WO2019206242A1 - 有机电致发光材料及器件 - Google Patents

有机电致发光材料及器件 Download PDF

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WO2019206242A1
WO2019206242A1 PCT/CN2019/084389 CN2019084389W WO2019206242A1 WO 2019206242 A1 WO2019206242 A1 WO 2019206242A1 CN 2019084389 W CN2019084389 W CN 2019084389W WO 2019206242 A1 WO2019206242 A1 WO 2019206242A1
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group
iii
substituted
unsubstituted
compound
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PCT/CN2019/084389
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English (en)
French (fr)
Inventor
孙恩涛
刘叔尧
吴俊宇
冯嘉宁
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北京鼎材科技有限公司
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Priority claimed from CN201810398403.4A external-priority patent/CN110407838B/zh
Priority claimed from CN201811402365.1A external-priority patent/CN110256439B/zh
Priority claimed from CN201811500633.3A external-priority patent/CN111285877B/zh
Priority claimed from CN201910259685.4A external-priority patent/CN111763208B/zh
Application filed by 北京鼎材科技有限公司 filed Critical 北京鼎材科技有限公司
Priority to KR1020207034262A priority Critical patent/KR20210002670A/ko
Publication of WO2019206242A1 publication Critical patent/WO2019206242A1/zh

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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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14—Carrier transporting layers
    • H10K50/16—Electron transporting layers

Definitions

  • This invention relates to a novel organic heterocyclic compound, and more particularly to a class of compounds containing an electron-deficient group structure such as quinazoline triazole and its use in organic electroluminescent devices.
  • An Organic Light Emission Diodes (OLED) device is a type of device having a sandwich-like structure, including a positive and negative electrode film layer and an organic functional material layer sandwiched between the electrode film layers. A voltage is applied to the electrodes of the OLED device, a positive charge is injected from the positive electrode, and a negative charge is injected from the negative electrode. Under the action of the electric field, the positive and negative charges migrate in the organic layer to meet the combined luminescence. Due to the advantages of high brightness, fast response, wide viewing angle, simple process, and flexibility, OLED devices have attracted much attention in the field of new display technologies and new lighting technologies. At present, this technology has been widely used in display panels of new lighting fixtures, smart phones and tablet PCs, and will further expand to large-scale display products such as TVs. It is a new type of display with fast development and high technical requirements. technology.
  • electron transporting materials are compounds having electron-deficient nitrogen-containing heterocyclic groups, which mostly have a high electron affinity and thus have a strong ability to accept electrons, but are relatively close to hole transport materials.
  • the electron mobility of common electron transport materials such as AlQ3 (octahydroxyquinoline aluminum) is much lower than that of hole transport materials, thus causing carrier injection and transport on the one hand in OLED devices.
  • the probability of recombination of holes and electrons caused by imbalance is reduced, thereby reducing the luminous efficiency of the device.
  • an electron transporting material having a lower electron mobility causes an increase in the operating voltage of the device, thereby affecting power efficiency, and energy. Savings are not good.
  • Liq lithium octahydroxyquinolate
  • the role of Liq is mainly to reduce the amount of metal lithium under the action of the electrons injected by the cathode, thereby effecting the n-doping of the electron transporting material, thereby significantly increasing the electron injection effect.
  • lithium ion The function of increasing the electron mobility of the ET material by coordinating with the N atom in the electron transporting material enables the Liq-doped ET device to have a low operating voltage and a high luminous efficiency.
  • LiQ is sensitive to water and the environment, which leads to an increase in process complexity, which is not conducive to the reduction of the design and manufacturing cost of the equipment; on the other hand, the use of materials is more diverse, which is not conducive to the reduction of material costs.
  • the present invention provides a novel compound while providing a method of applying the compound to an OLED device.
  • This compound contains a quinazoline-triazole structure, and the inventors of the present invention have found that it can be incorporated into an organic electroluminescent device as an electron transporting material, and good electron injection and transport properties can be achieved.
  • L a is a substituted or unsubstituted C 6 -C 30 arylene group
  • R a is the following group
  • X a 1 to X a 5 are the same or different from each other, and X a 1 to X a 5 each independently represent a nitrogen atom or CR d , and R d represents a C 1 -C 12 alkane selected from H, substituted or unsubstituted.
  • L a is a single bond
  • R a is H, a substituted or unsubstituted C 6 -C 30 aryl group or a substituted or unsubstituted C 3 -C 30 heteroaryl group selected from a C 1 -C 10 alkyl group, a C 6 -C 14 aryl group or a C 3 -C 14 hetero group.
  • L b is a single bond, a substituted or unsubstituted C 6 -C 30 arylene group or a substituted or unsubstituted C 3 -C 30 heteroarylene group;
  • R b is selected from the group consisting of H, cyano, substituted or unsubstituted C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, substituted or unsubstituted C 6 -C 30
  • X b 1 to X b 6 are C, CR e or N, and at least one X is N, and R e is H, a C6 to C30 aryl group or a C3 to C30 heteroaryl group having 1 to 3 hetero atoms, if present When a plurality of R e , the plurality of R e are the same or different from each other;
  • R c is selected from the group consisting of H, cyano, substituted or unsubstituted C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, substituted or unsubstituted C 6 -C 30 An arylamino group, a substituted or unsubstituted C 3 -C 30 heteroarylamino group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 3 -C 50 heteroaryl group,
  • R b and R c are each optionally fused to the attached benzene ring independently to form a C9-C30 aryl or heteroaryl group, the aryl or heteroaryl group formed optionally being 0, 1, 2, 3, 4 or 5 each independently selected from substituted or unsubstituted C1-C12 alkyl, halogen, cyano, nitro, hydroxy, silane, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3 Substituted by a substituent in the ⁇ C30 heteroaryl;
  • n is an integer of 1 to 5, and when n ⁇ 2, a plurality of R a are the same or different from each other,
  • n is an integer of 0 to 4, and when m ⁇ 2, a plurality of R c are the same or different from each other,
  • the substituent groups are each independently selected from halogen, cyano, nitro, C1-C12 alkyl or cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy. Or one of a thioalkoxy group, a C6-C30 arylamino group, a C3-C30 heteroarylamino group, a C6-C30 aryl group, or a C3-C30 heteroaryl group.
  • the compound of the formula (A) of the present invention may be a compound represented by the following formula (I).
  • L I is a substituted or unsubstituted C 6 -C 18 arylene group
  • R I 1 is the following group
  • X I 1 to X I 5 are the same or different from each other, and X I 1 and X I 5 each independently represent a nitrogen atom or CH, and X I 2 to X I 4 each independently represent a nitrogen atom or CR I 4 , R I 4 represents a group selected from H, a substituted or unsubstituted C 1 -C 12 alkyl group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 3 -C 30 heteroaryl group;
  • R I 4 represents a group selected from H, a substituted or unsubstituted C 1 -C 12 alkyl group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 3 -C 30 heteroaryl group;
  • R I 2 is selected from the group consisting of H, substituted or unsubstituted C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, substituted or unsubstituted C 6 -C 30 aryl An amino group, a substituted or unsubstituted C 3 -C 30 heteroarylamino group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 3 -C 30 heteroaryl group,
  • R I 3 is selected from the group consisting of C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, C 6 -C 30 arylamino, C 3 -C 30 heteroarylamino, C 6 -C 30 aryl, C 3 -C 30 heteroaryl,
  • N1 is an integer from 1 to 5
  • M1 is an integer from 0 to 4,
  • aryl or heteroaryl is optionally independently selected from 0, 1, 2, 3 or 4, independently selected from C 1 -C 12 alkyl, C 6 -C 30 aryl, C 3 -C 30 heteroaryl Substituted by a substituent in the group.
  • the compound of the formula (A) of the present invention may be a compound represented by the formula (II).
  • L II is a substituted or unsubstituted C6-C18 arylene group
  • R II 1 is the following group
  • X II 1 to X II 5 are the same or different from each other, and X II 1 and X II 5 each independently represent a nitrogen atom or CH, and X II 2 to X II 4 each independently represent a nitrogen atom or CR II 4 , R II 4 represents a group selected from H, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl; R II 4 When the number is two or more, a plurality of R II 4 are the same or different from each other, or adjacent R II 4 is fused with a linked benzene ring to form a C9-C30 aryl or heteroaryl group, and * represents a group with L II Connection site,
  • R II 2 is selected from the group consisting of H, cyano, substituted or unsubstituted C1-C12 alkyl, C1-C12 alkoxy, hydroxy, amino, substituted or unsubstituted C6-C30 arylamino, substituted Or an unsubstituted C3 to C30 heteroarylamino group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group,
  • R II 3 is selected from the group consisting of C1-C12 alkyl, C1-C12 alkoxy, hydroxy, amino, C6-C30 arylamino, C3-C30 heteroarylamino, C6-C30 aryl, C3 ⁇ C30 heteroaryl,
  • R II 2 and R II 3 are each optionally fused independently to the attached benzene ring to form a C9-C30 aryl or heteroaryl group, the aryl or heteroaryl group formed optionally being 0, 1, 2 3, 4 or 5 each independently selected from substituted or unsubstituted C1-C12 alkyl, halogen, cyano, nitro, hydroxy, silane, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted Substituted by a substituent in the C3 to C30 heteroaryl group;
  • N2 is an integer from 1 to 5
  • M2 is an integer from 0 to 4,
  • aryl or heteroaryl group is optionally substituted by 0, 1, 2, 3 or 4 substituents each independently selected from a C1 to C12 alkyl group, a C6 to C30 aryl group, and a C3 to C30 heteroaryl group. Replace.
  • the compound of the formula (A) of the present invention may be a compound of the formula represented by the following formula (III):
  • a III is represented by the following formula (III-a):
  • Ar III is selected from the group consisting of a substituted or unsubstituted group of an aryl group of C6-C60 or a heteroaryl group of C3-C50;
  • R III 1 -R III 4 are each independently selected from the group consisting of H, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C6-C60 aryl, Substituted or unsubstituted C3-C50 heteroaryl;
  • L III is selected from substituted or unsubstituted arylene groups of C6-C30;
  • X III 1 -X III 5 are each independently selected from C, CH or N, and at least one is N;
  • N3 is an integer from 0 to 4, and R III 7 is selected from one of the group consisting of a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted group.
  • the C3-C50 heteroaryl group may be the same or different from each other when R III 7 is plural, and a plurality of R III 7 may be fused and linked;
  • the substituent groups are each independently selected from halogen, cyano, nitro, C1-C10 alkyl or cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy. Or a thioalkoxy group, a C6-C30 arylamino group, a C3-C30 heteroarylamino group, a C6-C30 monocyclic aromatic hydrocarbon or a fused ring aromatic hydrocarbon group, a C3-C30 monocyclic heteroaromatic hydrocarbon or a fused ring hetero One of the aromatic hydrocarbon groups.
  • the compound of the formula (A) of the present invention may be a compound of the formula represented by the formula (IV):
  • L IV is a single bond, a C6-C30 arylene group or a C3-C30 heteroarylene group; m4 is an integer of 1-4; and R IV 1 and R IV 2 are each independently H, substituted or unsubstituted a C6-C30 aryl group or a substituted or unsubstituted C3-C30 heteroaryl group selected from a C1-C10 alkyl group, a C6-C14 arylene group or a C3-C14 heteroarylene group.
  • Ar IV is the following structure:
  • X IV 1 to X IV 6 are C, CR IV 3 or N, and at least one X IV is N, R IV 3 is H, C6 to C30 aryl or C3 to C30 having 1 to 3 hetero atoms
  • the use of a compound as described above in an organic electroluminescent device is also provided.
  • the compound can be used as, but not limited to, an electron transport layer material.
  • an organic electroluminescent device comprising a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode, characterized in that The organic layer contains the compound as described above.
  • an organic layer such as an electron injecting layer, an electron transporting layer, a light emitting layer, a hole transporting layer, or a hole injecting layer, which contains the compound of the present invention, is usually contained.
  • the organic layer can be used as, but not limited to, an electron transport layer.
  • such a compound containing an electron-deficient group structure such as quinazoline-triazole has a large conjugated structure, that is, a quinazoline-triazole structure, thereby being used as an electron transporting material.
  • a good electron injection and transmission performance is achieved, and an organic electroluminescent device having a low driving voltage and high luminous efficiency can be obtained.
  • the compound of the present invention can also be applied to an organic electronic device, which may, for example, be an organic electroluminescent device, a lighting element, an organic thin film transistor, an organic field effect transistor, an organic thin film solar cell, an information tag, an electronic artificial Large-area sensors such as skin sheets and sheet-type scanners, electronic paper, and organic EL panels.
  • an organic electronic device which may, for example, be an organic electroluminescent device, a lighting element, an organic thin film transistor, an organic field effect transistor, an organic thin film solar cell, an information tag, an electronic artificial Large-area sensors such as skin sheets and sheet-type scanners, electronic paper, and organic EL panels.
  • the expression of Ca to Cb means that the group has a carbon number a to b, and unless otherwise specified, the number of carbon atoms generally does not include the number of carbon atoms of the substituent, that is, In the expression "something of a substituted or unsubstituted Ca to Cb", if a substituent is present, the number of carbon atoms does not include the number of carbon atoms of the substituent. If “substituted or unsubstituted" is not indicated, the above number of carbon atoms is the number of carbon atoms of the entire group.
  • the expression of a chemical element includes the concept of a chemically identical isotope, such as the expression "hydrogen”, and also includes the concepts of " ⁇ " and “ ⁇ ” having the same chemical properties. It should be noted that in the present invention, “D” may also be used to indicate " ⁇ ”.
  • substituted or unsubstituted means substituted by one or more substituents selected from the group consisting of halogen, cyano, hydroxy, alkoxy, alkyl, aryl, heteroaryl, preferably Fluorine, cyano, methoxy, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, phenyl, biphenyl, naphthyl, phenanthryl, anthracenyl , dibenzofuranyl, dibenzothiophenyl, pyridyl, quinolyl, phenylpyridyl, pyridylphenyl, etc.; or no substituent.
  • substituents selected from the group consisting of halogen, cyano, hydroxy, alkoxy, alkyl, aryl, heteroaryl, preferably Fluorine, cyano, methoxy, methyl, e
  • the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably from 1 to 10.
  • Specific examples of the alkyl group include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, pentyl group, hexyl group, octyl group, decyl group and the like.
  • the aryl group is not particularly limited, but preferably has 6 to 60 carbon atoms, for example, 6 to 30 carbon atoms.
  • Specific examples of the aryl group include a phenyl group, a biphenyl group, a naphthyl group, an anthracenyl group, a phenanthryl group, a fluorenyl group and the like
  • the C6-C30 aryl group is preferably phenyl, naphthyl, more preferably phenyl.
  • the heteroaryl group is a heteroaryl group containing one or more of O, N, S, and Si as a hetero atom, and the number of carbon atoms is preferably from 3 to 50, for example, from 3 to 30.
  • Specific examples of the heteroaryl group include a thienyl group, a furyl group, a pyrrolyl group, an imidazolyl group, a thiazolyl group, an oxazolyl group and the like.
  • Examples of the heteroaryl group of C3 to C30 include a nitrogen-containing heteroaryl group, an oxygen-containing heteroaryl group, and a sulfur-containing heteroaryl group.
  • a pyridyl group a pyrimidinyl group, and a pyrazinyl group.
  • a group in the structural formula such as a substitution bond of R IV 2 or the like is directed to the expression of the center of the ring, indicating that the substitution position may be at any possible position on the ring.
  • the material for an organic electroluminescence device of the present invention is a compound represented by the following formula (A).
  • L a is a substituted or unsubstituted C 6 -C 30 arylene group
  • R a is the following group
  • X a 1 to X a 5 are the same or different from each other, and X a 1 to X a 5 each independently represent a nitrogen atom or CR d , and R d represents a C 1 -C 12 alkane selected from H, substituted or unsubstituted.
  • L a is a single bond
  • R a is H, a substituted or unsubstituted C 6 -C 30 aryl group or a substituted or unsubstituted C 3 -C 30 heteroaryl group selected from a C 1 -C 10 alkyl group, a C 6 -C 14 aryl group or a C 3 -C 14 hetero group.
  • L b is a single bond, a substituted or unsubstituted C 6 -C 30 arylene group or a substituted or unsubstituted C 3 -C 30 heteroarylene group;
  • R b is selected from the group consisting of H, cyano, substituted or unsubstituted C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, substituted or unsubstituted C 6 -C 30
  • X b 1 to X b 6 are C, CR e or N, and at least one X is N, and R e is H, a C6 to C30 aryl group or a C3 to C30 heteroaryl group having 1 to 3 hetero atoms, if present When a plurality of R e , the plurality of R e are the same or different from each other;
  • R c is selected from the group consisting of H, cyano, substituted or unsubstituted C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, substituted or unsubstituted C 6 -C 30 An arylamino group, a substituted or unsubstituted C 3 -C 30 heteroarylamino group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 3 -C 50 heteroaryl group,
  • R b and R c are each optionally fused to the attached benzene ring independently to form a C9-C30 aryl or heteroaryl group, the aryl or heteroaryl group formed optionally being 0, 1, 2, 3, 4 or 5 each independently selected from substituted or unsubstituted C1-C12 alkyl, halogen, cyano, nitro, hydroxy, silane, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3 Substituted by a substituent in the ⁇ C30 heteroaryl;
  • n is an integer of 1 to 5, and when n ⁇ 2, a plurality of R a are the same or different from each other,
  • n is an integer of 0 to 4, and when m ⁇ 2, a plurality of R c are the same or different from each other,
  • the substituent groups are each independently selected from halogen, cyano, nitro, C1-C12 alkyl or cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy. Or one of a thioalkoxy group, a C6-C30 arylamino group, a C3-C30 heteroarylamino group, a C6-C30 aryl group, or a C3-C30 heteroaryl group.
  • X a 1 -X a 5 are each independently selected from C, CH or N, and at least one is N.
  • X a 1 and X a 5 each independently represent a nitrogen atom or CH
  • X a 2 to X a 4 each independently represent a nitrogen atom or CR d .
  • the aryl or heteroaryl is optionally independently selected from 0, 1, 2, 3 or 4, independently selected from C 1 -C 12 alkyl, C 6 -C 30 aryl, C 3 - Substituted by a substituent in the C 30 heteroaryl group.
  • the substituent groups are each independently selected from halo, cyano, nitro, C1-C10 alkyl or cycloalkyl, C2-C10 alkenyl, C1-C6 alkoxy or thioalkoxy group, C6-C30 arylamino group, C3-C30 heteroarylamino group, C6-C30 monocyclic aromatic hydrocarbon or fused ring aromatic hydrocarbon group, C3-C30 single One of a cycloheteroarene or a fused ring heteroaryl group.
  • the material for an organic electroluminescence device of the present invention is a compound represented by the following formula (I).
  • the present invention selects a group having a strong electron affinity, such as a pyridyl group, a pyrimidinyl group, a quinolyl group, a triazinyl group or the like.
  • the compound of the present invention introduces a novel quinazoline-triazole mother nucleus having a large conjugated structure, and introduces an electron-deficient group such as a pyrimidine, a triazine or a derivative thereof, thereby making it high.
  • the electron affinity is thus closer to the work function of the cathode material, allowing the material to easily get electrons from the cathode with strong electron injectability.
  • the compound of the invention has a very good coplanar conjugated structure, so that the compound molecules can fully undergo ⁇ - ⁇ interaction between groups in the solid state, thereby facilitating the transfer of electrons between the molecules of the material, so that The material has a very high electron mobility.
  • L I is a substituted or unsubstituted C 6 -C 18 arylene group. Specifically, L I is preferably a substituted or unsubstituted phenylene group, a naphthylene group or a phenanthrylene group.
  • R I 1 is the following group.
  • X I 1 to X I 5 are the same or different from each other, and X I 1 and X I 5 each independently represent a nitrogen atom or CH, and X I 2 to X I 4 each independently represent a nitrogen atom or CR I 4 .
