丁基溴化铵(5.9g；18.3mmol)，甲苯(240mL)，水(60mL)，乙醇(60mL)加入圆底烧瓶中，氮气保护下，于110℃搅拌反应6小时；降至室温，反应液使用水洗后分液，有机相使用无水硫酸镁干燥，减压除去溶剂得到粗品；以二氯甲烷/正庚烷作为洗脱剂将粗品使用硅胶柱色谱法提纯，得到白色固体化合物中间体IM-i1(21.0g，收率83％)。
参照中间体IM-i1的合成方法，使用下表1中反应物A替代苯硼酸，合成下表所示中间体结构。
表1
Figure PCTCN2022081284-appb-000053
Figure PCTCN2022081284-appb-000054
中间体IM-a1的合成：
Figure PCTCN2022081284-appb-000055
将中间体IM-i1(10.0g；35.9mmol)，吲哚并[2,3-a]咔唑(10.1g；39.5mmol)，三(二亚苄基丙酮)二钯(0.7g；0.7mmol)，三叔丁基膦(0.3g；1.4mmol)，叔丁醇钠(5.2g；53.8mmol)和二甲苯(100mL)加入圆底烧瓶中，氮气保护下，于140℃搅拌反应10小时；降至室温，反应液使用水洗后分液，有机相使用无水硫酸镁干燥，减压除去溶剂得到粗品；以二氯甲烷/正庚烷作为洗脱剂将粗品使用硅胶柱色谱法提纯，得到白色固体化合物中间体IM-a1(11.1g，收率62％)。
参照中间体IM-a1的合成方法，使用下表2中反应物C替代中间体IM-i1，以及反应物B替代吲哚并[2,3-a]咔唑，合成下表所示中间体结构。
表2
Figure PCTCN2022081284-appb-000056
Figure PCTCN2022081284-appb-000057
Figure PCTCN2022081284-appb-000058
Figure PCTCN2022081284-appb-000059
化合物A1的合成：
Figure PCTCN2022081284-appb-000060
将中间体IM-a1(6.0g；12.0mmol)和二甲基甲酰胺(60mL)加入圆底烧瓶中，于0℃氮气保护条件下加入氢化钠(0.3g；12.0mmol)，保温搅拌1小时；而后向反应液中分批加入2-氯-4,6-二苯基-1,3,5-三嗪(4.8g；18.1mmol)，保温搅拌1小时，而后升温至25℃，搅拌反应8小时；向反应液中加入大量去离子水，过滤，将所得固体使用水和乙醇依次淋洗，干燥得到粗品；以二氯甲烷作为洗脱剂，使用硅胶柱色谱法对粗品进行提纯，而后使用甲苯对所得产品进行重结晶提纯，得到白色固体化合物A1(5.5g，收率63％)。
参照化合物A1的合成方法，使用下表3中反应物D替代中间体IM-a1，以及反应物E替代2-氯-4,6-二苯基-1,3,5-三嗪，合成下表3中所示化合物。
表3
Figure PCTCN2022081284-appb-000061
Figure PCTCN2022081284-appb-000062
Figure PCTCN2022081284-appb-000063
Figure PCTCN2022081284-appb-000064
Figure PCTCN2022081284-appb-000065
Figure PCTCN2022081284-appb-000066
以上化合物的质谱数据如下表4所示。
表4
化合物A1 m/z＝730.3[M+H] + 化合物A84 m/z＝809.2[M+H] +
化合物A3 m/z＝748.3[M+H] + 化合物F5 m/z＝882.3[M+H] +
化合物A6 m/z＝755.3[M+H] + 化合物F10 m/z＝740.3[M+H] +
化合物A14 m/z＝806.3[M+H] + 化合物A85 m/z＝850.3[M+H] +
化合物A16 m/z＝824.3[M+H] + 化合物A79 m/z＝856.3[M+H] +
化合物A23 m/z＝806.3[M+H] + 化合物A86 m/z＝846.3[M+H] +
化合物A34 m/z＝856.3[M+H] + 化合物A87 m/z＝763.3[M+H] +
化合物A39 m/z＝748.3[M+H] + 化合物A11 m/z＝780.3[M+H] +
化合物A45 m/z＝831.3[M+H] + 化合物A88 m/z＝820.3[M+H] +
化合物A52 m/z＝856.3[M+H] + 化合物A89 m/z＝740.3[M+H] +