  • R I 4 represents a C 1 -C 12 alkyl group substituted or unsubstituted, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 3 -C 30 hetero group. a group in an aryl group. Further, when the number of R I 4 is two or more, a plurality of R I 4 are the same or different from each other; or an adjacent R I 4 is fused with a bonded benzene ring to form a C 6 - C 30 aryl or heteroaryl group. .
  • adjacent R I 4 is fused to a phase-bonded benzene ring
  • two adjacent R I 4 are formed into a ring shape. a case where a group is fused to a linked benzene ring; and when the number of R I 4 is three, two sets of two adjacent R I 4 forming a cyclic group are fused to each other and connected to each other The case where the benzene ring is fused.
  • * represents a connection site with L I .
  • aryl or heteroaryl group is optionally selected from 0, 1, 2, 3 or 4, each independently selected from a C 1 - C 12 alkyl group, a C 6 - C 30 aryl group, a C 3 - C group. Substituted in the 30 heteroaryl group.
  • R I 1 is preferably selected from the group consisting of a triazinyl group, a pyrimidinyl group, a quinazolinyl group, a pyridyl group, a pyrazinyl group, an isoquinolyl group, a 1,5-pyridinopyridinyl group, a quinolyl group, a porphyrin group.
  • quinoxalinyl these groups are optionally substituted by one or more groups selected from the group consisting of ethyl, t-butyl, phenyl, naphthyl, biphenyl, pyridyl, phenylpyridyl, pyridine Phenyl group.
  • R I 1 is preferably an electron-deficient aromatic heterocyclic ring, more preferably an aromatic heterocyclic ring having a Hammett value of more than 0.2, and thus R I 1 as a substituent of the compound of the present invention as an electron transporting material. Excellent performance has contributed greatly to this, presumably because these electron-deficient aromatic heterocycles are beneficial for improving the electron injection and migration capabilities of materials.
  • R I 2 is a group selected from the group consisting of H, substituted or unsubstituted C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, substituted or Unsubstituted C 6 -C 30 arylamino, substituted or unsubstituted C 3 -C 30 heteroarylamino, substituted or unsubstituted C 6 -C 30 aryl, substituted or unsubstituted C 3 -C 30 Heteroaryl.
  • R I 2 is preferably selected from the following groups.
  • R I 2 is preferably an aromatic ring, such as a substituent R of the compounds of the present invention, compound I 2 as the electron transport material greatly contributes to excellent performance, presumably because: I 2 R improving Intermolecular ⁇ - ⁇ conjugation enhances carrier mobility.
  • R I 3 is selected from the group consisting of C 1 -C 12 alkyl, C 1 -C 12 alkoxy, hydroxy, amino, C 6 -C 30 arylamino, C 3 to C 30 heteroarylamino group, C 6 -C 30 aryl group, C 3 -C 30 heteroaryl group.
  • n is an integer of from 1 to 5, preferably 1 or 2.
  • m is an integer of 0 to 4, preferably 0 or 1.
  • the compound represented by the above formula (I) is preferably any one of the compounds represented by the following formulas (I-1) to (I-3).
  • the preferred structure of the compound of the present invention includes the following compounds represented by the structures I-C1 to I-C114, but is not limited thereto.
  • the compound of the present invention can be applied to an organic electronic device, which may, for example, be an organic electroluminescence device, a lighting element, an organic thin film transistor, an organic field effect transistor, an organic thin film solar cell, an information tag, or an electron.
  • an organic electronic device which may, for example, be an organic electroluminescence device, a lighting element, an organic thin film transistor, an organic field effect transistor, an organic thin film solar cell, an information tag, or an electron.
  • Large-area sensors such as artificial skin sheets and sheet-type scanners, electronic paper, and organic EL panels.
  • the present invention provides the use of the above quinazoline-triazole-containing compound containing a novel electron-deficient group in the presence of an electroluminescent device.
  • the compound can be used as, but not limited to, an electron transport layer material.
  • an embodiment of the present invention provides an organic electroluminescence device including a first electrode, a second electrode, and one or more organic layers interposed between the first electrode and the second electrode Wherein the organic layer comprises the above quinazolinotriazole derivative.
  • the organic layer between the first electrode and the second electrode includes at least a light-emitting layer, and generally further includes an organic layer such as an electron injection layer, an electron transport layer, a hole transport layer, a hole injection layer, and a hole blocking layer.
  • an organic layer containing the compound of the present invention can be used for, but not limited to, an electron transport layer.
  • the organic electroluminescent device includes a first electrode and a second electrode on a substrate, and an organic layer between the electrodes, which may be a multi-layered structure.
  • the organic material layer may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
  • the substrate uses a substrate for a conventional organic light-emitting display, such as glass, a polymer material, and a glass and polymer material with TFT components.
  • a substrate for a conventional organic light-emitting display such as glass, a polymer material, and a glass and polymer material with TFT components.
  • the anode material may be a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), tin dioxide (SnO 2 ), or zinc oxide (ZnO), or may be a metal such as silver and its alloy, aluminum or its alloy.
  • the material may also be an organic conductive material such as PEDOT, and a multilayer structure of the above materials.
  • the cathode material may be selected from, but not limited to, a magnesium-silver mixture, a metal such as LiF/Al, ITO, a metal mixture, an oxide.
  • the organic electroluminescent device may further include a hole transport layer and a hole injection layer between the light emitting layer and the anode, and these layers may be, but not limited to, I-HT-1 to I-HT-34 listed below. A combination of one or more compounds.
  • the device light-emitting layer may comprise a host material and a luminescent dye, wherein the host may be, but is not limited to, a combination of one or more compounds of I-BFH-1 to I-BFH-14 listed below.
  • the luminescent dye can be, but is not limited to, a combination of one or more compounds of I-BFD-1 to I-BFD-9 listed below.
  • the organic material layer may include an electron transport layer, and a hole blocking layer between the light emitting layer and the electron transport layer.
  • the hole blocking layer and electron transport layer material may be, but not limited to, a combination of one or more compounds of I-ET-1 to I-ET-58 listed below.
  • the organic electroluminescent device may further include an electron injecting layer between the electron transporting layer and the cathode, and the electron injecting layer material includes, but is not limited to, a combination of one or more of the following.
  • the compound of the present invention may be a compound represented by the following formula (II).
  • L II is a substituted or unsubstituted C6-C18 arylene group
  • R II 1 is the following group
  • X II 1 to X II 5 are the same or different from each other, and X II 1 and X II 5 each independently represent a nitrogen atom or CH, and X II 2 to X II 4 each independently represent a nitrogen atom or CR II 4 , R II 4 represents a group selected from H, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl; R II 4 When the number is two or more, a plurality of R II 4 are the same or different from each other, or adjacent R II 4 is fused with a linked benzene ring to form a C6-C30 aryl or heteroaryl group, and * represents a group with L II Connection site,
  • R II 2 is selected from the group consisting of H, cyano, substituted or unsubstituted C1-C12 alkyl, C1-C12 alkoxy, hydroxy, amino, substituted or unsubstituted C6-C30 arylamino, substituted Or an unsubstituted C3 to C30 heteroarylamino group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group,
  • R II 3 is selected from the group consisting of C1-C12 alkyl, C1-C12 alkoxy, hydroxy, amino, C6-C30 arylamino, C3-C30 heteroarylamino, C6-C30 aryl, C3 ⁇ C30 heteroaryl,
  • R II 2 and R II 3 are each optionally fused independently to the attached benzene ring to form a C9-C30 aryl or heteroaryl group, the aryl or heteroaryl group formed optionally being 0, 1, 2 3, 4 or 5 each independently selected from substituted or unsubstituted C1-C12 alkyl, halogen, cyano, nitro, hydroxy, silane, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted Substituted by a substituent in the C3 to C30 heteroaryl group;
  • N2 is an integer from 1 to 5
  • M2 is an integer from 0 to 4,
  • aryl or heteroaryl group is optionally substituted by 0, 1, 2, 3 or 4 substituents each independently selected from a C1 to C12 alkyl group, a C6 to C30 aryl group, and a C3 to C30 heteroaryl group. Replace.
  • the present invention selects a group having a strong electron affinity. For example, a pyridyl group, a pyrimidinyl group, a quinolyl group, a triazinyl group or the like.
  • the compound of the present invention introduces a novel quinazoline-triazole mother nucleus having a large conjugated structure, and introduces an electron-deficient group such as a pyrimidine, a triazine or a derivative thereof, thereby making it high.
  • the electron affinity is thus closer to the work function of the cathode material, allowing the material to easily get electrons from the cathode with strong electron injectability.
  • the compound of the invention has a very good coplanar conjugated structure, so that the compound molecules can fully undergo ⁇ - ⁇ interaction between groups in the solid state, thereby facilitating the transfer of electrons between the molecules of the material, so that The material has a very high electron mobility. Therefore, the organic electroluminescent device using the above compound of the present invention has higher current efficiency and lower driving voltage than the prior art.
  • R II 1 is preferably selected from the group consisting of a triazinyl group, a pyrimidinyl group, a quinazolinyl group, a pyridyl group, a pyrazinyl group, an isoquinolyl group, a 1,5-pyridinopyridinyl group, a quinolyl group, a porphyrin group.
  • quinoxalinyl these groups are optionally substituted by one or more groups selected from the group consisting of ethyl, t-butyl, phenyl, naphthyl, biphenyl, pyridyl, phenylpyridyl, pyridine
  • the phenyl group is preferably a phenyl group, a naphthyl group, a biphenyl group, a pyridyl group, a phenylpyridyl group or a pyridylphenyl group.
  • R II 1 is preferably an electron-deficient aromatic heterocyclic ring, more preferably an aromatic heterocyclic ring having a Hammett value of more than 0.2, and thus a R II 1 pair of compounds as a substituent of the compound of the present invention as an electron transporting material.
  • Excellent performance has contributed greatly to this, presumably because these electron-deficient aromatic heterocycles are beneficial for improving the electron injection and migration capabilities of materials.
  • the Hammett value is a measure of the charge affinity for a particular group and is a measure of an electron withdrawing group (positive Hammett value) or an electron donating group (negative Hammett value).
  • the Hammett equation is described in more detail in Thomas H. Lowry and Katheleen Schueller Richardson, "Mechanism and Theory In Organic Chemistry", New York, 1987, pages 143-151, which is incorporated herein by reference.
  • At least one R II 1 is a substituted or unsubstituted triazinyl, pyrazinyl, isoquinolyl, 1,5-pyridinopyridinyl or quinoxalinyl group, more preferably at least one R II 1 is a substituted or unsubstituted triazinyl or pyrazinyl group, and further preferably at least one R II 1 is a substituted or unsubstituted triazinyl group.
  • the triazinyl, pyrazinyl, isoquinolyl, 1,5-pyridinopyridinyl or quinoxalinyl is optionally substituted by one or more groups selected from the group consisting of phenyl, naphthyl, and phenyl. Phenyl, pyridyl, phenylpyridyl, pyridylphenyl, phenanthryl.
  • R II 1 By including R II 1 as described above, the electron injectability of the above compound of the present invention is further improved, and thus the current efficiency of the organic electroluminescence device using the above compound of the present invention is further improved.
  • R II 2 is preferably selected from H, cyano, substituted or unsubstituted C1-C12 alkyl, C1-C12 alkoxy, hydroxy, amino, substituted or unsubstituted C6-C30 arylamino, substituted Or an unsubstituted C3 to C30 heteroarylamino group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted C15-C30 aryl group, or a substituted or unsubstituted C12-C30 heteroaryl group.
  • R II 2 is selected from H, a substituted or unsubstituted C1 to C12 alkyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted C15-C30 aryl group, a substituted or unsubstituted C12 ⁇ .
  • One of the C30 heteroaryl groups further preferably selected from the group consisting of substituted or unsubstituted:
  • * indicates the bonding position with the mother nucleus, and the expression pattern of the ring structure "-" is crossed, indicating that the connection site is located at any position on the ring structure that can be bonded.
  • R II 2 it is advantageous to increase the intermolecular ⁇ - ⁇ conjugation and increase the carrier mobility, thereby further reducing the driving voltage of the device when the compound is used as an electron transporting material.
  • L II is preferably one of a substituted or unsubstituted phenylene group, a naphthylene group, and a phenanthrylene group, and more preferably a phenylene group.
  • n2 is preferably 1 or 2, and more preferably 1.
  • the formula (II) is preferably selected from the group consisting of the formula (II-1), (II-2) or (II-3):
  • R II 4 is selected from the group consisting of hydrogen, C1-C12 alkyl, C1-C12 alkoxy, halogen, cyano, nitro, hydroxy, silyl, amino, substituted or unsubstituted C6-C30 arylamino, substituted or not a substituted C3 to C30 heteroarylamino group, a substituted or unsubstituted C6-C30 aryl group, one of a substituted or unsubstituted C3 to C30 heteroaryl group;
  • R II 1 to R II 3 and m2 are the same as defined in the formula (II).
  • m2 is preferably 0 or 1.
  • the substituent of R II 1 is preferably a phenyl group, and more preferably the above compound contains a 3,5-diphenyltriazinyl group.
  • an organic electroluminescence device using the compound also has an advantage that the driving voltage is slightly lowered.
  • the above compound is preferably a compound selected from the structures shown by the following II-C1 to II-C34:
  • the present invention also provides the use of the above compound in an organic electroluminescent device.
  • the compound can be used as, but not limited to, an electron transport layer material.
  • the introduction of the compound of the present invention as an electron transporting material into an organic electroluminescent device can significantly improve the performance of the device.
  • the compound of the present invention can also be applied to an organic electronic device, which may, for example, be an organic electroluminescence device, a lighting element, an organic thin film transistor, an organic field effect transistor, an organic thin film solar cell, an information tag, Large-area sensors such as electronic artificial skin sheets and sheet-type scanners, electronic paper, and organic EL panels.
  • an organic electronic device which may, for example, be an organic electroluminescence device, a lighting element, an organic thin film transistor, an organic field effect transistor, an organic thin film solar cell, an information tag, Large-area sensors such as electronic artificial skin sheets and sheet-type scanners, electronic paper, and organic EL panels.
  • an organic electroluminescent device comprising a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode, characterized in that The above compound is contained in the organic layer.
  • an organic layer such as an electron injecting layer, an electron transporting layer, a light emitting layer, a hole transporting layer, or a hole injecting layer, which contains the compound of the present invention, is usually contained.
  • the organic layer can be used as, but not limited to, an electron transport layer.
  • such a compound containing an electron-deficient group structure such as quinazoline-triazole has a large conjugated structure, that is, a quinazoline-triazole structure, thereby being used as an electron transporting material.
  • a good electron injection and transmission performance is achieved, and an organic electroluminescent device having a low driving voltage and high luminous efficiency can be obtained.
  • An organic OLED display device generally includes a first organic material and a second electrode, and an organic material layer between the electrodes.
  • the organic material can be further divided into a plurality of regions.
  • the organic material layer may include a hole transporting region, a light emitting layer, and an electron transporting region.
  • the structure and preparation of the organic electroluminescent device of the present invention are not particularly different from those of the prior art except for the use of the compound of the present invention, and generally include the following elements and related preparation steps.
  • a substrate can be used below the first electrode or above the second electrode.
  • the substrates are all glass or polymer materials having mechanical strength, thermal stability, water repellency, and transparency.
  • a thin film transistor (TFT) may be provided on the substrate for the display.
  • the first electrode may be formed by sputtering or depositing a material used as the first electrode on the substrate.
  • an oxide transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2 ), or zinc oxide (ZnO), and any combination thereof may be used.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • SnO 2 tin oxide
  • ZnO zinc oxide
  • magnesium Mg
  • silver (Ag) silver
  • Al aluminum
  • Al-lithium (Al-Li) aluminum-lithium (Al-Li)
  • magnesium-indium (Mg-In) magnesium-silver
  • a metal or alloy such as (Mg-Ag) and any combination therebetween.
  • the organic material layer may be formed on the electrode by vacuum thermal evaporation, spin coating, printing, or the like.
  • the compound used as the organic material layer may be an organic small molecule, an organic macromolecule, and a polymer, and a combination thereof.
  • the hole transporting region is located between the anode and the luminescent layer.
  • the hole transporting region may be a single-layered hole transporting layer (HTL), including a single-layer hole transporting layer containing only one compound and a single-layered hole transporting layer containing a plurality of compounds.
  • the hole transporting region may also be a multilayer structure including at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron blocking layer (EBL).
  • HIL hole injection layer
  • HTL hole transport layer
  • EBL electron blocking layer
  • the material of the hole transporting region may be selected from, but not limited to, a phthalocyanine derivative such as CuPc, a conductive polymer or a polymer containing a conductive dopant such as polyphenylenevinylene, polyaniline/dodecylbenzenesulfonic acid (Pani).
  • a phthalocyanine derivative such as CuPc
  • a conductive polymer or a polymer containing a conductive dopant such as polyphenylenevinylene, polyaniline/dodecylbenzenesulfonic acid (Pani).
  • the hole injection layer is located between the anode and the hole transport layer.
  • the hole injection layer may be a single compound material or a combination of a plurality of compounds.
  • the hole injection layer may be one or more of the above-mentioned II-HT-1 to II-HT-34, or one or more of the following II-HI-1 to II-HI-3.
  • Compounds; one or more of the following II-HI-1 to II-HI-3 may also be doped with one or more compounds of II-HT-1 to II-HT-34.
  • the luminescent layer includes a luminescent dye (ie, a dopant) that can emit spectra of different wavelengths, and can also include a host material.
  • the luminescent layer may be a single luminescent layer that emits a single color such as red, green, or blue.
  • a plurality of monochromatic light-emitting layers of different colors may be arranged in a plane according to a pixel pattern, or may be stacked to form a color light-emitting layer. When the light-emitting layers of different colors are stacked together, they may be spaced apart from each other or may be connected to each other.
  • the luminescent layer may also be a single color luminescent layer capable of simultaneously emitting different colors such as red, green, and blue.
  • the luminescent layer material may be a different material such as a fluorescent electroluminescent material, a phosphorescent electroluminescent material, or a thermally activated delayed fluorescent luminescent material.
  • a fluorescent electroluminescent material a phosphorescent electroluminescent material
  • a thermally activated delayed fluorescent luminescent material a thermally activated delayed fluorescent luminescent material.
  • a single illuminating technique can be used, or a combination of a plurality of different illuminating technologies can be employed.
  • These different luminescent materials classified by technology can emit light of the same color or emit light of different colors.
  • the luminescent layer employs a phosphorescence photoluminescence technique.
  • the luminescent layer host material is selected from, but not limited to, a combination of one or more of II-GPH-1 to II-GPH-80.
  • the luminescent layer employs a phosphorescence photoluminescence technique.
  • the luminescent layer phosphorescent dopant may be selected from, but not limited to, a combination of one or more of II-GPD-1 to II-GPD-47 listed below.
  • the luminescent layer employs a phosphorescence photoluminescence technique.
  • the luminescent layer host material is selected from, but not limited to, a combination of one or more of II-RH-1 to II-RH-31.
  • the luminescent layer employs a phosphorescence photoluminescence technique.
  • the luminescent layer phosphorescent dopant may be selected from, but not limited to, a combination of one or more of II-RPD-1 to II-RPD-28 listed below.
  • the luminescent layer employs a phosphorescence photoluminescence technique.
  • the luminescent layer phosphorescent dopant may be selected from, but not limited to, a combination of one or more of II-YPD-1 to II-YPD-11 listed below.
  • the luminescent layer employs a technique of fluorescent electroluminescence.
  • the luminescent layer fluorescent host material may be selected from, but not limited to, a combination of one or more of II-BFH-1 to II-BFH-17 listed below.
  • the luminescent layer employs a technique of fluorescent electroluminescence.
  • the luminescent layer fluorescent dopant may be selected from, but not limited to, a combination of one or more of II-BFD-1 to II-BFD-12 listed below.
  • the OLED organic material layer may further include an electron transport region between the light emitting layer and the cathode.
  • the electron transporting region may be a single layer structured electron transporting layer (ETL) comprising a single layer electron transporting layer containing only one compound and a single layer electron transporting layer containing a plurality of compounds.
  • the electron transporting region may also be a multilayer structure including at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL).
  • EIL electron injection layer
  • ETL electron transport layer
  • HBL hole blocking layer
  • the electron transport layer material may be selected from, but not limited to, a combination of one or more of II-ET-1 to II-ET-58 listed below.
  • An electron injecting layer between the electron transporting layer and the cathode may also be included in the device, and the electron injecting layer material includes, but is not limited to, a combination of one or more of the following.
  • a method of forming each of the above layers is known, and for example, a vapor deposition method, a sputtering method, a solution coating method, or the like can be used.
  • the compound of the present invention can be represented by the following formula (III):
  • a III in the formula (III) is represented by the following formula (III-a):
  • Ar III is selected from the group consisting of a substituted or unsubstituted group of an aryl group of C6-C60 or a heteroaryl group of C3-C50;
  • R III 1 -R III 4 are each independently selected from the group consisting of H, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C6-C60 aryl, Substituted or unsubstituted C3-C50 heteroaryl;
  • X III 1 -X III 5 are each independently selected from C, CH or N, and at least one is N;
  • N3 is an integer from 0 to 4, and R III 7 is selected from one of the group consisting of a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted group.
  • the C3-C50 heteroaryl group may be the same or different from each other when R III 7 is plural, and a plurality of R III 7 may be fused and linked;
  • L III is selected from substituted or unsubstituted arylene groups of C6-C30;
  • the substituent groups are each independently selected from the group consisting of halogen, cyano, nitro, C 1 -C 10 alkyl or cycloalkyl, C 2 -C 10 alkenyl, C 1 - alkoxy or thioalkoxy group of C 6, C 6 -C 30 aryl group, C 3 -C 30 heteroaryl group, C 6 -C 30 aromatic hydrocarbon monocyclic or polycyclic aromatic hydrocarbon group, One of a C 3 -C 30 monocyclic heteroaryl or fused ring heteroaryl group.
  • formula (III) is preferably represented by the following formula (III-2):
  • X III 1 -X III 5 are each independently selected from C, CH or N, and at least one is N; preferably, two or three of X III 1 -X III 5 are N;
  • n3 is an integer of 0-4, preferably, n3 is an integer of 0-3;
  • R III 7 is selected from one of the following groups: substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted
  • the aryl, substituted or unsubstituted C3-C50 heteroaryl group of C6-C60 may be the same or different from each other when R III 7 is plural, and a plurality of R III 7 may be fused and linked.
  • group A III in the above formula (III) and formula (III-2) is preferably the following structural formula (III-a-1) or (III-a-2), wherein m3 is 0-3
  • R III 7 has the same definition as in the above formula (III-a):
  • group A III in the above formula (III) and formula (III-2) is preferably the following structural formula (III-a-11) or (III-a-12):
  • R III 5 , R III 6 are each independently selected from the group consisting of H, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C6-C60 aryl, Substituted or unsubstituted C3-C50 heteroaryl.
  • formula (III) is preferably represented by the following formula (III-4-1) or formula (III-4-2), wherein m3 is an integer of 0-3, A III , Ar III , R III The definitions of 1 - R III 4 and R III 7 are the same as defined in the formula (III).
  • formula (III) is preferably represented by the following formula (III-5-1) or formula (III-5-2), wherein A III , Ar III , R III 1 -R III 4 , R III
  • the definition of 7 is the same as defined in the formula (III).
  • R III 1 -R III 4 described in the formula (III) are each independently selected from H or a group selected from substituted or unsubstituted groups: methyl, ethyl, n-propyl, isopropyl.
  • Base n-butyl, isobutyl, sec-butyl, tert-butyl, 2-methylbutyl, n-pentyl, sec-pentyl, cyclopentyl, neopentyl, n-hexyl, cyclohexyl, neohexyl, N-heptyl, cycloheptyl, n-octyl, cyclooctyl, 2-ethylhexyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, phenyl, naphthyl, anthracene Benzo, benzofluorenyl, phenan
  • Ar III described in the formula (III) is selected from the group consisting of a substituted or unsubstituted group: a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenyl group, a phenanthryl group, a benzophenanyl group, a fluorenyl group, Grotto, fluorenyl, fluoranthyl, tetraphenyl, pentacene, benzofluorenyl, biphenyl, phenyl, terphenyl, triphenyl, tetraphenyl, fluorenyl, Spirobifluorenyl, dihydrophenanthrenyl, indanyl, tetrahydroindenyl, cis or trans indenyl, trimeric fluorenyl, isotrimeric fluorenyl, spirotrimeric fluorenyl, spiro three Polyfluorenyl,
  • the compound of the formula (III) of the present invention may preferably be the following specific structural compounds: III-C1 to III-C218, and these compounds are only representative:
  • the compound of the invention has high electron affinity and thus has strong electron accepting ability and is suitable for use as an electron transporting material, and the application field is not limited to the organic electroluminescent material, and can also be applied.
  • the application field is not limited to the organic electroluminescent material, and can also be applied.
  • optical sensors solar cells, lighting components, organic thin film transistors, organic field effect transistors, organic thin film solar cells, information tags, electronic artificial skin sheets, sheet-type scanners and other large area sensors, electronic paper and other technical fields.
  • the present invention also provides an organic electroluminescent device comprising a substrate comprising a first electrode, a second electrode, and one or more organic layers interposed between the first electrode and the second electrode, wherein
  • the organic layer comprises the above formula (III), formula (III-2), formula (III-2-1)-(III-2-2), and formula (III-3-1)-(III-3 -4) a compound of any one of the formula (III-4-1)-(III-4-2) and the formula (III-5-1)-(III-5-2).
  • an embodiment of the present invention provides an organic electroluminescence device including a substrate, and an anode layer, a plurality of light-emitting functional layers, and a cathode layer sequentially formed on the substrate; the light-emitting functional layer
  • the hole injecting layer, the hole transporting layer, the light emitting layer, and the electron transporting layer are formed on the anode layer, and the hole transporting layer is formed in the hole injecting layer
  • the cathode layer is formed on the electron transport layer, and the light transport layer is between the hole transport layer and the electron transport layer; wherein the electron transport layer contains the above formula ( The compound of the formula of the invention shown in III).
  • the OLED device prepared by using the compound of the invention has low starting voltage, high luminous efficiency and better service life, and can meet the requirements of high performance materials for current panel manufacturers.
  • the compound of the formula of the present invention adopts a novel quinazoline triazole as a core structure, and the compound of the present invention is compared with a structure of a single oxazole, thiazole, imidazole, triazole or triazine which is commonly used in the prior art.
  • the structure has a relatively stronger electron deficient property, thus facilitating the injection of electrons.
  • the large conjugated ring structure in the compound of the present invention increases the plane conjugation of the molecule, thereby contributing to an increase in electron mobility. From the structural characteristics of the above two aspects, the molecules as a whole can exhibit good electron injection and migration properties. Therefore, when the compound of the present invention is used as an electron transport layer material in an organic electroluminescence device, electron injection and migration efficiency in the device can be effectively improved, thereby ensuring an excellent effect of the device to obtain high luminous efficiency and low starting voltage.
  • the preparation process of the compound of the invention is simple and easy, and the raw materials are easily available, which is suitable for mass production amplification.
  • the OLED includes a first organic material and a second electrode, and an organic material layer between the electrodes.
  • the organic material can be further divided into a plurality of regions.
  • the organic material layer may include a hole transporting region, a light emitting layer, and an electron transporting region.
  • a substrate can be used below the first electrode or over the second electrode.
  • the substrates are all glass or polymer materials having mechanical strength, thermal stability, water repellency, and transparency.
  • a thin film transistor (TFT) may be provided on the substrate for the display.
  • the first electrode may be formed by sputtering or depositing a material used as the first electrode on the substrate.
  • an oxide transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), tin dioxide (SnO 2 ), or zinc oxide (ZnO), and any combination thereof may be used.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • SnO 2 tin dioxide
  • ZnO zinc oxide
  • magnesium Mg
  • silver (Ag) silver
  • Al aluminum
  • Al-lithium (Al-Li) aluminum-lithium (Al-Li)
  • magnesium-indium (Mg-In) magnesium-silver
  • a metal or alloy such as (Mg-Ag) and any combination therebetween.
  • the organic material layer may be formed on the electrode by vacuum thermal evaporation, spin coating, printing, or the like.
  • the compound used as the organic material layer may be an organic small molecule, an organic macromolecule, and a polymer, and a combination thereof.
  • the hole transporting region is located between the anode and the luminescent layer.
  • the hole transporting region may be a single-layered hole transporting layer (HTL), including a single-layer hole transporting layer containing only one compound and a single-layered hole transporting layer containing a plurality of compounds.
  • the hole transporting region may also be a multilayer structure including at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron blocking layer (EBL).
  • HIL hole injection layer
  • HTL hole transport layer
  • EBL electron blocking layer
  • the material of the hole transporting region may be selected from, but not limited to, a phthalocyanine derivative such as CuPc, a conductive polymer or a polymer containing a conductive dopant such as polyphenylenevinylene, polyaniline/dodecylbenzenesulfonic acid (Pani).
  • a phthalocyanine derivative such as CuPc
  • a conductive polymer or a polymer containing a conductive dopant such as polyphenylenevinylene, polyaniline/dodecylbenzenesulfonic acid (Pani).
  • the hole injection layer is located between the anode and the hole transport layer.
  • the hole injection layer may be a single compound material or a combination of a plurality of compounds.
  • the hole injection layer may employ one or more of the above-mentioned compounds of III-HT-1 to III-HT-34, or one or more of the following III-HI-1 to III-HI-3.
  • Compounds; one or more compounds of III-HT-1 to III-HT-3 may also be doped with one or more of the following III-HI-1 to III-HI-3.
  • the luminescent layer includes a luminescent dye (ie, a dopant) that can emit spectra of different wavelengths, and can also include a host material.
  • the luminescent layer may be a single luminescent layer that emits a single color such as red, green, or blue.
  • a plurality of monochromatic light-emitting layers of different colors may be arranged in a plane according to a pixel pattern, or may be stacked to form a color light-emitting layer. When the light-emitting layers of different colors are stacked together, they may be spaced apart from each other or may be connected to each other.
  • the luminescent layer may also be a single color luminescent layer capable of simultaneously emitting different colors such as red, green, and blue.
  • the luminescent layer material may be a different material such as a fluorescent electroluminescent material, a phosphorescent electroluminescent material, or a thermally activated delayed fluorescent luminescent material.
  • a fluorescent electroluminescent material a phosphorescent electroluminescent material
  • a thermally activated delayed fluorescent luminescent material a thermally activated delayed fluorescent luminescent material.
  • a single illuminating technique can be used, or a combination of a plurality of different illuminating technologies can be employed.
  • These different luminescent materials classified by technology can emit light of the same color or emit light of different colors.
  • the luminescent layer employs a technique of fluorescent electroluminescence.
  • the luminescent layer fluorescent host material may be selected from, but not limited to, a combination of one or more of III-BFH-1 to III-BFH-17 listed below.
  • the luminescent layer employs a technique of fluorescent electroluminescence.
  • the luminescent layer fluorescent dopant may be selected from, but not limited to, a combination of one or more of III-BFD-1 to III-BFD-12 listed below.
  • the organic EL light-emitting device of the present invention includes an electron transporting region between the light-emitting layer and the cathode.
  • the electron transporting region may be a single layer structured electron transporting layer (ETL) comprising a single layer electron transporting layer containing only one compound and a single layer electron transporting layer containing a plurality of compounds.
  • the electron transporting region may also be a multilayer structure including at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL).
  • EIL electron injection layer
  • ETL electron transport layer
  • HBL hole blocking layer
  • the electron transporting region may also be formed by applying a compound of the present invention to a multilayer structure including at least one of an electron injecting layer (EIL), an electron transporting layer (ETL), and a hole blocking layer (HBL), of course, an electron transporting region
  • EIL electron injecting layer
  • ETL electron transporting layer
  • HBL hole blocking layer
  • An electron injecting layer between the electron transporting layer and the cathode may also be included in the device, and the electron injecting layer material includes, but is not limited to, a combination of one or more of the following.
  • the compound of the present invention may be a compound represented by the following formula (IV).
  • L IV is a single bond, a substituted or unsubstituted C6-C30 arylene group or a substituted or unsubstituted C3-C30 heteroarylene group, and the substituent is selected from a C1-C10 alkyl group, C6 ⁇ An arylene group of C14 or a heteroarylene group of C3 to C14; m4 is an integer of 1 to 4; and R IV 1 and R IV 2 are each independently H, a C6 to C30 aryl group or a C3 to C30 heteroaryl group.
  • Ar IV is the following structure:
  • X IV 1 to X IV 6 are C, CR IV 3 or N, and at least one X is N, R IV 3 is H, C6 to C30 aryl or C3 to C30 heteroaryl having 1 to 3 hetero atoms. base.
  • -L IV -Ar IV is not a pyridyl group, a phenylpyridyl group or a pyridylphenyl group.
  • the inventors have found that when a quinazoline triazole compound is used as an organic layer material of an organic electroluminescence device, device efficiency is remarkably improved as compared with the prior art.
  • the specific reason why the compound of the present invention having a quinazoline-triazole parent core is excellent as an electron-transporting material is not clear, and it is presumed that it may be due to the following reasons: First, the present invention selects a group having a strong electron affinity.
  • the compound of the present invention introduces a novel quinazoline and triazole having a large conjugated structure.
  • the mother nucleus introduces electron-deficient groups such as pyrimidine, triazine and its derivatives, so that it has a high electron affinity and thus is closer to the work function of the cathode material, so that the material can be easily removed from the cathode.
  • the compound of the present invention has a very good coplanar conjugated structure, so that the compound molecules can fully undergo ⁇ - ⁇ interaction between groups in the solid state, thereby facilitating electrons in The transfer of materials between molecules makes these materials have very high electron mobility.
  • examples of the aryl group of C6 to C30 include a phenyl group, a biphenyl group, a naphthyl group, an anthracenyl group, a phenanthryl group, a fluorenyl group and the like, and among them, a phenyl group, a naphthyl group, and more preferably a benzene group are preferable. base.
  • examples of the heteroaryl group of C3 to C30 include a nitrogen-containing heteroaryl group, an oxygen-containing heteroaryl group, a sulfur-containing heteroaryl group, and the like, and specific examples thereof include a pyridyl group and a pyrimidine.
  • the structural formula (IV) is preferably selected from any one of the structural formulae (IV-1) to (IV-3):
  • N4 is an integer of 1-4.
  • the structural formula (IV) is more preferably selected from any one of the structural formulae (IV-2) to (IV-3), and most preferably the structural formula (IV-3).
  • structural formula (IV) as structural formula (IV-2) or (IV-3) (particularly structural formula (IV-3)), ie, defining Ar IV as a R IV 3 substituted or unsubstituted pyrimidinyl group or
  • the triazine group (especially the triazine group) can further improve the current efficiency of the organic electroluminescent device using the compound of the present invention and lower the landing voltage.
  • L IV is preferably a substituted or unsubstituted phenylene group selected from one of a phenyl group, a naphthyl group, a phenanthryl group, and a cyanophenyl group.
  • R IV 1 is preferably a phenyl group, a naphthyl group, a phenanthryl group, a biphenyl group or a 9,9-dimethylfluorenyl group.
  • m4 is preferably 1, and R IV 2 is preferably H or a phenyl group.
  • R IV 3 is preferably selected from a phenyl group, a naphthyl group or a biphenyl group, and more preferably a phenyl group.
  • the conjugated structure can be further enlarged, facilitating the transfer of electrons between the molecules of the material, and the compound of the present invention has a higher electron mobility.
  • Ar IV is preferably a disubstituted pyrimidinyl group, a quinazolinyl group or a triazinyl group, more preferably a disubstituted pyrimidinyl group or a triazinyl group, and most preferably a disubstituted triazinyl group.
  • preferred examples of the compound of the present invention include compounds of the structures shown below, but are not limited to these compounds:
  • An organic OLED display device generally includes a first organic material and a second electrode, and an organic material layer between the electrodes.
  • the organic material can be further divided into a plurality of regions.
  • the organic material layer may include a hole transporting region, a light emitting layer, and an electron transporting region.
  • the structure and preparation of the organic electroluminescent device of the present invention are not particularly different from those of the prior art except for the use of the compound of the present invention, and generally include the following elements and related preparation steps.
  • a substrate can be used below the first electrode or above the second electrode.
  • the substrates are all glass or polymer materials having mechanical strength, thermal stability, water repellency, and transparency.
  • a thin film transistor (TFT) may be provided on the substrate for the display.
  • the first electrode may be formed by sputtering or depositing a material used as the first electrode on the substrate.
  • an oxide transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2 ), or zinc oxide (ZnO), and any combination thereof may be used.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • SnO 2 tin oxide
  • ZnO zinc oxide
  • magnesium Mg
  • silver (Ag) silver
  • Al aluminum
  • Al-lithium (Al-Li) aluminum-lithium (Al-Li)
  • magnesium-indium (Mg-In) magnesium-silver
  • a metal or alloy such as (Mg-Ag) and any combination therebetween.
  • the organic material layer may be formed on the electrode by vacuum thermal evaporation, spin coating, printing, or the like.
  • the compound used as the organic material layer may be an organic small molecule, an organic macromolecule, and a polymer, and a combination thereof.
  • the hole transporting region is located between the anode and the luminescent layer.
  • the hole transporting region may be a single-layered hole transporting layer (HTL), including a single-layer hole transporting layer containing only one compound and a single-layered hole transporting layer containing a plurality of compounds.
  • the hole transporting region may also be a multilayer structure including at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron blocking layer (EBL).
  • HIL hole injection layer
  • HTL hole transport layer
  • EBL electron blocking layer
  • the material of the hole transporting region may be selected from, but not limited to, a phthalocyanine derivative such as CuPc, a conductive polymer or a polymer containing a conductive dopant such as polyphenylenevinylene, polyaniline/dodecylbenzenesulfonic acid (Pani).
  • a phthalocyanine derivative such as CuPc
  • a conductive polymer or a polymer containing a conductive dopant such as polyphenylenevinylene, polyaniline/dodecylbenzenesulfonic acid (Pani).
  • the hole injection layer is located between the anode and the hole transport layer.
  • the hole injection layer may be a single compound material or a combination of a plurality of compounds.
  • the hole injection layer may employ one or more of the above-mentioned IV-HT-1 to IV-HT-34 compounds, or one or more of the following IV-HI-1 to IV-HI-3 Compounds; one or more of the following IV-HI-1 to IV-HI-3 may also be doped with one or more compounds of IV-HT-1 to IV-HT-34.
  • the luminescent layer includes a luminescent dye (ie, a dopant) that can emit spectra of different wavelengths, and can also include a host material.
  • the luminescent layer may be a single luminescent layer that emits a single color such as red, green, or blue.
  • a plurality of monochromatic light-emitting layers of different colors may be arranged in a plane according to a pixel pattern, or may be stacked to form a color light-emitting layer. When the light-emitting layers of different colors are stacked together, they may be spaced apart from each other or may be connected to each other.
  • the luminescent layer may also be a single color luminescent layer capable of simultaneously emitting different colors such as red, green, and blue.
  • the luminescent layer material may be a different material such as a fluorescent electroluminescent material, a phosphorescent electroluminescent material, or a thermally activated delayed fluorescent luminescent material.
  • a fluorescent electroluminescent material a phosphorescent electroluminescent material
  • a thermally activated delayed fluorescent luminescent material a thermally activated delayed fluorescent luminescent material.
  • a single illuminating technique can be used, or a combination of a plurality of different illuminating technologies can be employed.
  • These different luminescent materials classified by technology can emit light of the same color or emit light of different colors.
  • the luminescent layer employs a technique of fluorescent electroluminescence.
  • the luminescent layer fluorescent host material may be selected from, but not limited to, a combination of one or more of IV-BFH-1 to IV-BFH-17 listed below.
  • the luminescent layer employs a technique of fluorescent electroluminescence.