化合物A57 m/z＝882.3[M+H] + 化合物A91 m/z＝842.4[M+H] +
化合物A67 m/z＝882.3[M+H] + 化合物A69 m/z＝780.3[M+H] +
化合物A74 m/z＝836.3[M+H] + 化合物A82 m/z＝753.3[M+H] +
化合物A76 m/z＝820.3[M+H] + 化合物B3 m/z＝755.3[M+H] +
化合物B12 m/z＝806.3[M+H] + 化合物B26 m/z＝781.3[M+H] +
化合物B16 m/z＝806.3[M+H] + 化合物B31 m/z＝753.3[M+H] +
化合物B32 m/z＝803.3[M+H] + 化合物B33 m/z＝793.3[M+H] +
化合物C1 m/z＝730.3[M+H] + 化合物C3 m/z＝806.3[M+H] +
化合物C9 m/z＝820.3[M+H] + 化合物D1 m/z＝730.3[M+H] +
化合物D9 m/z＝830.3[M+H] + 化合物D10 m/z＝779.3[M+H] +
化合物E5 m/z＝780.3[M+H] +    
以上部分化合物的质谱数据如下表5所示。
表5
Figure PCTCN2022081284-appb-000067
Figure PCTCN2022081284-appb-000068
中间体SM-X的合成
以中间体SM-1为例说明SM-X的合成
Figure PCTCN2022081284-appb-000069
将4-叔丁基溴苯(10g；46.9mmol)，对氯苯硼酸(7.32g；46.8mmol)，四三苯基膦钯(2.7g；2.3mmol)，碳酸钾(9.7g；70.3mmol)，四丁基溴化铵(0.65g；2.3mmol)，甲苯(80mL)，水(20mL)，乙醇(40mL)加入圆底烧瓶中，氮气保护下，于110℃搅拌反应6小时；降至室温，反应液使用水洗后分液，有机相使用无水硫酸镁干燥，减压除去溶剂得到粗品；以二氯甲烷/正庚烷作为洗脱剂将粗品使用硅胶柱色谱法提纯，得到SM-1(8.6g，收率75％)。
参照SM-1的合成方法合成中间体SM-X，不同的是，使用原料M代替4-叔丁基溴苯，所采用的主要原料、相应合成的化合物及其收率如表6所示。
表6
Figure PCTCN2022081284-appb-000070
第二化合物的合成
Figure PCTCN2022081284-appb-000071
将9-(1,1’-联苯)-4-基-3,3’-联咔唑(9.9g；20.4mmol)，SM-1(5.0g；20.4mmol)，三(二亚苄基丙酮)二钯(0.18g；0.2mmol)，2-二环己基膦-2’6’-二甲氧基-联苯(0.17g；0.4mmol)，叔丁醇钠(2.9g；30.6mmol)，二甲苯(100mL)加入圆底烧瓶中，氮气保护下，于135℃搅拌反应16小时；降至室温，反应液使用水洗后分液，有机相使用无水硫酸镁干燥，减压除去溶剂得到粗品；以二氯甲烷/正庚烷作为洗脱剂将粗品使用硅胶柱色谱法提纯，得到化合物324(11.3g，收率80％)。
参照化合物324的合成方法合成化合物，不同的是，使用各中间体SM-X替代SM-1，原料O替代9-(1,1’-联苯)-4-基-3,3’-联咔唑，所采用的主要原料、相应合成的化合物及其收率如表7所示。
表7
Figure PCTCN2022081284-appb-000072
以上化合物的质谱数据如下表8所示。
表8
化合物324 m/z＝693.3[M+H] + 化合物330 m/z＝655.3[M+H] +
化合物326 m/z＝586.2[M+H] + 化合物338 m/z＝651.3[M+H] +
实施例1：绿色有机电致发光器件
通过以下过程制备阳极：将ITO厚度为
Figure PCTCN2022081284-appb-000073
的基板(康宁制造)切割成40mm×40mm×0.7mm的尺寸，采用光刻工序，将其制备成具有阴极、阳极以及绝缘层图案的实验基板，利用紫外臭氧以及O 2:N 2等离子进行表面处理，以增加阳极(实验基板)的功函数的和清除浮渣。
在实验基板(阳极)上真空蒸镀F4-TCNQ以形成厚度为
Figure PCTCN2022081284-appb-000074
的空穴注入层(HIL)，并且在空穴注入层上蒸镀NPB，形成厚度为
Figure PCTCN2022081284-appb-000075
的第一空穴传输层。
在第一空穴传输层上真空蒸镀PAPB，形成厚度为
Figure PCTCN2022081284-appb-000076
的第二空穴传输层。
在第二空穴传输层上，将主体材料组合物GH-1-1和Ir(ppy) 3以100％:10％(蒸镀速率)的比例进行共同蒸镀，形成厚度为
Figure PCTCN2022081284-appb-000077
的绿色有机发光层(EML)。
将ET-9和LiQ以1:1的重量比进行混合并蒸镀形成
Figure PCTCN2022081284-appb-000078
厚的电子传输层(ETL)，将Yb蒸镀在电子传输层上以形成厚度为
Figure PCTCN2022081284-appb-000079
的电子注入层(EIL)，然后将镁(Mg)和银(Ag)以1:9.5的蒸镀速率混合，真空蒸镀在电子注入层上，形成厚度为
Figure PCTCN2022081284-appb-000080
的阴极。
在上述阴极上蒸镀厚度为
Figure PCTCN2022081284-appb-000081
的CP-05，形成有机覆盖层(CPL)，从而完成有机电致发光器件的制 造。
实施例2-实施例59
除了在形成发光层时，分别以下表9中所示的其余GH-X-Y类主体材料组合物替代主体材料组合物GH-1-1以外，利用与实施例1相同的方法制作有机电致发光器件。
比较例1-比较例4
除了在形成有机发光层时，以下表9中所示的GH-X-Y类主体材料组合物替代主体材料组合物GH-1-1以外，利用与实施例1相同的方法制作有机电致发光器件。
以上实施例和比较例中，所使用的主体材料组合物GH-X-Y分别是将两种化合物通过混合得到，具体组成如表9所示，其中，质量比是指表格中前列所示化合物与后列所示化合物的质量比。以主体材料组合物GH-1-1为例说明，结合表9可知，GH-1-1是由化合物A6和化合物4按照50∶50的质量比混合而成；以主体材料组合物GH-D1-1为例，结合表6可知，GH-D1-1是由化合物D1与化合物4按照35∶65的质量比混合而成。
除了上述合成的第二化合物，所采用的其他第二化合物及其CAS号如下：
Figure PCTCN2022081284-appb-000082
Figure PCTCN2022081284-appb-000083
实施例和比较例中，其他主要材料的结构式如下所示：
Figure PCTCN2022081284-appb-000084
其中，作为对比的化合物A和化合物B对应的是表9所示的比较例1-4所采用的第一化合物。
对如上制得的有机电致发光器件，在电流密度为20mA/cm 2的测试条件下分析了器件的性能，其结果示于下表9。
表9
Figure PCTCN2022081284-appb-000085
Figure PCTCN2022081284-appb-000086
Figure PCTCN2022081284-appb-000087
Figure PCTCN2022081284-appb-000088
实施例1-59与比较例1-4均采用了含双咔唑类化合物的主体材料组合物，主要区别体现在组合物中的第一化合物不同，结合表9所示的结果可知，在组合物中两类化合物配比相当的情况下，与比较例1-4相比，实施例1-59的有机电致发光器件的寿命至少提高了14％，电流效率至少提高了13.8％，功率效率至少提高了17.3％；且维持较低的驱动电压。可见，采用本申请的主体材料的有机电致发光器件显示出更高的发光效率和更长的使用寿命，同时也兼具较低的驱动电压。

Claims (16)

  1. 主体材料组合物，包含第一化合物和第二化合物；其中，所述第一化合物的结构如式1所示，所述第二化合物的结构如式2所示：
    Figure PCTCN2022081284-appb-100001
    式1中，Ar选自碳原子数为6～30的取代或未取代的芳基、碳原子数为3～30的取代或未取代的杂芳基；Het选自碳原子数为2～20的取代或未取代的含氮亚杂芳基，且所述含氮亚杂芳基中含有至少2个N原子；Ar 1和Ar 2各自独立地选自氢、碳原子数为6～30的取代或未取代的芳基、碳原子数为3～20的取代或未取代的杂芳基；
    R 1、R 2、R 3、R 4和R 5相同或不同，且各自独立地选自氘、氟、氰基、碳原子数为1～10的烷基、碳原子数为6～20的芳基或碳原子数为3～30的杂芳基；