  • the luminescent layer fluorescent dopant may be selected from, but not limited to, a combination of one or more of IV-BFD-1 to IV-BFD-12 listed below.
  • the organic EL light-emitting device of the present invention includes an electron transporting region between the light-emitting layer and the cathode.
  • the electron transporting region may be a single layer structured electron transporting layer (ETL) comprising a single layer electron transporting layer containing only one compound and a single layer electron transporting layer containing a plurality of compounds.
  • the electron transporting region may also be a multilayer structure including at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL).
  • EIL electron injection layer
  • ETL electron transport layer
  • HBL hole blocking layer
  • the electron transporting region may also be formed by applying a compound of the present invention to a multilayer structure including at least one of an electron injecting layer (EIL), an electron transporting layer (ETL), and a hole blocking layer (HBL), of course, an electron transporting region
  • EIL electron injecting layer
  • ETL electron transporting layer
  • HBL hole blocking layer
  • An electron injecting layer between the electron transporting layer and the cathode may also be included in the device, and the electron injecting layer material includes, but is not limited to, a combination of one or more of the following.
  • a method of forming each of the above layers is known, and for example, a vapor deposition method, a sputtering method, a solution coating method, or the like can be used.
  • the various chemical materials used in the present invention such as petroleum ether, ethyl acetate, sodium sulfate, toluene, tetrahydrofuran, dichloromethane, acetic acid, potassium phosphate, sodium t-butoxide, etc., are all purchased from common chemical products on the market. Providers, including but not limited to Shanghai Titan Technology Co., Ltd. and Xiqiao Chemical Co., Ltd.
  • the mass spectrometer used for the determination of the following compounds was measured by a ZAB-HS mass spectrometer (manufactured by Micromass, UK). In the present invention, nuclear magnetic resonance was measured using a BRUKER 500 MHz magnetic resonance spectrometer (manufactured by BRUKER, Germany).
  • the compound I-1-1 (200 g, 1.03 mol) was added to a flask containing 2 L of ethanol, and benzaldehyde (120 g, 1.13 mol) was added dropwise with stirring at room temperature. After the addition was completed, the reaction was stirred for 30 minutes, and the obtained solid was filtered, respectively. Ethanol and n-hexane were rinsed and dried to give a yellow solid compound I-1-2 (184 g, 63%).
  • the compound II-1-1 (200 g, 1.03 mol) was added to a flask containing 2 L of ethanol, and 3-phenylbenzaldehyde (206 g, 1.13 mol) was added dropwise with stirring at room temperature, and the reaction was stirred for 30 minutes, and the mixture was filtered. The solid was washed with ethanol and n-hexane and dried to give a yellow solid compound II-2-4 (251 g, 68%).
  • Synthesis was carried out using a synthetic method similar to III-C1. The difference is that the first step reaction uses 4-aldehyde-dibenzothiophene instead of benzaldehyde to synthesize intermediate III-6-2; and compound III-6-3 replaces III-1-4 to synthesize intermediate III-6- 5; The last step was obtained as a white solid compound III-C72, m.p.: 735.22, found C/Z: 735.2.
  • Synthesis was carried out using a synthetic method similar to III-C1. The difference is that the first step of the reaction is to replace the benzaldehyde with the intermediate III-8-1 to synthesize the intermediate III-8-3 by a similar synthesis method; the third step is to replace the 2-chloro-4-phenyl quinazoline 2 -Chloro-4,6-diphenyl-1,3,5-triazine
  • the intermediate III-8-5 was synthesized by a similar method; the final step was to obtain a white solid compound III-C139 by a similar method. 703.25, measured value C/Z: 703.3.
  • intermediate IV-M1 the substitution reaction of 2,4-dichloroquinazoline with hydrazine hydrate is carried out to form intermediate IV-M1; in the second step, intermediate IV-M1 is firstly subjected to condensation reaction with substituted aldehyde, followed by iodobenzene acetate. Oxidation of the ring to form the intermediate IV-M2; the third step, the intermediate IV-M2 is used as the starting material and the boronic acid is reacted by Suzuki to form the intermediate IV-M3; in the fourth step, the intermediate IV-M3 is converted into the corresponding boric acid.
  • the pinacol ester compound IV-M4; the fifth step of the intermediate IV-M4 and the halogenated product are subjected to a Suzuki coupling reaction to obtain a product.
  • the compound IV-1-1 (15.8 g, 80 mol) was added to a flask containing 300 mL of ethanol, and the compound IV-3-1 (28.4 g, 90 mol) was added dropwise with stirring at room temperature, and the reaction was stirred for 30 minutes after the dropwise addition, TLC showed The reaction is complete.
  • 150 mL of ethanol solution in which iodobenzene acetate (30 g, 90 mmol) was dissolved was added dropwise to the reaction mixture, and after the completion of the dropwise addition, the reaction was further stirred for 3 hours (the solid was precipitated after the system was dissolved), and the reaction was completed by TLC. .
  • the precipitated solid was filtered, washed with n-hexane and dried toiel
  • the compounds I-ET-46 and I-ET-58 shown below were used as comparative materials.
  • the glass plate coated with the ITO transparent conductive layer is ultrasonicated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in an acetone:ethanol mixed solvent, baked in a clean environment to completely remove moisture, and used ultraviolet light. Cleaning with ozone and bombarding the surface with a low energy cation beam;
  • the above-mentioned glass substrate with an anode is placed in a vacuum chamber, and vacuum is applied until the pressure is less than 10 -5 Pa.
  • the hole transporting material I-HT-33 is steamed on the anode layer film by multi-source co-steaming.
  • the plating rate is 0.1 nm/s
  • the hole injecting material I-HT-32 is set at a rate of 7%
  • the total film thickness of the vapor deposition is 10 nm;
  • I-HT-33 was vacuum-deposited on the hole injection layer as the first hole transport layer of the device, the evaporation rate was 0.1 nm/s, and the total vapor deposition thickness was 40 nm;
  • I-HT-34 was vacuum evaporated on the first hole transport layer as the second hole transport layer of the device, the evaporation rate was 0.1 nm / s, and the total vapor deposition thickness was 10 nm;
  • the light-emitting layer of the device is vacuum-deposited on the second hole transport layer, and the light-emitting layer comprises a host material and a dye material, and the evaporation rate of the host material I-BFH-4 is adjusted to 0.1 nm/s by a multi-source co-evaporation method.
  • the dye I-BFD-4 evaporation rate is set at a ratio of 5%, and the total vapor deposition thickness is 20 nm;
  • I-ET-17 was vacuum-deposited on the first light-emitting layer as a hole blocking layer of the device, the evaporation rate was 0.1 nm/s, and the total vapor deposition thickness was 5 nm;
  • the evaporation rate of the electron transporting materials I-C1 to I-C95 or the comparative materials I-ET-46 and I-ET-58 of the present invention was adjusted to 0.1 nm/s by a multi-source co-evaporation method on the hole blocking layer. , set at a ratio of 100% to the evaporation rate of I-ET-57, and the total film thickness of the vapor deposition is 23 nm;
  • LiF having a thickness of 1 nm was vacuum-deposited on the electron transport layer (ETL) as an electron injection layer, and an Al layer having a thickness of 80 nm was used as a cathode of the device.
  • ETL electron transport layer
  • Examples I-1 to I-6 and Comparative Example I-1 were measured using a PR 750 photometer ST-86LA type luminance meter (Beijing Normal University Optoelectronic Instrument Factory) and a Keithley 4200 test system of Photo Research. And the driving voltage and current efficiency of the organic electroluminescent device prepared in I-2. Specifically, the voltage is raised at a rate of 0.1 V per second, and the voltage at which the luminance of the organic electroluminescent device reaches 1000 cd/m 2 , that is, the driving voltage, is measured, and the current density at this time is measured; the ratio of luminance to current density That is, current efficiency;
  • an organic electroluminescent device was prepared in accordance with the above-described preparation process of the organic electroluminescent device, and device performance test was carried out in accordance with the above-described organic electroluminescent device test method.
  • An organic electroluminescent device was obtained in the same manner as in Example I-1 except that the compound I-C1 was replaced with I-C22.
  • An organic electroluminescent device was obtained in the same manner as in Example I-1 except that the compound I-C1 was replaced with I-C31.
  • An organic electroluminescent device was obtained in the same manner as in Example I-1 except that the compound I-C1 was replaced with I-C63.
  • An organic electroluminescent device was obtained in the same manner as in Example I-4 except that I-ET-57 was not doped on the hole blocking layer, and evaporation was performed at a vapor deposition rate of 0.1 nm/s. C63 was used as an electron transporting material and had a total film thickness of 23 nm.
  • An organic electroluminescent device was prepared in the same manner as in Example I-3 except that I-C31 was vacuum-deposited on the light-emitting layer as a hole blocking layer of the device, and the evaporation rate was 0.1 nm/s, steamed. The total plating thickness was 5 nm.
  • An organic electroluminescent device was obtained in the same manner as in Example I-1 except that the compound I-C1 was replaced with I-ET-46.
  • An organic electroluminescent device was obtained in the same manner as in Example I-1 except that the compound C1 was replaced with I-ET-58.
  • Example I-5 shows that the compound of the present invention is used alone as an electron transporting material and the electron transporting material I-ET- in Comparative Example I-1 in the case of undoped LiQ (I-ET-57) as an electron transporting material.
  • the voltage is slightly lower and the current efficiency is slightly higher, thereby indicating that the compound of the present invention is not doped with LiQ. Satisfactory performance can also be achieved in the case of a simplified process.
  • Example I-6 shows the use of the material of the present invention as both a hole blocking material and an electron transporting material, and the use of I-ET-17 as a hole blocking material and the material of the present invention is only used as an electron transporting material, its photoelectric properties (voltage Basically consistent with efficiency). This simplifies the fabrication process of the device under the premise of ensuring photoelectric performance.
  • novel organic material of the present invention is an organic light-emitting material with good performance as an electron-transporting material of an organic electroluminescent device, and is expected to be popularized for commercial application.
  • the glass plate coated with the ITO transparent conductive layer is ultrasonicated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in an acetone:ethanol mixed solvent, baked in a clean environment to completely remove moisture, and used ultraviolet light. Cleaning with ozone and bombarding the surface with a low energy cation beam;
  • the above-mentioned glass substrate with an anode is placed in a vacuum chamber, vacuumed to a pressure of less than 10 -5 Pa, and the hole transporting material II-HT-28 is adjusted by multi-source co-steaming on the above anode film.
  • the plating rate is 0.1 nm/s
  • the hole injection material II-HI-2 evaporation rate is 7%
  • the total vapor deposition thickness is 10 nm;
  • the evaporation rate is 0.1 nm / s, the total thickness of the vapor deposition is 40 nm;
  • the second hole transport layer is vacuum-deposited on the first hole transport layer as the second hole transport layer of the device, the evaporation rate is 0.1 nm / s, and the total vapor deposition thickness is 10 nm;
  • the light-emitting layer of the device is vacuum-deposited on the second hole transport layer, and the light-emitting layer comprises a host material and a dye material, and the evaporation rate of the host material II-BFH-4 is adjusted to 0.1 nm/s by a multi-source co-steaming method.
  • the dye II-BFD-4 evaporation rate is set at a ratio of 5%, and the total thickness of the vapor deposition is 20 nm;
  • the electron transporting materials II-C1 to II-C32 or the comparative materials II-ET46 and II-ET58 of the present invention are adjusted to have an evaporation rate of 0.1 nm/s, and II-, by means of multi-source co-evaporation on the hole blocking layer.
  • ET-57 evaporation rate 100% ratio setting, total vapor deposition thickness is 23nm;
  • LiF having a thickness of 1 nm was vacuum-deposited on the electron transport layer (ETL) as an electron injection layer, and an Al layer having a thickness of 80 nm was used as a cathode of the device.
  • ETL electron transport layer
  • Examples II-1 to II-7 and Comparative Example II-1 were measured using Photo Research's PR 750 Optical Radiometer ST-86LA Luminance Meter (Beijing Normal University Optoelectronic Instrument Factory) and Keithley 4200 Test System.
  • the driving voltage and current efficiency of the organic electroluminescent device prepared in ⁇ II-2 Specifically, the voltage is raised at a rate of 0.1 V per second, and the voltage, that is, the driving voltage when the luminance of the organic electroluminescent device reaches 1000 cd/m 2 is measured, and the current density at this time is measured; the ratio of the luminance to the current density is For current efficiency;
  • an organic electroluminescent device was prepared in accordance with the above-described preparation process of the organic electroluminescent device, and device performance test was carried out in accordance with the above-described organic electroluminescent device test method.
  • An organic electroluminescent device was obtained in the same manner as in Example II-1 except that the compound II-C2 was replaced with II-C7.
  • An organic electroluminescent device was obtained in the same manner as in Example II-1 except that the compound II-C2 was replaced with II-C15.
  • An organic electroluminescent device was obtained in the same manner as in Example II-1 except that the compound II-C2 was replaced with II-C16.
  • An organic electroluminescent device was obtained in the same manner as in Example II-1 except that the compound II-C2 was replaced with II-C25.
  • An organic electroluminescent device was obtained in the same manner as in Example II-3 except that II-ET-17 was not deposited as a hole blocking layer of the device over the light-emitting layer.
  • An organic electroluminescent device was obtained in the same manner as in Example II-1 except that the compound II-C2 was replaced with II-C3.
  • An organic electroluminescent device was obtained in the same manner as in Example II-1 except that the compound II-C2 was replaced with II-ET-46.
  • An organic electroluminescent device was obtained in the same manner as in Example II-1 except that the compound II-C2 was replaced with II-ET-58.
  • Example II-1 The invention material II-C2 1000.00 3.71 9.56
  • Example II-2 The invention material II-C7 1000.00 3.69 9.67
  • Example II-3 The invention material II-C15 1000.00 3.83 9.45
  • Example II-4 The invention material II-C16 1000.00 3.86 9.34
  • Example II-5 The invention material II-C25 1000.00 4.34 7.57
  • Example II-6 The invention material II-C15 1000.00 3.67 9.49
  • Example II-7 The invention material II-C3 1000.00 3.79 9.26 Comparative Example II-1 Comparative Material II-ET-46 1000.00 4.49 7.30 Comparative Example II-2 Comparative Material II-ET-58 1000.00 4.43 7.47
  • the compound II-C25 of the present invention was used as an electron transporting material in Example II-5, and although an organic electroluminescent device having better performance than Comparative Examples II-1 and II-2 was also obtained, it was invented with Example II of the present invention.
  • -1 to II-4 are higher in voltage and lower in efficiency than II-7. This indicates that the introduction of an alkyl group at the position of the triazole is less favorable for the injection and transport of electrons than the mercapto, biphenyl or terphenyl.
  • novel organic material of the present invention is an organic light-emitting material with good performance as an electron-transporting material of an organic electroluminescent device, and is expected to be popularized for commercial application.
  • the glass plate coated with the ITO transparent conductive layer is ultrasonicated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in an acetone:ethanol mixed solvent, and baked in a clean environment to completely remove water, using ultraviolet light. Light and ozone cleaning, and bombard the surface with a low energy cation beam;
  • the above-mentioned glass substrate with an anode is placed in a vacuum chamber, and vacuum is applied until the pressure is less than 10 -5 Pa.
  • the hole transporting material III-HT-28 is adjusted by multi-source co-steaming on the above anode film.
  • the plating rate is 0.1 nm/s
  • the hole injection material III-HI-2 vapor deposition rate is 7%
  • the total vapor deposition thickness is 10 nm;
  • Vacuum-depositing III-HT-4 as a first hole transporting layer of the device on the hole injection layer the evaporation rate is 0.1 nm/s, and the total vapor deposition thickness is 40 nm;
  • a light-emitting layer of the device over the second hole transport layer, the light-emitting layer comprising a host material and a dye material, and adjusting the evaporation rate of the host material III-BFH-4 to 0.1 nm/s by multi-source co-evaporation , dye III-BFD-4 evaporation rate of 5% ratio setting, total deposition thickness of 20nm;
  • III-ET-17 was vacuum-deposited as a hole blocking layer of the device, the evaporation rate was 0.1 nm/s, and the total vapor deposition thickness was 5 nm;
  • the evaporation rate of representative compounds or comparative materials III-ET-9, III-ET-46 in the electron transport materials III-C1 to III-C216 of the present invention is adjusted by multi-source co-evaporation on the hole blocking layer. 0.1nm / s, and the III-ET-57 evaporation rate is set at a ratio of 100%, the total film thickness of the vapor deposition is 23nm;
  • LiF having a thickness of 1 nm was vacuum-deposited on the electron transport layer (ETL) as an electron injection layer, and an Al layer having a thickness of 80 nm was used as a cathode of the device.
  • ETL electron transport layer
  • Examples III-1 to III-9 and Comparative Example III-1 were measured using Photo Research's PR 750 Optical Radiometer ST-86LA Luminance Meter (Beijing Normal University Optoelectronic Instrument Factory) and Keithley 4200 Test System.
  • the driving voltage and current efficiency of the organic electroluminescent device prepared in ⁇ III-3 Specifically, the voltage is raised at a rate of 0.1 V per second, and the voltage, that is, the driving voltage when the luminance of the organic electroluminescent device reaches 1000 cd/m 2 is measured, and the current density at this time is measured; the ratio of the luminance to the current density is For current efficiency;
  • an organic electroluminescent device was prepared in accordance with the above-described preparation process of the organic electroluminescent device, and device performance test was carried out in accordance with the above-described organic electroluminescent device test method.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C20.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C22.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C37.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C55.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C72.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C120.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C139.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-C189.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-ET-9.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-ET-46.
  • An organic electroluminescent device was obtained in the same manner as in Example III-1 except that the compound III-C1 was replaced with III-ET-80.
  • the compound of the present invention has a slightly lower voltage and a slightly higher efficiency than the electron transporting material III-ET-80 of Comparative Example III-3, possibly because the quinazoline triazole has a larger conjugate than the triazine. Structure and greater electron deficient, resulting in relatively better electron injection and migration capabilities.
  • novel organic material of the present invention is an organic light-emitting material with good performance as an electron-transporting material of an organic electroluminescent device, and is expected to be popularized for commercial application.
  • the compounds IV-ET-46 and IV-ET-58 shown below were used as comparative materials.
  • the glass plate coated with the ITO transparent conductive layer is ultrasonicated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in an acetone:ethanol mixed solvent, baked in a clean environment to completely remove moisture, and used ultraviolet light. Cleaning with ozone and bombarding the surface with a low energy cation beam;
  • the above-mentioned glass substrate with an anode is placed in a vacuum chamber, vacuumed to a pressure of less than 10 -5 Pa, and the hole transporting material IV-HT-28 is steamed by multi-source co-evaporation on the above anode film.
  • the plating rate is 0.1 nm/s
  • the hole injection material IV-HI-2 vapor deposition rate is 7%
  • the total vapor deposition thickness is 10 nm;
  • IV-HT-28 was vacuum-deposited on the hole injection layer as the first hole transport layer of the device, the evaporation rate was 0.1 nm/s, and the total vapor deposition thickness was 40 nm;
  • IV-HT-32 was vacuum evaporated on the first hole transport layer as the second hole transport layer of the device, the evaporation rate was 0.1 nm / s, and the total vapor deposition thickness was 10 nm;
  • a light-emitting layer of the device over the second hole transport layer, the light-emitting layer comprising a host material and a dye material, and adjusting the evaporation rate of the host material IV-BFH-4 to 0.1 nm/s by means of multi-source co-evaporation , the dye IV-BFD-4 evaporation rate is set at a ratio of 5%, and the total vapor deposition thickness is 20 nm;
  • Vapor-deposited IV-ET-17 as a hole blocking layer of the device on the first light-emitting layer the evaporation rate is 0.1 nm / s, the total thickness of the deposited film is 5 nm;
  • the electron transporting materials IV-C1 to IV-C43 or the comparative materials IV-ET46 and IV-ET58 of the present invention are adjusted to have a vapor deposition rate of 0.1 nm/s, and IV-, by means of multi-source co-evaporation on the hole blocking layer.