    n 1表示R 1的个数，选自0、1、2、3或4，当n 1大于1时，任意两个R 1相同或不同，任选地，相邻的两个R 1形成环；n 2表示R 2的个数，选自0、1或2，当n 2为2时，任意两个R 2相同或不同，任选地，相邻的两个R 2形成环；n 3表示R 3的个数，选自0、1、2、3或4，当n 3大于1时，任意两个R 3相同或不同，任选地，相邻的两个R 3形成环；n 4表示R 4的个数，选自0、1或2，当n 4大于1时，任意两个R 4相同或不同；n 5表示R 5的个数，选自0、1、2、3或4，当n 5大于1时，任意两个R 5相同或不同，任选地，相邻的两个R 5形成环；
    所述Het、Ar、Ar 1和Ar 2中的取代基各自独立地选自氘、卤素基团、氰基、碳原子数为3～15的杂芳基、碳原子数为6～15的芳基、碳原子数为3～12的三烷基硅基、碳原子数为1～10的烷基、碳原子数为1-10的氘代烷基、碳原子数为1～10的卤代烷基或碳原子数为3～10的环烷基；
    式2中，Ar 3和Ar 4各自独立地选自碳原子数为6～30的取代或未取代的芳基、碳原子数为8～25的取代或未取代的杂芳基；
    Ar 3和Ar 4中的取代基各自独立地选自氘、卤素基团、氰基、碳原子数为3～15的杂芳基、碳原子数为6～15的芳基、碳原子数为6～12的氘代芳基、碳原子数为3～7的三烷基硅基、碳原子数为1～10的烷基、碳原子数为1～10的卤代烷基或碳原子数为3～10的环烷基；
    R a和R b相同或不同，且各自独立地选自氘、卤素基团、氰基、碳原子数为1～10的烷基、碳原子数为3～10的环烷基、碳原子数为6～20的芳基或碳原子数为5～15的杂芳基；
    n a表示R a的个数，选自0、1、2、3、4、5、6或7，当n a大于1时，任意两个R a相同或不同，任选地，相邻的两个R a形成环；n b表示R b的个数，选自0、1、2、3、4、5、6或7，当n b大于1时，任意两个R b相同或不同，任选地，相邻的两个R b形成环。
  2. 根据权利要求1所述的主体材料组合物，其中，所述第一化合物中，Ar选自碳原子数为6～20的取代或未取代的芳基、碳原子数为5～20的取代或未取代的杂芳基；
    优选地，Ar中的取代基选自氘、氟、氰基、碳原子数为1～5的烷基、碳原子数为6～12的芳基、碳原子数为5～12的杂芳基、碳原子数为3～6的三烷基硅基、碳原子数为1～5的氘代烷基或碳原子数为1～5的卤代烷基。
  3. 根据权利要求1所述的主体材料组合物，其中，所述第一化合物中，Ar选自取代或未取代的基团 V 1，未取代的基团V 1选自以下基团所组成的组：
    Figure PCTCN2022081284-appb-100002
    其中，
    Figure PCTCN2022081284-appb-100003
    表示化学键；取代的基团V 1中具有一个或两个以上取代基，取代的基团V 1中的取代基各自独立地选自氘、氟、氰基、甲基、乙基、正丙基、异丙基、叔丁基、三氟甲基、三甲基硅基、三氘代甲基、苯基、萘基、联苯基或咔唑基；当取代基的个数大于1时，各取代基相同或不同。
  4. 根据权利要求1所述的主体材料组合物，其中，所述第一化合物中，Het选自碳原子数为3～12的含氮亚杂芳基，且所述含氮亚杂芳基中含有至少2个N原子；
    优选地，Het选自亚三嗪基、亚嘧啶基、亚喹喔啉基、亚喹唑啉基，以及式a、式b、式c所示基团所组成的组：
    Figure PCTCN2022081284-appb-100004
  5. 根据权利要求1所述的主体材料组合物，其中，所述第一化合物中，Ar 1和Ar 2分别独立地选自氢、碳原子数为6～20的取代或未取代的芳基、碳原子数为5～20的取代或未取代的杂芳基；
    优选地，Ar 1和Ar 2中的取代基分别独立地选自氘、氟、氰基、碳原子数为1～5的烷基、碳原子数为6～12的芳基或碳原子数为5～12的杂芳基。
  6. 根据权利要求1所述的主体材料组合物，其中，所述第一化合物中，Ar 1和Ar 2分别独立地选自氢、取代或未取代的苯基、取代或未取代的萘基、取代或未取代的联苯基、取代或未取代的三联苯基、取代或未取代的芴基、取代或未取代的咔唑基、取代或未取代的二苯并呋喃基、取代或未取代的二苯并噻吩基；
    优选地，Ar 1和Ar 2中的取代基分别独立地选自氘、氟、氰基、甲基、乙基、正丙基、异丙基、叔丁基、苯基、萘基、联苯基或咔唑基。
  7. 根据权利要求1所述的主体材料组合物，其中，所述第一化合物具有式A-式F中任意一项所示的结构：