  • ET-57 evaporation rate 100% ratio setting, total vapor deposition thickness is 23nm;
  • LiF having a thickness of 1 nm was vacuum-deposited on the electron transport layer (ETL) as an electron injection layer, and an Al layer having a thickness of 80 nm was used as a cathode of the device.
  • ETL electron transport layer
  • Examples IV-1 to IV-7 and Comparative Example IV-1 were measured using Photo Research's PR 750 Optical Radiometer ST-86LA Type Luminance Meter (Beijing Normal University Optoelectronic Instrument Factory) and Keithley 4200 Test System.
  • the driving voltage and current efficiency of the organic electroluminescent device prepared in ⁇ IV-2 Specifically, the voltage is raised at a rate of 0.1 V per second, and the voltage at which the luminance of the organic electroluminescent device reaches 1000 cd/m 2 , that is, the driving voltage, is measured, and the current density at this time is measured; the ratio of luminance to current density That is, current efficiency;
  • an organic electroluminescent device was prepared in accordance with the above-described preparation process of the organic electroluminescent device, and device performance test was carried out in accordance with the above-described organic electroluminescent device test method.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that the compound IV-C7 was replaced with IV-C15.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that the compound IV-C7 was replaced with IV-C28.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that the compound IV-C7 was replaced with IV-C30.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that the compound IV-C7 was replaced with IV-C40.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that IV-ET-17 was not evaporated over the light-emitting layer as a hole blocking layer of the device.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that the compound IV-C7 was replaced with IV-C32.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that the compound IV-C7 was replaced with IV-ET-46.
  • An organic electroluminescent device was obtained in the same manner as in Example IV-1 except that the compound IV-C7 was replaced with IV-ET-58.
  • Example IV-1 The invention material IV-C7 1000.00 3.91 9.26
  • Example IV-2 The invention material IV-C15 1000.00 3.89 9.37
  • Example IV-3 The invention material IV-C28 1000.00 4.03 9.15
  • Example IV-4 The invention material IV-C30 1000.00 4.14 9.11
  • Example IV-5 The invention material IV-C40 1000.00 4.35 8.12
  • Example IV-6 The invention material IV-C7 1000.00 3.88 9.29
  • Example IV-7 The invention material IV-C32 1000.00 4.17 8.96 Comparative Example IV-1 Comparative Material IV-ET-46 1000.00 4.49 7.30 Comparative Example IV-2 Comparative Material IV-ET-58 1000.00 4.43 7.47
  • the organic electroluminescent device of -1 to IV-4 has a low voltage and a high current efficiency. It is presumed that this is because the electron transporting material used in Comparative Example IV-1 does not have the parent core structure of quinazoline and triazole, and the Ar IV of the electron transporting material used in Comparative Example IV-2 does not contain nitrogen. .
  • the compound IV-C40 of the present invention was used as an electron transporting material in Example IV-5, and the electroluminescent device had a lower voltage and higher current efficiency than Comparative Examples IV-1 and IV-2, but with Example IV. Compared with -1 to IV-4, its performance is poor. It is presumed that this is because Ar IV of the electron transporting material used in Example IV-5 is a quinazolinyl group (containing 2 nitrogens), instead of the phenyl-substituted triazine in Examples IV-1 to IV-4.
  • the base (containing 3 nitrogens) indicates that the introduction of the quinazolinyl-substituted triazinyl group into the electron transporting material is disadvantageous for the injection and transport of electrons.
  • Example IV-6 shows that IV-ET-17 is not used as the hole blocking material, and the device voltage is slightly lower than that in the case of using IV-ET-17 as the hole blocking material in Example IV-1, and the current efficiency is slightly lower. high. This indicates that the compound of the present invention can achieve satisfactory performance without using the HBL material.
  • Example IV-7 Although the organic electroluminescent device of Example IV-7 has a lower voltage and higher current efficiency than Comparative Examples IV-1 and IV-2, compared with Examples IV-1 to IV-4, The performance is slightly worse. It is presumed that this is because Ar IV of the electron transporting material used in Example IV-7 is a phenyl-substituted pyridyl group (containing 1 nitrogen) instead of the phenyl group in Examples IV-1 to IV-4. Triazine based (containing 3 nitrogens) indicates that the introduction of a phenylpyridyl substituted triazinyl group into an electron transporting material is detrimental to the injection and transport of electrons.
  • an organic electroluminescent device using a compound having a parent core structure of quinazoline and triazole and having at least one N of Ar IV as defined in the present invention is used as compared with an organic electroluminescent device using a compound having no such feature.
  • the compound containing a triazine structure in Ar IV is most effective, and the organic electroluminescent device using such a compound has the best performance.
  • novel organic material of the present invention is an organic light-emitting material with good performance as an electron-transporting material of an organic electroluminescent device, and is expected to be popularized for commercial application.

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Abstract

提供了一种新的有机电致发光材料及使用其的有机电致发光器件，所述的有机电致发光材料由通式(A)表示，式中，L a、L b、R a、R b、R c、n和m的含义如说明书所示。

Description

有机电致发光材料及器件 技术领域
本发明涉及一种新的有机杂环化合物，尤其涉及一类含有喹唑啉并三氮唑这种缺电子基团结构的化合物，及其在有机电致发光器件中的应用。
背景技术
有机电致发光(OLED:Organic Light Emission Diodes)器件是一类具有类三明治结构的器件，包括正负电极膜层及夹在电极膜层之间的有机功能材料层。对OLED器件的电极施加电压，正电荷从正极注入，负电荷从负极注入，在电场作用下正负电荷在有机层中迁移相遇复合发光。由于OLED器件具有亮度高、响应快、视角宽、工艺简单、可柔性化等优点,在新型显示技术领域和新型照明技术领域备受关注。目前，该技术已被广泛应用于新型照明灯具、智能手机及平板电脑等产品的显示面板，进一步还将向电视等大尺寸显示产品应用领域扩展，是一种发展快、技术要求高的新型显示技术。
目前随着OLED技术在显示和照明两大领域的不断推进，人们对于其核心材料的研究更加关注。这是因为一个效率好、寿命长的OLED器件通常是器件结构以及各种有机材料的优化搭配的结果，这就为化学家们设计开发各种结构的功能化材料提供了极大的机遇和挑战。作为核心材料，常见的功能化有机材料有：空穴注入材料、空穴传输材料、空穴阻挡材料、电子注入材料、电子传输材料，电子阻挡材料以及发光主体材料和发光客体(染料)等。
为了制备驱动电压更低、发光效率更好、器件使用寿命更长的OLED发光器件，实现OLED器件的性能不断提升，不仅需要对OLED器件结构和制作工艺进行创新，更需要对OLED器件中的光电功能材料不断研究和创新，以制备出具有更高性能的功能材料。基于此，OLED材料界一直致力于开发新的有机电致发光材料以实现器件低启动电压、高发光效率和更优的使用寿命。
在以往的文章和专利中已报道了传输能力强、稳定性高的各类型电子传输材料。一般来说，电子传输材料都是具有缺电子的含氮杂环基团的化合物，它们大多具有较高的电子亲和势，因而有较强的接受电子的能力，但是相对于空穴传输材料，常见的 电子传输材料例如AlQ3(八羟基喹啉铝)的电子迁移率要远低于空穴传输材料的空穴迁移率，因而在OLED器件中一方面会导致因载流子的注入和传输不均衡引起的空穴与电子的复合概率降低，从而降低器件的发光效率，另一方面具有较低电子迁移率的电子传输材料会导致器件的工作电压升高，从而影响功率效率，对能源的节约不利。
在目前OLED屏体厂商中，广泛地使用Liq(八羟基喹啉锂)掺杂到ET材料层中的技术手段，来实现器件的低电压和高效率，并且有提高器件寿命的作用。Liq的作用主要在于能够在阴极注入的电子作用下还原出微量的金属锂，从而起到对电子传输材料进行n-掺杂的效果，从而使得电子的注入效果显著提升，另一方面，锂离子会通过与电子传输材料中N原子的配位作用，起到提高ET材料电子迁移率的作用，从而使得Liq掺杂ET的器件具有低的工作电压和高的发光效率。
然而，业界常用的ET搭配LiQ的技术方案仍存在不足之处。一方面，LiQ对水和环境敏感导致工艺复杂性提高，不利于设备的设计制造成本的降低；另一方面，材料的使用种类较多，不利于材料成本的降低。
为了进一步满足对OLED器件的光电性能不断提升的需求，以及移动化电子器件对于节能的需求，需要不断地开发新型的、高效的OLED材料，其中开发新的具有高电子注入能力和高迁移率的电子传输材料具有很重要的意义。
基于此，本发明的目的在于，提供一类用于有机电致发光器件的新的化合物，以满足对OLED器件的光电性能不断提升的需求。
发明内容
为解决上述技术问题，本发明提供了一种新型化合物，同时提供该类化合物在OLED器件上的应用方法。该化合物含有喹唑啉并三氮唑结构，本发明的发明人发现将其作为电子传输材料引入有机电致发光器件中，可实现良好的电子注入和传输性能。
具体而言，作为本发明的一个方面，提供一种式(A)所示的化合物，
Figure PCTCN2019084389-appb-000001
其中，
L a为取代或未取代的C 6～C 30亚芳基，且
R a为下述基团，
Figure PCTCN2019084389-appb-000002
其中，X a 1～X a 5彼此相同或不同，且X a 1～X a 5各自独立地表示氮原子或CR d，R d表示选自H、取代或未取代的C 1～C 12烷基、C1～C12烷氧基、卤素、氰基、硝基、羟基、硅烷基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基中的基团；R d的数量为2个以上时，多个R d彼此相同或不同，多个R d之间可以稠合，或者相邻的R d与相连接的苯环或杂芳基稠合形成取代或未取代的C 6～C 30芳基或杂芳基，*表示与L a的连接位点；
或
L a为单键，且
R a为H、取代或未取代的C6～C30芳基或者取代或未取代的C3～C30杂芳基，所述取代基选自C1～C10烷基、C6～C14芳基或者C3～C14杂芳基；
L b为单键、取代或未取代的C6～C30亚芳基或者取代或未取代的C3～C30亚杂芳基；
R b选自以下的基团：H、氰基、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基，或下式所示的结构：
Figure PCTCN2019084389-appb-000003
X b 1～X b 6为C、CR e或者N，且至少一个X为N，R e为H、C6～C30芳基或者含1～3个杂原子的C3～C30杂芳基，若存在多个R e时，多个R e彼此相同或不同；
R c选自以下的基团：H、氰基、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、 取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基，
R b和R c任选各自独立地与相连接的苯环稠合形成C9～C30芳基或杂芳基，所形成的芳基或杂芳基任选地被0、1、2、3、4或5个各自独立地选自取代或未取代的C1～C12烷基、卤素、氰基、硝基、羟基、硅烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的取代基所取代；
n为1～5的整数，当n≥2时，多个R a彼此相同或不同，
m为0～4的整数，当m≥2时，多个R c彼此相同或不同，
当上述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C1-C12的烷基或环烷基、C2-C10烯基、C1-C6的烷氧基或硫代烷氧基基团、C6-C30芳基氨基、C3-C30杂芳基氨基、C6-C30芳基、C3-C30杂芳基中的一种。
本发明的式(A)化合物可以为由如下通式(I)表示的化合物，
Figure PCTCN2019084389-appb-000004
其中，
L I为取代或未取代的C 6～C 18亚芳基，
R I 1为下述基团，
Figure PCTCN2019084389-appb-000005
其中，X I 1～X I 5彼此相同或不同，且X I 1和X I 5各自独立地表示氮原子或CH，X I 2～X I 4各自独立地表示氮原子或CR I 4，R I 4表示选自H、取代或未取代的C 1～C 12烷基、取代或未取代的C 6～C 30芳基、取代或未取代的C 3～C 30杂芳基中基团；R I 4的数量为2个以上时，多个R I 4彼此相同或不同，或者相邻的R I 4与相连接的苯环稠合形成C 6～C 30芳基或杂芳基，*表示与L I的连接位点，
R I 2选自以下的基团：H、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、取代或未取代的C 6～C 30芳基、取代或未取代的C 3～C 30杂芳基，
R I 3选自以下的基团：C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、C 6～C 30芳基氨基、C 3～C 30杂芳基氨基、C 6～C 30芳基、C 3～C 30杂芳基，
n1为1～5的整数，
m1为0～4的整数，
上述的芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C 1～C 12烷基、C 6～C 30芳基、C 3～C 30杂芳基中的取代基所取代。
本发明的式(A)化合物可以为由通式(II)所示的化合物，
Figure PCTCN2019084389-appb-000006
其中，
L II为取代或未取代的C6～C18亚芳基，
R II 1为下述基团，
Figure PCTCN2019084389-appb-000007
其中，X II 1～X II 5彼此相同或不同，且X II 1和X II 5各自独立地表示氮原子或CH，X II 2～X II 4各自独立地表示氮原子或CR II 4，R II 4表示选自H、氰基、取代或未取代的C1～C12烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中基团；R II 4的数量为2个以上时，多个R II 4彼此相同或不同，或者相邻的R II 4与相连接的苯环稠合形成C9～C30芳基或杂芳基，*表示与L II的连接位点，