    Figure PCTCN2022081284-appb-100005
  8. 根据权利要求1所述的主体材料组合物，其中，所述第一化合物选自以下化合物所组成的组：
    Figure PCTCN2022081284-appb-100006
    Figure PCTCN2022081284-appb-100007
    Figure PCTCN2022081284-appb-100008
    Figure PCTCN2022081284-appb-100009
    Figure PCTCN2022081284-appb-100010
    Figure PCTCN2022081284-appb-100011
    Figure PCTCN2022081284-appb-100012
  9. 根据权利要求1所述的主体材料组合物，其中，所述第二化合物中，Ar 3和Ar 4分别独立地选自碳原子数为6～25的取代或未取代的芳基、碳原子数为8～24的取代或未取代的杂芳基；
    优选地，Ar 3和Ar 4分别独立地选自碳原子数为6～20的取代或未取代的芳基、碳原子数为12～18的取代或未取代的杂芳基；
    优选地，Ar 3和Ar 4中的取代基各自独立地选自氘、氟、氰基、碳原子数为1～4的烷基、碳原子数为6～12的芳基、碳原子数为5～12的杂芳基或五氘代苯基。
  10. 根据权利要求1所述的主体材料组合物，其中，所述第二化合物中，Ar 3和Ar 4分别独立地选自取代或未取代的基团Z，未取代的基团Z选自以下基团所组成的组：
    Figure PCTCN2022081284-appb-100013
    取代的基团Z中具有一个或两个以上的取代基，取代基各自独立地选自氘、氟、氰基、五氘代苯基、苯基、萘基、联苯基、甲基、异丙基、叔丁基、咔唑基或二苯并呋喃基；当取代基的个数大于1时，取代基相同或不同；
    优选地，取代基各自独立地选自氘、氟、氰基、五氘代苯基、苯基、萘基、联苯基、甲基、异丙基、叔丁基或咔唑基。
  11. 根据权利要求1所述的主体材料组合物，其中，所述第二化合物中，Ar 3、Ar 4分别独立地选自以下基团所组成的组：
    Figure PCTCN2022081284-appb-100014
  12. 根据权利要求1所述的主体材料组合物，其中，所述第二化合物中，R a和R b分别独立地选自氘、氟、甲基、叔丁基、苯基、萘基、联苯基、三联苯基、二苯并呋喃基、二苯并噻吩基或咔唑基。
  13. 根据权利要求1所述的主体材料组合物，其中，所述第二化合物选自以下化合物所组成的组：
    Figure PCTCN2022081284-appb-100015
    Figure PCTCN2022081284-appb-100016
    Figure PCTCN2022081284-appb-100017
    Figure PCTCN2022081284-appb-100018
    Figure PCTCN2022081284-appb-100019
    Figure PCTCN2022081284-appb-100020
    Figure PCTCN2022081284-appb-100021
    Figure PCTCN2022081284-appb-100022
    Figure PCTCN2022081284-appb-100023
    Figure PCTCN2022081284-appb-100024
    Figure PCTCN2022081284-appb-100025
    Figure PCTCN2022081284-appb-100026
  14. 根据权利要求1-13中任意一项所述的主体材料组合物，其中，以所述主体材料组合物的总重量为基准，所述第一化合物的含量为20-80重量％，所述第二化合物的含量为20-80重量％；
    优选地，以所述主体材料组合物的总重量为基准，所述第一化合物的含量为30-60重量％，所述第二化合物的含量为40-70重量％。
  15. 有机电致发光器件，包括阳极、阴极，以及设置在所述阳极和阴极之间的功能层，所述功能层包括有机发光层，其中，所述有机发光层包含权利要求1-14中任意一项所述的主体材料组合物。
  16. 电子装置，包括权利要15所述的有机电致发光器件。
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