其中，至少一个R II 1中的X II 1～X II 5中至少一个为N；
R II 2选自以下的基团：H、氰基、取代或未取代的C1～C12烷基、C1～C12烷氧基、羟基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基，
R II 3选自以下的基团：C1～C12烷基、C1～C12烷氧基、羟基、氨基、C6～C30芳基氨基、C3～C30杂芳基氨基、C6～C30芳基、C3～C30杂芳基，
R II 2和R II 3任选各自独立地与相连接的苯环稠合形成C9～C30芳基或杂芳基，所 形成的芳基或杂芳基任选地被0、1、2、3、4或5个各自独立地选自取代或未取代的C1～C12烷基、卤素、氰基、硝基、羟基、硅烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的取代基所取代；
n2为1～5的整数，
m2为0～4的整数，
上述的芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C1～C12烷基、C6～C30芳基、C3～C30杂芳基中的取代基所取代。
本发明的式(A)化合物可以为由下式(III)所示的通式化合物：
Figure PCTCN2019084389-appb-000008
式(III)中，A III如下式(III-a)所示：
Figure PCTCN2019084389-appb-000009
上述式(III)和式(III-a)中：
Ar III选自取代或未取代的下述基团：C6-C60的芳基或者C3-C50的杂芳基；
R III 1-R III 4各自独立的选自下述基团中的一种：H、氰基、取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基；
L III选自取代或未取代的C6-C30的亚芳基；
X III 1-X III 5各自独立的选自C、CH或N，且至少一个为N；
n3为0-4的整数，R III 7选自下述基团中的一种：取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基，当R III 7为多个时彼此 可以相同或不同，且多个R III 7之间可以稠合连接；
当上述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C1-C10的烷基或环烷基、C2-C10烯基、C1-C6的烷氧基或硫代烷氧基基团、C6-C30芳基氨基、C3-C30杂芳基氨基、C6-C30的单环芳烃或稠环芳烃基团、C3-C30的单环杂芳烃或稠环杂芳烃基团中的一种。
本发明的式(A)化合物可以为由式(IV)所示的通式化合物：
Figure PCTCN2019084389-appb-000010
其中，L IV为单键、C6～C30的亚芳基或者C3～C30的亚杂芳基；m4为1～4的整数；R IV 1和R IV 2各自独立地为H、取代或未取代的C6～C30的芳基或者取代或未取代的C3～C30的杂芳基，所述取代基选自C1～C10的烷基、C6～C14的亚芳基或者C3～C14的亚杂芳基；Ar IV为以下结构：
Figure PCTCN2019084389-appb-000011
X IV 1～X IV 6为C、CR IV 3或者N，且至少一个X IV为N，R IV 3为H、C6～C30的芳基或者含1～3个杂原子的C3～C30的杂芳基，若存在多个R IV 3时，多个R IV 3彼此相同或不同。
作为本发明的另一个方面，还提供了一种如上所述的化合物在有机电致发光器件中的应用。其中，所述化合物可以用作但不限于电子传输层材料。
作为本发明的又一个方面，还提供了一种有机电致发光器件，包括第一电极、第二电极和插入在所述第一电极和第二电极之间的有机层，其特征在于，所述有机层中含有如上所述的化合物。
进一步地，作为第一电极和第二电极之间的有机层，通常包含电子注入层、电子传输层、发光层、空穴传输层、空穴注入层等有机层，其中，含有本发明的化合物的有机层可以用作但不限于电子传输层。
根据本发明，这类含有喹唑啉并三氮唑这种缺电子基团结构的化合物具有较大的 共轭结构、即喹唑啉并三氮唑结构，从而将其作为电子传输材料，可实现良好的电子注入和传输性能，进而可得到一种驱动电压低、发光效率高的有机电致发光器件。
本发明的化合物还可以应用于有机电子器件中，所述有机电子器件可举出例如有机电致发光器件、照明元件、有机薄膜晶体管、有机场效应晶体管、有机薄膜太阳能电池、信息标签、电子人工皮肤片材、片材型扫描器等大面积传感器、电子纸及有机EL面板等。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚明白，以下对本发明作进一步的详细说明。
在本说明书中，除非另有说明，否则下述术语具有如下含义：
需要说明的是，本发明中，Ca～Cb的表达方式代表该基团具有的碳原子数为a～b，除非特殊说明，一般而言该碳原子数不包括取代基的碳原子数，即在“取代或未取代的Ca～Cb的某基团”之类的表述中，若存在取代基，则碳原子数不包括取代基的碳原子数。若未注明“取代或未取代”则上述碳原子数为基团整体的碳原子数。本发明中，对于化学元素的表述包含化学性质相同的同位素的概念，例如“氢”的表述，也包括化学性质相同的“氘”、“氚”的概念。需要说明的是，在本发明中，也可以用“D”表示“氘”。
在本说明书中，表述“取代或未取代的”表示被一个或多个选自以下的取代基取代：卤素、氰基、羟基、烷氧基、烷基、芳基、杂芳基，优选为氟、氰基、甲氧基、甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、苯基、联苯基、萘基、菲基、芴基、二苯并呋喃基、二苯并噻吩基、吡啶基、喹啉基、苯基吡啶基、吡啶基苯基等；或者没有取代基。
在本说明书中，烷基可以为直链或支链的，且碳原子数没有特别限制，但优选为1-10个。烷基的具体实例包括甲基、乙基、正丙基、异丙基、正丁基、异丁基、仲丁基、叔丁基、戊基、己基、辛基、癸基等。
在本说明书中，芳基没有特别限制，但优选具有6-60个碳原子，例如6-30个碳原子。芳基的具体实例包括苯基、联苯基、萘基、蒽基、菲基、芴基等。在一些实施方案中，C6～C30的芳基优选苯基、萘基、更优选苯基。
在本说明书中，杂芳基为包含O、N、S、Si中的一个以上作为杂原子的杂芳基，碳原子数目优选为3-50个，例如3-30个。杂芳基的具体实例包括噻吩基、呋喃基、 吡咯基、咪唑基、噻唑基、噁唑基等。作为C3～C30的杂芳基的例子可举出：含氮杂芳基、含氧杂芳基、含硫杂芳基等，具体的例如可举出：吡啶基、嘧啶基、吡嗪基、哒嗪基、三嗪基、喹啉基、异喹啉基、萘啶基、酞嗪基、喹喔啉基、喹唑啉基、菲啶基、吖啶基、菲咯啉基、吡咯基、咪唑基、吡唑基、三唑基、四唑基、吲哚基、苯并咪唑基、吲唑基、咪唑并吡啶基、苯并三唑基、咔唑基、呋喃基、噻吩基、噁唑基、噻唑基、异噁唑基、异噻唑基、噁二唑基、噻二唑基、苯并呋喃基、苯并噻吩基、苯并噁唑基、苯并噻唑基、苯并异噁唑基、苯并异噻唑基、苯并噁二唑基、苯并噻二唑基、二苯并呋喃基、二苯并噻吩基、哌啶基、吡咯烷基、哌嗪基、吗啉基、吩嗪基、吩噻嗪基、吩噁嗪基等，其中优选吡啶基、二苯并呋喃基、二苯并噻吩基。
在本说明书中，结构式中的基团如R IV 2等的取代键指向环中心的表达方式，表示取代位置可以在该环上的任意可能位置。
以下，对本发明的一个方面的有机电致发光器件用材料进行说明。应当说明，虽然以下分别针对式(A)、式(I)、式(II)、式(III)和式(IV)进行描述，但其内容并非仅限于相关部分，而是在不矛盾的情况下，可以通过任何合适的方式进行组合。例如对于式(I)、式(II)、式(III)和式(IV)的化合物在有机OLED显示器件中应用的内容均可独立或组合地适用于式(A)、式(I)、式(II)、式(III)或式(IV)的化合物。
发明人发现了喹唑啉并三氮唑类化合物用作有机电致发光器件的有机层材料时，可以说器件效率相比现有技术显著提高。具体地，本发明的有机电致发光器件用材料是一种由如下通式(A)表示的化合物，
Figure PCTCN2019084389-appb-000012
其中，
L a为取代或未取代的C 6～C 30亚芳基，且
R a为下述基团，
Figure PCTCN2019084389-appb-000013
其中，X a 1～X a 5彼此相同或不同，且X a 1～X a 5各自独立地表示氮原子或CR d，R d表示选自H、取代或未取代的C 1～C 12烷基、C1～C12烷氧基、卤素、氰基、硝基、羟基、硅烷基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基中的基团；R d的数量为2个以上时，多个R d彼此相同或不同，多个R d之间可以稠合，或者相邻的R d与相连接的苯环或杂芳基稠合形成取代或未取代的C 6～C 30芳基或杂芳基，*表示与L a的连接位点；
或
L a为单键，且
R a为H、取代或未取代的C6～C30芳基或者取代或未取代的C3～C30杂芳基，所述取代基选自C1～C10烷基、C6～C14芳基或者C3～C14杂芳基；
L b为单键、取代或未取代的C6～C30亚芳基或者取代或未取代的C3～C30亚杂芳基；
R b选自以下的基团：H、氰基、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基，或下式所示的结构：
Figure PCTCN2019084389-appb-000014
X b 1～X b 6为C、CR e或者N，且至少一个X为N，R e为H、C6～C30芳基或者含1～3个杂原子的C3～C30杂芳基，若存在多个R e时，多个R e彼此相同或不同；
R c选自以下的基团：H、氰基、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基，
R b和R c任选各自独立地与相连接的苯环稠合形成C9～C30芳基或杂芳基，所形成的芳基或杂芳基任选地被0、1、2、3、4或5个各自独立地选自取代或未取代的C1～ C12烷基、卤素、氰基、硝基、羟基、硅烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的取代基所取代；
n为1～5的整数，当n≥2时，多个R a彼此相同或不同，
m为0～4的整数，当m≥2时，多个R c彼此相同或不同，
当上述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C1-C12的烷基或环烷基、C2-C10烯基、C1-C6的烷氧基或硫代烷氧基基团、C6-C30芳基氨基、C3-C30杂芳基氨基、C6-C30芳基、C3-C30杂芳基中的一种。
在一些实施方案中，X a 1～X a 5各自独立的选自C、CH或N，且至少一个为N。
在一些实施方案中，X a 1和X a 5各自独立地表示氮原子或CH，X a 2～X a 4各自独立地表示氮原子或CR d。
在一些实施方案中，芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C 1～C 12烷基、C 6～C 30芳基、C 3～C 30杂芳基中的取代基所取代。
在一些实施方案中，当所述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C1-C10的烷基或环烷基、C2-C10烯基、C1-C6的烷氧基或硫代烷氧基基团、C6-C30芳基氨基、C3-C30杂芳基氨基、C6-C30的单环芳烃或稠环芳烃基团、C3-C30的单环杂芳烃或稠环杂芳烃基团中的一种。
具体地，本发明的有机电致发光器件用材料是一种由如下通式(I)表示的化合物。
Figure PCTCN2019084389-appb-000015
上述具有喹唑啉并三氮唑母核的本发明化合物作为电子传输材料性能优异的具体原因尚不明确，推测可能是以下的原因：
首先，为了提高材料的电子注入和传输性能，本发明选择了具有较强电子亲和能力的基团，如吡啶基、嘧啶基、喹啉基、三嗪基等基团。
其次，本发明的化合物引入了新型的具有较大共轭结构的喹唑啉并三氮唑母核，同时引入了诸如嘧啶、三嗪及其衍生物类缺电子基团，从而使其具有高的电子亲和势，因而与阴极材料的功函数更加接近，使得材料能够很容易的从阴极得到电子，具有强 电子注入性。
同时，本发明的化合物具有非常好的共平面的共轭结构，使得化合物分子在固态下能够充分发生基团间的π-π相互作用，从而有利于电子在材料分子间的传递，使得这类材料具有非常高的电子迁移率。
在上述通式(I)中，L I为取代或未取代的C 6～C 18亚芳基。具体而言，L I优选为取代或未取代的亚苯基、亚萘基、亚菲基。
在上述通式(I)中，R I 1为下述基团。
Figure PCTCN2019084389-appb-000016
在上述结构式中，X I 1～X I 5彼此相同或不同，且X I 1和X I 5各自独立地表示氮原子或CH，X I 2～X I 4各自独立地表示氮原子或CR I 4。
在上述结构式中，R I 4表示选自H、取代或未取代的C 1～C 12烷基、取代或未取代的C 6～C 30芳基、取代或未取代的C 3～C 30杂芳基中基团。并且，R I 4的数量为2个以上时，多个R I 4彼此相同或不同；或者相邻的R I 4与相连接的苯环稠合形成C 6～C 30芳基或杂芳基。需要说明的是，在本发明中，“相邻的R I 4与相连接的苯环稠合”，既包括R I 4的数量为2个时，两个相邻的R I 4形成环状基团并与相连接的苯环稠合的情况；还包括R I 4的数量为3个时，两组两个相邻的R I 4形成环状基团彼此稠合、并与相连接的苯环稠合的情况。
在上述结构式中，*表示与L I的连接位点。
另外，上述形成的芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C 1～C 12烷基、C 6～C 30芳基、C 3～C 30杂芳基中的取代基所取代。
具体而言，R I 1优选选自三嗪基、嘧啶基、喹唑啉基、吡啶基、吡嗪基、异喹啉基、1,5-吡啶并吡啶基、喹啉基、噌啉基、喹噁啉基，这些基团任选被一个或多个选自以下的基团取代：乙基、叔丁基、苯基、萘基、联苯基、吡啶基、苯基吡啶基、吡啶基苯基。
由以上记载可以看出，R I 1优选为缺电子芳香杂环，更优选为哈米特值大于0.2的芳香杂环，从而作为本发明化合物的取代基的R I 1对化合物作为电子传输材料性能优异有很大贡献，推测这是因为：这些缺电子的芳香杂环有利于提高材料电子注入和迁移能力。
在上述通式(I)中，R I 2为选自以下的基团：H、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、取代或未取代的C 6～C 30芳基、取代或未取代的C 3～C 30杂芳基。
具体而言，R I 2优选自以下基团。
Figure PCTCN2019084389-appb-000017
*表示与母核的键合位置，“—”划过的环结构的表达方式，表示连接位点位于该环结构上任意能够成键的位置。
由以上记载可以看出，R I 2优选为芳香环，从而作为本发明化合物的取代基的R I 2对化合物作为电子传输材料性能优异有很大贡献，推测这是因为：R I 2对提高分子间π-π共轭作用，提高载流子迁移率有利。
在上述通式(I)中，R I 3选自以下的基团：C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、C 6～C 30芳基氨基、C 3～C 30杂芳基氨基、C 6～C 30芳基、C 3～C 30杂芳基。
在上述通式(I)中，n为1～5的整数，优选为1或2。
在上述通式(I)中，m为0～4的整数，优选为0或1。
更具体地，优选上述通式(I)所示的化合物为下述通式(I-1)～(I-3)所示化合物中的任一者。
Figure PCTCN2019084389-appb-000018
在式(I-1)～(I-3)中，R I 1和R I 2的含义与在上述通式(I)中的含义相同。
作为本发明涉及的化合物的优选结构，可以举出以下I-C1～I-C114所示结构的化合物，但不限于这些化合物。
Figure PCTCN2019084389-appb-000019
Figure PCTCN2019084389-appb-000020
Figure PCTCN2019084389-appb-000021
Figure PCTCN2019084389-appb-000022
Figure PCTCN2019084389-appb-000023
此外，本发明的化合物可以应用于有机电子器件中，所述有机电子器件可举出例如有机电致发光器件、照明元件、有机薄膜晶体管、有机场效应晶体管、有机薄膜太阳能电池、信息标签、电子人工皮肤片材、片材型扫描器等大面积传感器、电子纸及有机EL面板等。
另外，本发明还提供了上述含有新型缺电子基团的喹唑啉并三氮唑类化合物在有 机电致发光器件中的用途。其中，所述化合物可以用作但不限于电子传输层材料。
具体而言，本发明的一个实施方案提供了一种有机电致发光器件，包括第一电极、第二电极和插入在所述第一电极和第二电极之间的一层或多层有机层，其中，所述有机层包含上述喹唑啉并三氮唑衍生物。
进一步地，作为第一电极和第二电极之间的有机层，至少包含发光层，通常还包含电子注入层、电子传输层、空穴传输层、空穴注入层、空穴阻挡层等有机层，其中，含有本发明的化合物的有机层可以用作但不限于用在电子传输层。
接下来，对有机电致发光器件进行详细说明。
有机电致发光器件包括位于基板上的第一电极和第二电极，以及位于电极之间的有机层，所述有机层可以为多层结构。比如，该有机材料层可以包括空穴注入层、空穴传输层、发光层、电子传输层、电子注入层。
基板使用通常的有机发光显示器所用的基板，例如：玻璃、聚合物材料以及带有TFT元器件的玻璃和聚合物材料等。
阳极材料可以采用铟锡氧(ITO)、铟锌氧(IZO)、二氧化锡(SnO 2)、氧化锌(ZnO)等透明导电材料，也可以是银及其合金、铝及其合金等金属材料，也可以是PEDOT等有机导电材料，及上述材料的多层结构。
阴极材料可以选自但不限于镁银混合物、LiF/Al、ITO等金属、金属混合物、氧化物。
有机电致发光器件中还可以包括位于发光层与阳极之间的空穴传输层、空穴注入层，这些层可以为但不限于以下所罗列的I-HT-1至I-HT-34的一种或多种化合物的组合。
Figure PCTCN2019084389-appb-000024
Figure PCTCN2019084389-appb-000025
Figure PCTCN2019084389-appb-000026
器件发光层可以包含主体材料和发光染料，其中，主体可以为但不限于以下所列出的I-BFH-1至I-BFH-14的一种或多种化合物的组合。
Figure PCTCN2019084389-appb-000027
发光染料可以为但不限于以下所列出的I-BFD-1至I-BFD-9的一种或多种化合物的组合。
Figure PCTCN2019084389-appb-000028
该有机材料层可以包括电子传输层，以及位于发光层与电子传输层之间的空穴阻挡层。空穴阻挡层和电子传输层材料可以为但不限于以下所列出的I-ET-1至I-ET-58的一种或多种化合物的组合。
Figure PCTCN2019084389-appb-000029
Figure PCTCN2019084389-appb-000030
Figure PCTCN2019084389-appb-000031
Figure PCTCN2019084389-appb-000032
有机电致发光器件中还可以包括位于电子传输层与阴极之间的电子注入层，电子注入层材料包括但不限于以下列出的一种或多种的组合。
LiQ,LiF,NaCl,CsF,Li 2O,Cs 2CO 3,BaO,Na,Li,Ca。
具体而言，本发明的化合物可以为由如下通式(II)表示的化合物，
Figure PCTCN2019084389-appb-000033
其中，
L II为取代或未取代的C6～C18亚芳基，
R II 1为下述基团，
Figure PCTCN2019084389-appb-000034
其中，X II 1～X II 5彼此相同或不同，且X II 1和X II 5各自独立地表示氮原子或CH，X II 2～X II 4各自独立地表示氮原子或CR II 4，R II 4表示选自H、氰基、取代或未取代的C1～C12烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中基团；R II 4的数量为2个以上时，多个R II 4彼此相同或不同，或者相邻的R II 4与相连接的苯环稠合形成C6～C30芳基或杂芳基，*表示与L II的连接位点，
其中，至少一个R II 1中的X II 1～X II 5中至少有一个为N；
R II 2选自以下的基团：H、氰基、取代或未取代的C1～C12烷基、C1～C12烷氧基、羟基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基，
R II 3选自以下的基团：C1～C12烷基、C1～C12烷氧基、羟基、氨基、C6～C30芳基氨基、C3～C30杂芳基氨基、C6～C30芳基、C3～C30杂芳基，
R II 2和R II 3任选各自独立地与相连接的苯环稠合形成C9～C30芳基或杂芳基，所形成的芳基或杂芳基任选地被0、1、2、3、4或5个各自独立地选自取代或未取代的C1～C12烷基、卤素、氰基、硝基、羟基、硅烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的取代基所取代；
n2为1～5的整数，
m2为0～4的整数，
上述的芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C1～C12烷基、 C6～C30芳基、C3～C30杂芳基中的取代基所取代。
发明人发现，喹唑啉并三氮唑类化合物用作有机电致发光器件的有机层材料时，说器件效率相比现有技术显著提高。本发明上述化合物作为电子传输材料性能优异的具体原因尚不明确，推测可能是以下的原因：首先，为了提高材料的电子注入和传输性能，本发明选择了具有较强电子亲和能力的基团，如吡啶基、嘧啶基、喹啉基、三嗪基等基团。其次，本发明的化合物引入了新型的具有较大共轭结构的喹唑啉并三氮唑母核，同时引入了诸如嘧啶、三嗪及其衍生物类缺电子基团，从而使其具有高的电子亲和势，因而与阴极材料的功函数更加接近，使得材料能够很容易的从阴极得到电子，具有强电子注入性。同时，本发明的化合物具有非常好的共平面的共轭结构，使得化合物分子在固态下能够充分发生基团间的π-π相互作用，从而有利于电子在材料分子间的传递，使得这类材料具有非常高的电子迁移率。因此，使用了本发明上述化合物的有机电致发光器件与现有技术相比，具有更高的电流效率和较低的驱动电压。
上述化合物中，R II 1优选选自三嗪基、嘧啶基、喹唑啉基、吡啶基、吡嗪基、异喹啉基、1,5-吡啶并吡啶基、喹啉基、噌啉基、喹噁啉基，这些基团任选被一个或多个选自以下的基团取代：乙基、叔丁基、苯基、萘基、联苯基、吡啶基、苯基吡啶基、吡啶基苯基，优选为苯基、萘基、联苯基、吡啶基、苯基吡啶基、吡啶基苯基。
由以上记载可以看出，R II 1优选为缺电子芳香杂环，更优选为哈米特值大于0.2的芳香杂环，从而作为本发明化合物的取代基的R II 1对化合物作为电子传输材料性能优异有很大贡献，推测这是因为：这些缺电子的芳香杂环有利于提高材料电子注入和迁移能力。所述哈米特值是指对特定基团电荷亲和力的表征，是吸电子基团(正哈米特值)或给电子基团(负哈米特值)的度量。在Thomas H.Lowry和Katheleen Schueller Richardson,“Mechanism and Theory In Organic Chemistry’,New York,1987,143-151页中更详细描述了哈米特方程，此处引作参考。
上述化合物中，优选至少有1个R II 1为取代或未取代的三嗪基、吡嗪基、异喹啉基、1,5-吡啶并吡啶基或喹噁啉基，更优选至少1个R II 1为取代或未取代的三嗪基或吡嗪基，进一步优选至少1个R II 1为取代或未取代的三嗪基。所述三嗪基、吡嗪基、异喹啉基、1,5-吡啶并吡啶基或喹噁啉基任选被一个或多个选自以下的基团取代：苯基、萘基、联苯基、吡啶基、苯基吡啶基、吡啶基苯基、菲基。
通过包含如上所述的R II 1，本发明的上述化合物的电子注入性进一步提高，因此使用了本发明的上述化合物的有机电致发光器件的电流效率进一步提高。
上述化合物中，R II 2优选选自H、氰基、取代或未取代的C1～C12烷基、C1～C12烷氧基、羟基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的联苯基、取代或未取代的C15～C30芳基、取代或未取代的C12～C30杂芳基中的一种。
上述化合物中R II 2更优选选自H、取代或未取代的C1～C12烷基、取代或未取代的联苯基、取代或未取代的C15～C30芳基、取代或未取代的C12～C30杂芳基中的一种，进一步优选选自取代或未取代的以下基团：
Figure PCTCN2019084389-appb-000035
其中，*表示与母核的键合位置，“—”划过的环结构的表达方式，表示连接位点位于该环结构上任意能够成键的位置，
最优选选自取代或未取代的芴基、联苯基、或三联苯基。
通过包含如上所述的R II 2，有利于提高分子间π-π共轭作用，提高载流子迁移率，从而进一步降低将该化合物用作电子传输材料时器件的驱动电压。
上述化合物中，L II优选为取代或未取代的亚苯基、亚萘基、亚菲基中的一种，更优选为亚苯基。
上述化合物中，n2优选为1或2，更优选为1。
上述化合物中，通式(II)优选选自通式(II-1)、(II-2)或(II-3)：
Figure PCTCN2019084389-appb-000036
其中，a2为1或2,
R II 4选自氢、C1～C12烷基、C1～C12烷氧基、卤素、氰基、硝基、羟基、硅烷基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的一种；
R II 1～R II 3、m2与通式(II)中的定义相同。
上述化合物中，m2优选为0或1。
上述化合物中，R II 1的取代基优选为苯基，更优选上述化合物包含3,5-二苯基三嗪基。
通过包含上述结构单元，能够得到性质非常稳定的化合物，有利于延长使用了该化合物的有机电致发光器件的寿命。同时，发明人发现，使用了该化合物的有机电致发光器件还具有驱动电压略微降低的优点。
上述化合物优选选自下述II-C1～II-C34所示结构的化合物：
Figure PCTCN2019084389-appb-000037
Figure PCTCN2019084389-appb-000038
作为本发明的另一个方面，本发明还提供了一种上述化合物在有机电致发光器件中的应用。其中，所述化合物可以用作但不限于电子传输层材料。将本发明的化合物作为电子传输材料引入有机电致发光器件中，能够显著提升器件的性能。
此外，本发明的化合物还可以应用于有机电子器件中，所述有机电子器件可举出例如有机电致发光器件、照明元件、有机薄膜晶体管、有机场效应晶体管、有机薄膜太阳能电池、信息标签、电子人工皮肤片材、片材型扫描器等大面积传感器、电子纸及有机EL面板等。
作为本发明的又一个方面，还提供了一种有机电致发光器件，包括第一电极、第二电极和插入在所述第一电极和第二电极之间的有机层，其特征在于，所述有机层中含有上述化合物。
进一步地，作为第一电极和第二电极之间的有机层，通常包含电子注入层、电子传输层、发光层、空穴传输层、空穴注入层等有机层，其中，含有本发明的化合物的有机层可以用作但不限于电子传输层。
根据本发明，这类含有喹唑啉并三氮唑这种缺电子基团结构的化合物具有较大的 共轭结构、即喹唑啉并三氮唑结构，从而将其作为电子传输材料，可实现良好的电子注入和传输性能，进而可得到一种驱动电压低、发光效率高的有机电致发光器件。
有机OLED显示器件一般包括位于第一电极和第二电极，以及位于电极之间的有机材料层。该有机材料又可以分为多个区域。比如，该有机材料层可以包括空穴传输区、发光层、电子传输区。
除使用本发明化合物以外，本发明的有机电致发光器件的结构和制备与现有的器件并无特殊不同，一般包括下述要素和相关制备步骤，
在第一电极下方或者第二电极上方可以使用基板。基板均为具有机械强度、热稳定性、防水性、透明度优异的玻璃或聚合物材料。此外，作为显示器用的基板上也可以带有薄膜晶体管(TFT)。
第一电极可以通过在基板上溅射或者沉积用作第一电极的材料的方式来形成。当第一电极作为阳极时，可以采用铟锡氧(ITO)、铟锌氧(IZO)、二氧化锡(SnO 2)、氧化锌(ZnO)等氧化物透明导电材料和它们的任意组合。第一电极作为阴极时，可以采用镁(Mg)、银(Ag)、铝(Al)、铝-锂(Al-Li)、钙(Ca)、镁-铟(Mg-In)、镁-银(Mg-Ag)等金属或合金以及它们之间的任意组合。
有机材料层可以通过真空热蒸镀、旋转涂敷、打印等方法形成于电极之上。用作有机材料层的化合物可以为有机小分子、有机大分子和聚合物，以及它们的组合。
空穴传输区位于阳极和发光层之间。空穴传输区可以为单层结构的空穴传输层(HTL)，包括只含有一种化合物的单层空穴传输层和含有多种化合物的单层空穴传输层。空穴传输区也可以为包括空穴注入层(HIL)、空穴传输层(HTL)、电子阻挡层(EBL)中的至少一层的多层结构。
空穴传输区的材料可以选自、但不限于酞菁衍生物如CuPc、导电聚合物或含导电掺杂剂的聚合物如聚苯撑乙烯、聚苯胺/十二烷基苯磺酸(Pani/DBSA)、聚(3,4-乙撑二氧噻吩)/聚(4-苯乙烯磺酸盐)(PEDOT/PSS)、聚苯胺/樟脑磺酸(Pani/CSA)、聚苯胺/聚(4-苯乙烯磺酸盐)(Pani/PSS)、芳香胺衍生物如下面II-HT-1至II-HT-34所示的化合物；或者其任意组合。
Figure PCTCN2019084389-appb-000039
Figure PCTCN2019084389-appb-000040
空穴注入层位于阳极和空穴传输层之间。空穴注入层可以是单一化合物材料，也可以是多种化合物的组合。例如，空穴注入层可以采用上述II-HT-1至II-HT-34的一种或多种化合物，或者采用下述II-HI-1至II-HI-3中的一种或多种化合物；也可以采用II-HT-1至II-HT-34的一种或多种化合物掺杂下述II-HI-1至II-HI-3中的一种或多种化合物。
Figure PCTCN2019084389-appb-000041
发光层包括可以发射不同波长光谱的的发光染料(即掺杂剂，dopant)，还可以同时包括主体材料(Host)。发光层可以是发射红、绿、蓝等单一颜色的单色发光层。多种不同颜色的单色发光层可以按照像素图形进行平面排列，也可以堆叠在一起而形成彩色发光层。当不同颜色的发光层堆叠在一起时，它们可以彼此隔开，也可以彼此相连。发光层也可以是能同时发射红、绿、蓝等不同颜色的单一彩色发光层。
根据不同的技术，发光层材料可以采用荧光电致发光材料、磷光电致发光材料、热活化延迟荧光发光材料等不同的材料。在一个OLED器件中，可以采用单一的发光技术，也可以采用多种不同的发光技术的组合。这些按技术分类的不同发光材料可以发射同种颜色的光，也可以发射不同种颜色的光。
在本发明的一方面，发光层采用磷光电致发光的技术。其发光层主体材料选自、但不限于II-GPH-1至II-GPH-80中的一种或多种的组合。
Figure PCTCN2019084389-appb-000042
Figure PCTCN2019084389-appb-000043
Figure PCTCN2019084389-appb-000044
Figure PCTCN2019084389-appb-000045
在本发明的一方面，发光层采用磷光电致发光的技术。其发光层磷光掺杂剂可以选自、但不限于以下所罗列的II-GPD-1至II-GPD-47的一种或多种的组合。
Figure PCTCN2019084389-appb-000046
Figure PCTCN2019084389-appb-000047
在本发明的一方面，发光层采用磷光电致发光的技术。其发光层主体材料选自、 但不限于II-RH-1至II-RH-31中的一种或多种的组合。
Figure PCTCN2019084389-appb-000048
在本发明的一方面，发光层采用磷光电致发光的技术。其发光层磷光掺杂剂可以 选自、但不限于以下所罗列的II-RPD-1至II-RPD-28的一种或多种的组合。
Figure PCTCN2019084389-appb-000049
在本发明的一方面，发光层采用磷光电致发光的技术。其发光层磷光掺杂剂可以选自、但不限于以下所罗列的II-YPD-1至II-YPD-11的一种或多种的组合。
Figure PCTCN2019084389-appb-000050
在本发明的一方面，发光层采用荧光电致发光的技术。其发光层荧光主体材料可以选自、但不限于以下所罗列的II-BFH-1至II-BFH-17的一种或多种的组合。
Figure PCTCN2019084389-appb-000051
在本发明的一方面，发光层采用荧光电致发光的技术。其发光层荧光掺杂剂可以选自、但不限于以下所罗列的II-BFD-1至II-BFD-12的一种或多种的组合。
Figure PCTCN2019084389-appb-000052
OLED有机材料层还可以包括发光层与阴极之间的电子传输区。电子传输区可以为单层结构的电子传输层(ETL)，包括只含有一种化合物的单层电子传输层和含有多种化合物的单层电子传输层。电子传输区也可以为包括电子注入层(EIL)、电子传输层(ETL)、空穴阻挡层(HBL)中的至少一层的多层结构。
本发明的一方面，电子传输层材料可以选自、但不限于以下所罗列的II-ET-1至II-ET-58的一种或多种的组合。
Figure PCTCN2019084389-appb-000053
Figure PCTCN2019084389-appb-000054
Figure PCTCN2019084389-appb-000055
器件中还可以包括位于电子传输层与阴极之间的电子注入层，电子注入层材料包括但不限于以下罗列的一种或多种的组合。
LiQ,LiF,NaCl,CsF,Li 2O,Cs 2CO 3,BaO,Na,Li,Ca。
形成以上各层的方法是公知的，例如可以使用蒸镀法、溅射法、溶液涂布法等。
本发明的化合物可以如下式(III)所示：
Figure PCTCN2019084389-appb-000056
式(III)中的A III如下式(III-a)所示：
Figure PCTCN2019084389-appb-000057
上述式(III)和式(III-a)中：
Ar III选自取代或未取代的下述基团：C6-C60的芳基或者C3-C50的杂芳基；
R III 1-R III 4各自独立的选自下述基团中的一种：H、氰基、取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基；
X III 1-X III 5各自独立的选自C、CH或N，且至少一个为N；
n3为0-4的整数，R III 7选自下述基团中的一种：取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基，当R III 7为多个时彼此可以相同或不同，且多个R III 7之间可以稠合连接；
L III选自取代或未取代的C6-C30的亚芳基；
当上述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C 1-C 10的烷基或环烷基、C 2-C 10烯基、C 1-C 6的烷氧基或硫代烷氧基基团、C 6-C 30芳基氨基、C 3-C 30杂芳基氨基、C 6-C 30的单环芳烃或稠环芳烃基团、C 3-C 30的单环杂芳烃或稠环杂芳烃基团中的一种。
进一步优选的，通式(III)优选为如下式(III-2)所示：
Figure PCTCN2019084389-appb-000058
式(III-2)中，Ar III、R III 1-R III 4的定义均与在式(III)中的定义相同，A III如下式(III-a)所示：
Figure PCTCN2019084389-appb-000059
式(III-a)中，X III 1-X III 5各自独立地选自C、CH或N，且至少一个为N；优选的，X III 1-X III 5中的两个或三个为N；
n3为0-4的整数，优选的，n3为0-3的整数；R III 7选自下述基团中的一种：取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基，当R III 7为多个时彼此可以相同或不同，且多个R III 7之间可以稠合连接。
再进一步的，上述式(III)和式(III-2)中的基团A III优选为下述结构式(III-a-1)或(III-a-2)，其中，m3为0-3的整数，R III 7的定义与在上述式(III-a)中的定义相同：
Figure PCTCN2019084389-appb-000060
再进一步的，上述式(III)和式(III-2)中的基团A III优选为下述结构式(III-a-11)或(III-a-12)：
Figure PCTCN2019084389-appb-000061
R III 5、R III 6各自独立的选自下述基团中的一种：H、氰基、取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基。
更进一步的，上述式(III)优选为如下式(III-2-1)或式(III-2-2)所示：
Figure PCTCN2019084389-appb-000062
其中，A III、Ar III、R III 1-R III 4的定义均与在式(III)中的定义相同。
更进一步的，上述式(III)优选为如下式(III-3-1)至式(III-3-4)所示：
Figure PCTCN2019084389-appb-000063
其中，A III、Ar III、R III 1-R III 4的定义均与在式(III)中的定义相同。
更进一步的，上述式(III)优选为如下式(III-4-1)或式(III-4-2)所示，其中，m3为0-3的整数，A III、Ar III、R III 1-R III 4、R III 7的定义均与在式(III)中的定义相同。
Figure PCTCN2019084389-appb-000064
更进一步的，上述式(III)优选为如下式(III-5-1)或式(III-5-2)所示，其中，A III、Ar III、R III 1-R III 4、R III 7的定义均与在式(III)中的定义相同。
Figure PCTCN2019084389-appb-000065
进一步的，式(III)中所述的R III 1-R III 4各自独立地选自H，或者选自取代或未取代的下述基团：甲基、乙基、正丙基、异丙基、正丁基、异丁基、仲丁基、叔丁基、2-甲基丁基、正戊基、仲戊基、环戊基、新戊基、正己基、环己基、新己基、正庚基、环庚基、正辛基、环辛基、2-乙基己基、三氟甲基、五氟乙基、2,2,2-三氟乙基、苯基、萘基、蒽基、苯并蒽基、菲基、苯并菲基、芘基、窟基、茈基、荧蒽基、并四苯基、并五苯基、苯并芘基、联苯基、偶苯基、三联苯基、三聚苯基、四联苯基、芴基、螺二芴基、二氢菲基、二氢芘基、四氢芘基、顺式或反式茚并芴基、三聚茚基、异三聚茚基、螺三聚茚基、螺异三聚茚基、呋喃基、苯并呋喃基、异苯并呋喃基、二苯并呋喃基、噻吩基、苯并噻吩基、异苯并噻吩基、二苯并噻吩基、吡咯基、异吲哚基、咔唑基、、茚并咔唑基、吡啶基、喹啉基、异喹啉基、吖啶基、菲啶基、苯并-5,6-喹啉基、苯并-6,7-喹啉基、苯并-7,8-喹啉基、吩噻嗪基、吩嗪基、吡唑基、吲唑基、咪唑基、苯并咪唑基、萘并咪唑基、菲并咪唑基、吡啶并咪唑基、吡嗪并咪唑基、喹喔啉并咪唑基、嗯唑基、苯并嗯唑基、萘并嗯唑基、蒽并嗯唑基、菲并嗯唑基、1，2-噻唑基、1，3-噻唑基、苯并噻唑基、哒嗪基、苯并哒嗪基、嘧啶基、苯并嘧啶基、喹喔啉基、1，5-二氮杂蒽基、2,7-二氮杂芘基、2,3-二氮杂芘基、1,6-二氮杂芘基、1,8- 二氮杂芘基、4,5-二氮杂芘基、4,5,9,10-四氮杂茈基、吡嗪基、吩嗪基、吩嗪基、吩噻嗪基、萘啶基、氮杂咔唑基、苯并咔啉基、菲咯啉基、1,2,3-三唑基、1,2,4-三唑基、苯并三唑基、1,2,3-噁二唑基、1,2,4-嗯二唑基、1,2,5_嗯二唑基、1,2,3-噻二唑基、1,2,4-噻二唑基、1,2,5-噻二唑基、1,3,4-噻二唑基、1,3,5-三嗪基、1,2,4-三嗪基、1,2,3-三嗪基、四唑基、1,2,4,5-四嗪基、1,2,3,4-四嗪基、1,2,3,5-四嗪基、嘌呤基、蝶啶基、吲嗪基、苯并噻二唑基中的一种，或选自以上两种基团的组合。
进一步的，式(III)中所述的Ar III选自取代或未取代的下述基团：苯基、萘基、蒽基、苯并蒽基、菲基、苯并菲基、芘基、窟基、茈基、荧蒽基、并四苯基、并五苯基、苯并芘基、联苯基、偶苯基、三联苯基、三聚苯基、四联苯基、芴基、螺二芴基、二氢菲基、二氢芘基、四氢芘基、顺式或反式茚并芴基、三聚茚基、异三聚茚基、螺三聚茚基、螺异三聚茚基、呋喃基、苯并呋喃基、异苯并呋喃基、二苯并呋喃基、噻吩基、苯并噻吩基、异苯并噻吩基、二苯并噻吩基、吡咯基、异吲哚基、咔唑基、、茚并咔唑基、吡啶基、喹啉基、异喹啉基、吖啶基、菲啶基、苯并-5,6-喹啉基、苯并-6,7-喹啉基、苯并-7,8-喹啉基、吩噻嗪基、吩嗪基、吡唑基、吲唑基、咪唑基、苯并咪唑基、萘并咪唑基、菲并咪唑基、吡啶并咪唑基、吡嗪并咪唑基、喹喔啉并咪唑基、嗯唑基、苯并嗯唑基、萘并嗯唑基、蒽并嗯唑基、菲并嗯唑基、1，2-噻唑基、1，3-噻唑基、苯并噻唑基、哒嗪基、苯并哒嗪基、嘧啶基、苯并嘧啶基、喹喔啉基、1，5-二氮杂蒽基、2,7-二氮杂芘基、2,3-二氮杂芘基、1,6-二氮杂芘基、1,8-二氮杂芘基、4,5-二氮杂芘基、4,5,9,10-四氮杂茈基、吡嗪基、吩嗪基、吩嗪基、吩噻嗪基、萘啶基、氮杂咔唑基、苯并咔啉基、菲咯啉基、1,2,3-三唑基、1,2,4-三唑基、苯并三唑基、1,2,3-噁二唑基、1,2,4-嗯二唑基、1,2,5_嗯二唑基、1,2,3-噻二唑基、1,2,4-噻二唑基、1,2,5-噻二唑基、1,3,4-噻二唑基、1,3,5-三嗪基、1,2,4-三嗪基、1,2,3-三嗪基、四唑基、1,2,4,5-四嗪基、1,2,3,4-四嗪基、1,2,3,5-四嗪基、嘌呤基、蝶啶基、吲嗪基、苯并噻二唑基中的一种，或选自以上两种基团的组合。
更进一步的，本发明的通式(III)所述的化合物可以优选出下述具体结构化合物：III-C1至III-C218，这些化合物仅为代表性的：
Figure PCTCN2019084389-appb-000066
Figure PCTCN2019084389-appb-000067
Figure PCTCN2019084389-appb-000068
Figure PCTCN2019084389-appb-000069
Figure PCTCN2019084389-appb-000070
Figure PCTCN2019084389-appb-000071
Figure PCTCN2019084389-appb-000072
Figure PCTCN2019084389-appb-000073
Figure PCTCN2019084389-appb-000074
Figure PCTCN2019084389-appb-000075
Figure PCTCN2019084389-appb-000076
本发明的化合物具有较高的电子亲和势，因而有较强的接受电子的能力，适于作为电子传输材料来使用，且该应用领域并不限定于有机电致发光材料中，也可以应用于光学传感器、太阳能电池、照明元件、有机薄膜晶体管、有机场效应晶体管、有机薄膜太阳能电池、信息标签、电子人工皮肤片材、片材型扫描器等大面积传感器、电子纸等技术领域。
本发明还提供一种有机电致发光器件，包括基板，包括第一电极、第二电极和插入在所述第一电极和第二电极之间的一层或多层有机层，其中，所述有机层包含上述通式(III)、通式(III-2)、通式(III-2-1)-(III-2-2)、通式(III-3-1)-(III-3-4)、通式(III-4-1)-(III-4-2)和通式(III-5-1)-(III-5-2)中任一所示的化合物。
具体而言，本发明的一个实施方案提供了一种有机电致发光器件，包括基板，以及依次形成在所述基板上的阳极层、多个发光功能层和阴极层；所述的发光功能层包括空穴注入层、空穴传输层、发光层、电子传输层，所述的空穴注入层形成在所述的阳极层上，所述的空穴传输层形成在所述的空穴注入层上，所述的阴极层形成在所述的电子传输层上，所述的空穴传输层与所述的电子传输层之间为发光层；其中，所述的电子传输层中含有上述式(III)所示的本发明的通式化合物。
采用本发明化合物制备的OLED器件具有低启动电压、高发光效率和更优的使用寿命，能够满足当前面板制造企业对高性能材料的要求。
上述本发明化合物用作有机电致发光器件中的电子传输层材料性能优异的具体原因尚不明确，推测可能是以下的原因：
本发明的通式化合物采用新的喹唑啉并三氮唑作为母核结构，与现有技术常用的单个恶唑、噻唑、咪唑、三氮唑或三嗪等结构相比，本发明化合物的结构具有相对更强的缺电子性，因此有利于电子的注入。同时，本发明化合物中的大共轭并环结构增加了分子的平面共轭性，从而有利于提高电子的迁移率。由以上两方面的结构特性可以使分子整体表现出良好的电子注入和迁移性能。所以，当将本发明的化合物用作有机电致发光器件中的电子传输层材料时，可以有效提升器件中的电子注入和迁移效率，从而确保器件获得高发光效率、低启动电压的优异效果。
另外，本发明化合物的制备工艺简单易行，原料易得，适合于量产放大。
接下来，对有机电致发光器件进行详细说明。
OLED包括位于第一电极和第二电极，以及位于电极之间的有机材料层。该有机材料又可以分为多个区域。比如，该有机材料层可以包括空穴传输区、发光层、电子 传输区。
在具体实施例中，在第一电极下方或者第二电极上方可以使用基板。基板均为具有机械强度、热稳定性、防水性、透明度优异的玻璃或聚合物材料。此外，作为显示器用的基板上也可以带有薄膜晶体管(TFT)。
第一电极可以通过在基板上溅射或者沉积用作第一电极的材料的方式来形成。当第一电极作为阳极时，可以采用铟锡氧(ITO)、铟锌氧(IZO)、二氧化锡(SnO2)、氧化锌(ZnO)等氧化物透明导电材料和它们的任意组合。第一电极作为阴极时，可以采用镁(Mg)、银(Ag)、铝(Al)、铝-锂(Al-Li)、钙(Ca)、镁-铟(Mg-In)、镁-银(Mg-Ag)等金属或合金以及它们之间的任意组合。
有机材料层可以通过真空热蒸镀、旋转涂敷、打印等方法形成于电极之上。用作有机材料层的化合物可以为有机小分子、有机大分子和聚合物，以及它们的组合。
空穴传输区位于阳极和发光层之间。空穴传输区可以为单层结构的空穴传输层(HTL)，包括只含有一种化合物的单层空穴传输层和含有多种化合物的单层空穴传输层。空穴传输区也可以为包括空穴注入层(HIL)、空穴传输层(HTL)、电子阻挡层(EBL)中的至少一层的多层结构。
空穴传输区的材料可以选自、但不限于酞菁衍生物如CuPc、导电聚合物或含导电掺杂剂的聚合物如聚苯撑乙烯、聚苯胺/十二烷基苯磺酸(Pani/DBSA)、聚(3,4-乙撑二氧噻吩)/聚(4-苯乙烯磺酸盐)(PEDOT/PSS)、聚苯胺/樟脑磺酸(Pani/CSA)、聚苯胺/聚(4-苯乙烯磺酸盐)(Pani/PSS)、芳香胺衍生物如下面III-HT-1至III-HT-34所示的化合物；或者其任意组合。
Figure PCTCN2019084389-appb-000077
Figure PCTCN2019084389-appb-000078
Figure PCTCN2019084389-appb-000079
空穴注入层位于阳极和空穴传输层之间。空穴注入层可以是单一化合物材料，也可以是多种化合物的组合。例如，空穴注入层可以采用上述III-HT-1至III-HT-34的一种或多种化合物，或者采用下述III-HI-1至III-HI-3中的一种或多种化合物；也可以采用III-HT-1至III-HT-34的一种或多种化合物掺杂下述III-HI-1至III-HI-3中的一种或多种化合物。
Figure PCTCN2019084389-appb-000080
发光层包括可以发射不同波长光谱的的发光染料(即掺杂剂，dopant)，还可以同时包括主体材料(Host)。发光层可以是发射红、绿、蓝等单一颜色的单色发光层。多种不同颜色的单色发光层可以按照像素图形进行平面排列，也可以堆叠在一起而形成彩色发光层。当不同颜色的发光层堆叠在一起时，它们可以彼此隔开，也可以彼此相连。发光层也可以是能同时发射红、绿、蓝等不同颜色的单一彩色发光层。
根据不同的技术，发光层材料可以采用荧光电致发光材料、磷光电致发光材料、热活化延迟荧光发光材料等不同的材料。在一个OLED器件中，可以采用单一的发光技术，也可以采用多种不同的发光技术的组合。这些按技术分类的不同发光材料可以发射同种颜色的光，也可以发射不同种颜色的光。
在本发明的一方面，发光层采用荧光电致发光的技术。其发光层荧光主体材料可以选自、但不限于以下所罗列的III-BFH-1至III-BFH-17一种或多种的组合。
Figure PCTCN2019084389-appb-000081
Figure PCTCN2019084389-appb-000082
在本发明的一方面，发光层采用荧光电致发光的技术。其发光层荧光掺杂剂可以选自、但不限于以下所罗列的III-BFD-1至III-BFD-12的一种或多种的组合。
Figure PCTCN2019084389-appb-000083
本发明的有机EL发光器件包括发光层与阴极之间的电子传输区。电子传输区可以为单层结构的电子传输层(ETL)，包括只含有一种化合物的单层电子传输层和含有多种化合物的单层电子传输层。电子传输区也可以为包括电子注入层(EIL)、电子传输层(ETL)、空穴阻挡层(HBL)中的至少一层的多层结构。
电子传输区也可以为包括电子注入层(EIL)、电子传输层(ETL)、空穴阻挡层(HBL)中的至少一层的多层结构应用本发明的化合物来形成，当然电子传输区的材料还可以 与以下所罗列的III-ET-1至III-ET-57的一种或多种的组合。
Figure PCTCN2019084389-appb-000084
Figure PCTCN2019084389-appb-000085
Figure PCTCN2019084389-appb-000086
器件中还可以包括位于电子传输层与阴极之间的电子注入层，电子注入层材料包括但不限于以下罗列的一种或多种的组合。
LiQ,LiF,NaCl,CsF,Li 2O,Cs 2CO 3,BaO,Na,Li,Ca。
本发明的化合物可以为由如下通式(IV)表示的化合物，
Figure PCTCN2019084389-appb-000087
其中，L IV为单键、取代或未取代的C6～C30的亚芳基或者取代或未取代的C3～C30的亚杂芳基，所述取代基选自C1～C10的烷基、C6～C14的亚芳基或者C3～C14的亚杂芳基；m4为1～4的整数；R IV 1和R IV 2各自独立地为H、C6～C30的芳基或者C3～C30的杂芳基；Ar IV为以下结构：
Figure PCTCN2019084389-appb-000088
X IV 1～X IV 6为C、CR IV 3或者N，且至少一个X为N，R IV 3为H、C6～C30的芳基或者含1～3个杂原子的C3～C30的杂芳基。
其中，优选-L IV-Ar IV不为吡啶基、苯基吡啶基或吡啶基苯基。
发明人发现了喹唑啉并三氮唑类化合物用作有机电致发光器件的有机层材料时，器件效率相比现有技术显著提高。上述具有喹唑啉并三氮唑母核的本发明化合物作为电子传输材料性能优异的具体原因尚不明确，推测可能是以下的原因：首先，本发明选择了具有较强电子亲和能力的基团，如吡啶基、嘧啶基、三嗪基等基团，来提高材料的电子注入和传输性能；其次，本发明的化合物引入了新型的具有较大共轭结构的喹唑啉并三氮唑母核，同时引入了诸如嘧啶、三嗪及其衍生物类缺电子基团，从而使其具有高的电子亲和势，因而与阴极材料的功函数更加接近，使得材料能够很容易的从阴极得到电子，具有强电子注入性；同时，本发明的化合物具有非常好的共平面的共轭结构，使得化合物分子在固态下能够充分发生基团间的π-π相互作用，从而有利于电子在材料分子间的传递，使得这类材料具有非常高的电子迁移率。
需要说明的是，X IV 1～X IV 6为C的情况，是该碳原子为Ar IV与L IV的连接点的情况。
在一些实施方案中，作为C6～C30的芳基的例子可举出：苯基、联苯基、萘基、蒽基、菲基、芴基等，其中优选苯基、萘基、更优选苯基。
在一些实施方案中，作为C3～C30的杂芳基的例子可举出：含氮杂芳基、含氧杂芳基、含硫杂芳基等，具体的例如可举出：吡啶基、嘧啶基、吡嗪基、哒嗪基、三嗪 基、喹啉基、异喹啉基、萘啶基、酞嗪基、喹喔啉基、喹唑啉基、菲啶基、吖啶基、菲咯啉基、吡咯基、咪唑基、吡唑基、三唑基、四唑基、吲哚基、苯并咪唑基、吲唑基、咪唑并吡啶基、苯并三唑基、咔唑基、呋喃基、噻吩基、噁唑基、噻唑基、异噁唑基、异噻唑基、噁二唑基、噻二唑基、苯并呋喃基、苯并噻吩基、苯并噁唑基、苯并噻唑基、苯并异噁唑基、苯并异噻唑基、苯并噁二唑基、苯并噻二唑基、二苯并呋喃基、二苯并噻吩基、哌啶基、吡咯烷基、哌嗪基、吗啉基、吩嗪基、吩噻嗪基、吩噁嗪基等，其中优选吡啶基、二苯并呋喃基、二苯并噻吩基。
上述化合物中，所述结构式(IV)优选选自结构式(IV-1)～(IV-3)中的任一种：
Figure PCTCN2019084389-appb-000089
n4为1～4的整数。
进一步地，所述结构式(IV)更优选选自结构式(IV-2)～(IV-3)中的任一种，最优选为结构式(IV-3)。
通过将结构式(IV)进一步限定为结构式(IV-2)或(IV-3)(特别是结构式(IV-3))，即，将Ar IV限定为R IV 3取代或未取代的嘧啶基或三嗪基(特别是三嗪基)，可以进一步提高使用了本发明化合物的有机电致发光器件的电流效率，降低起降电压。
上述化合物中，L IV优选为取代或未取代的亚苯基，所述取代基选自苯基、萘基、菲基、氰基苯基中的一种。
上述化合物中，R IV 1优选为苯基、萘基、菲基、联苯基或9,9-二甲基芴基。
上述化合物中，m4优选为1，R IV 2优选为H或苯基。
上述化合物中，R IV 3优选选自苯基、萘基或联苯基，进一步优选为苯基。
通过将R IV 3限定为上述基团，可以进一步扩大共轭结构，有利于电子在材料分子间的传递，使本发明的化合物具有更高的电子迁移率。
进一步地，Ar IV优选为二取代的嘧啶基、喹唑啉基或三嗪基，更优选为二取代的嘧啶基或三嗪基，最优选为二取代的三嗪基。
通过进一步将Ar IV限定为上述基团，可以进一步提高使用了本发明化合物的有机电致发光器件的电流效率，降低起降电压。
更进一步地，作为本发明涉及的化合物的优选结构，可以举出以下所示结构的化合物，但不限于这些化合物：
Figure PCTCN2019084389-appb-000090
Figure PCTCN2019084389-appb-000091
Figure PCTCN2019084389-appb-000092
有机OLED显示器件一般包括位于第一电极和第二电极，以及位于电极之间的有机材料层。该有机材料又可以分为多个区域。比如，该有机材料层可以包括空穴传输区、发光层、电子传输区。
除使用本发明化合物以外，本发明的有机电致发光器件的结构和制备与现有的器件并无特殊不同，一般包括下述要素和相关制备步骤，
在第一电极下方或者第二电极上方可以使用基板。基板均为具有机械强度、热稳定性、防水性、透明度优异的玻璃或聚合物材料。此外，作为显示器用的基板上也可以带有薄膜晶体管(TFT)。
第一电极可以通过在基板上溅射或者沉积用作第一电极的材料的方式来形成。当第一电极作为阳极时，可以采用铟锡氧(ITO)、铟锌氧(IZO)、二氧化锡(SnO 2)、氧化锌(ZnO)等氧化物透明导电材料和它们的任意组合。第一电极作为阴极时，可以采用镁(Mg)、银(Ag)、铝(Al)、铝-锂(Al-Li)、钙(Ca)、镁-铟(Mg-In)、镁-银(Mg-Ag)等金属或合金以及它们之间的任意组合。
有机材料层可以通过真空热蒸镀、旋转涂敷、打印等方法形成于电极之上。用作有机材料层的化合物可以为有机小分子、有机大分子和聚合物，以及它们的组合。
空穴传输区位于阳极和发光层之间。空穴传输区可以为单层结构的空穴传输层(HTL)，包括只含有一种化合物的单层空穴传输层和含有多种化合物的单层空穴传输层。空穴传输区也可以为包括空穴注入层(HIL)、空穴传输层(HTL)、电子阻挡层(EBL)中的至少一层的多层结构。
空穴传输区的材料可以选自、但不限于酞菁衍生物如CuPc、导电聚合物或含导电掺杂剂的聚合物如聚苯撑乙烯、聚苯胺/十二烷基苯磺酸(Pani/DBSA)、聚(3,4-乙撑二氧 噻吩)/聚(4-苯乙烯磺酸盐)(PEDOT/PSS)、聚苯胺/樟脑磺酸(Pani/CSA)、聚苯胺/聚(4-苯乙烯磺酸盐)(Pani/PSS)、芳香胺衍生物如下面IV-HT-1至IV-HT-34所示的化合物；或者其任意组合。
Figure PCTCN2019084389-appb-000093
Figure PCTCN2019084389-appb-000094
空穴注入层位于阳极和空穴传输层之间。空穴注入层可以是单一化合物材料，也可以是多种化合物的组合。例如，空穴注入层可以采用上述IV-HT-1至IV-HT-34的一种或多种化合物，或者采用下述IV-HI-1至IV-HI-3中的一种或多种化合物；也可以采用IV-HT-1至IV-HT-34的一种或多种化合物掺杂下述IV-HI-1至IV-HI-3中的一种或多种化合物。
Figure PCTCN2019084389-appb-000095
发光层包括可以发射不同波长光谱的的发光染料(即掺杂剂，dopant)，还可以同时包括主体材料(Host)。发光层可以是发射红、绿、蓝等单一颜色的单色发光层。多种不同颜色的单色发光层可以按照像素图形进行平面排列，也可以堆叠在一起而形成彩色发光层。当不同颜色的发光层堆叠在一起时，它们可以彼此隔开，也可以彼此相连。发光层也可以是能同时发射红、绿、蓝等不同颜色的单一彩色发光层。
根据不同的技术，发光层材料可以采用荧光电致发光材料、磷光电致发光材料、热活化延迟荧光发光材料等不同的材料。在一个OLED器件中，可以采用单一的发光技术，也可以采用多种不同的发光技术的组合。这些按技术分类的不同发光材料可以发射同种颜色的光，也可以发射不同种颜色的光。
在本发明的一方面，发光层采用荧光电致发光的技术。其发光层荧光主体材料可以选自、但不限于以下所罗列的IV-BFH-1至IV-BFH-17的一种或多种的组合。
Figure PCTCN2019084389-appb-000096
在本发明的一方面，发光层采用荧光电致发光的技术。其发光层荧光掺杂剂可以 选自、但不限于以下所罗列的IV-BFD-1至IV-BFD-12的一种或多种的组合。
Figure PCTCN2019084389-appb-000097
本发明的有机EL发光器件包括发光层与阴极之间的电子传输区。电子传输区可以为单层结构的电子传输层(ETL)，包括只含有一种化合物的单层电子传输层和含有多种化合物的单层电子传输层。电子传输区也可以为包括电子注入层(EIL)、电子传输层(ETL)、空穴阻挡层(HBL)中的至少一层的多层结构。
电子传输区也可以为包括电子注入层(EIL)、电子传输层(ETL)、空穴阻挡层(HBL)中的至少一层的多层结构应用本发明的化合物来形成，当然电子传输区的材料还可以与以下所罗列的IV-ET-1至IV-ET-58的一种或多种的组合。
Figure PCTCN2019084389-appb-000098
Figure PCTCN2019084389-appb-000099
Figure PCTCN2019084389-appb-000100
器件中还可以包括位于电子传输层与阴极之间的电子注入层，电子注入层材料包括但不限于以下罗列的一种或多种的组合。
LiQ,LiF,NaCl,CsF,Li 2O,Cs 2CO 3,BaO,Na,Li,Ca。
形成以上各层的方法是公知的，例如可以使用蒸镀法、溅射法、溶液涂布法等。
实施例
下面将以多个合成实施例为例来详述本发明的上述新化合物的具体制备方法，但本发明的制备方法并不限于这些合成实施例，本领域技术人员可以在其基础上在不悖离本发明原则的前提下进行任何修改、等同替换、改进等，而将该方法扩展到本发明的权利要求书要求保护的技术方案的范围之内。
本发明中所用的各种化学药品如石油醚、乙酸乙酯、硫酸钠、甲苯、四氢呋喃、二氯甲烷、乙酸、磷酸钾、叔丁醇钠等基础化工原料均购自市面上常见的化工产品提供商，包括但不限于上海泰坦科技股份有限公司和西陇化工股份有限公司。确定下述化合物所用的质谱仪采用的是ZAB-HS型质谱仪测定(英国Micromass公司制造)。在本发明中，核磁采用BRUKER 500MHZ核磁共振仪(德国BRUKER公司制造)进行测定。
合成实施例I
合成实施例I-1：化合物I-C1的合成
Figure PCTCN2019084389-appb-000101
化合物I-1-1的制备
在烧瓶中将2,4-二氯喹唑啉(500g,2.5mol)溶于10L乙醇后，搅拌下在5℃滴加水合肼(470g，7.5mol，80％水溶液)，滴加过程保持温度低于10℃。滴加完毕自然升至室温反应1小时，抽滤析出的固体，用水和乙醇分别洗涤，晾干得到类白色固体化合物I-1-1(415g,86％)。
化合物I-1-2的制备
将化合物I-1-1(200g,1.03mol)加入含有2L乙醇的烧瓶中，室温搅拌下滴加苯甲醛(120g，1.13mol)，滴加完毕继续搅拌反应30分钟，过滤所得固体，分别用乙醇和正己烷淋洗，干燥得黄色固体化合物I-1-2(184g,63％)。
化合物I-1-3的制备
将化合物I-1-2(184g,652.4mmol)加入含有4L乙醇的烧瓶中，室温搅拌下分批加 入醋酸碘苯(252g，782.9mmol)，添加完毕后，继续搅拌反应1.5小时，TLC显示反应完全。加入4L正己烷搅拌5分钟后抽滤析出的固体，用正己烷淋洗，干燥得淡棕黄色固体化合物I-1-3(130g,71％)。
化合物I-1-4的制备
将2-(4-溴-苯基)-4,6-二苯基-1,3,5-三嗪(387g,1mol)、硼酸频哪醇酯(381g,1.5mol)和醋酸钾(294g,3mol)加入含1,4-二氧六环(3L)的烧瓶中，室温搅拌下置换氮气后加入Pd(dppf 2)Cl 2(7.32g,0.01mol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物I-1-4(370g,收率85％)。
化合物I-C1的制备
将化合物I-1-3(5g,18mmol)、化合物I-1-4(7.8g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物I-C1(7g,收率70％)。分子量计算值：553.20，实测值C/Z:553.2。
合成实施例I-2：化合物I-C22的合成
Figure PCTCN2019084389-appb-000102
化合物I-2-1的制备
将2-氯-4-苯基喹唑啉(24g,0.1mol)、4-氯苯硼酸(17.2g,0.11mol)和碳酸钾(41g,0.3mol)溶于含甲苯/乙醇/水(150mL/50mL/50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(1.16g,0.001mol)。添加完毕后，搅拌回流反应4小时，TLC监控反应终点。降至室温后分液，水相用甲苯萃取，合并有机相，用无水硫酸钠干燥，减压旋干溶剂，柱层析分离提纯(洗脱剂为石油醚：二氯甲烷＝5:1～2:1)，得到化合物I-2-1(24.3g,收率77％)。
化合物I-2-2的制备
将化合物I-2-1(22g,0.07mol)、硼酸频哪醇酯(25.4g,0.1mol)和醋酸钾(20.6g,0.21mol)加入含1,4-二氧六环(200mL)的烧瓶中，室温搅拌下置换氮气后加入Pd2(dba)3(641mg,0.7mmol)和2-二环己基膦-2′,6′-二甲氧基-联苯(下文简称为sphos)(900mg,1.4mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物I-2-2(22.8g,收率80％)。
化合物I-C22的制备
将化合物I-1-3(5g,18mmol)、化合物I-2-2(7.4g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为石油醚：二氯甲烷＝5:1～1:1)得到白色固体化合物I-C22(7.3g,收率77％)。分子量计算值：526.19，实测值C/Z:526.2。
合成实施例I-3：化合物I-C31的合成
Figure PCTCN2019084389-appb-000103
化合物I-3-1的制备
将2-(3-溴-苯基)-4,6-二苯基-1,3,5-三嗪(387g,1mol)、硼酸频哪醇酯(381g,1.5mol)和醋酸钾(294g,3mol)加入含1,4-二氧六环(3L)的烧瓶中，室温搅拌下置换氮气后加入Pd(dppf) 2Cl 2(8.17g,0.01mol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物I-3-1(357g,收率82％)。
化合物I-C31的制备
将化合物I-1-3(5g,18mmol)、化合物I-3-1(7.8g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物I-C31(7.4g,收率75％)。分子量计算值：553.20，实测值C/Z:553.2。
合成实施例I-4：化合物I-C63的合成
Figure PCTCN2019084389-appb-000104
化合物I-4-2的制备
将化合物I-4-1(42.1g,0.1mol)、3-吡啶硼酸(13.5g,0.11mol)和碳酸钾(41.4g,0.3mol)溶于含甲苯/乙醇/水(300mL/50mL/50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(1.15g,0.001mol)。添加完毕后，搅拌回流反应4小时，TLC监控反应终点。降至室温后抽滤，固体依次用甲苯、水、乙醇淋洗，晾干。柱层析分离提纯(洗脱剂为二氯甲烷：乙酸乙酯＝5:1～1:1)，得到化合物I-4-2(37.8g,收率90％)。
化合物I-4-3的制备
将化合物I-4-2(33.6g,0.08mol)、硼酸频哪醇酯(30.5g,0.12mol)和醋酸钾(24g,0.24mol)加入含1,4-二氧六环(300mL)的烧瓶中，室温搅拌下置换氮气后加入Pd 2(dba) 3(733mg,0.8mmol)和sphos(1g,1.6mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物I-4-3(32.4g,收率79％)。
化合物I-C63的制备
将化合物I-1-3(5g,18mmol)、化合物I-4-3(9.2g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析 (洗脱剂为二氯甲烷)得到白色固体化合物I-C63(8g,收率71％)。分子量计算值：630.22，实测值C/Z:630.2。
1H NMR(500MHz,Chloroform)δ9.24(s,1H),8.70(s,1H),8.43–8.24(m,9H),8.14(d,J＝7.7Hz,2H),8.01(s,1H),7.79(s,1H),7.60–7.41(m,11H).
合成实施例II
合成实施例II-1：
化合物II-C7的合成
Figure PCTCN2019084389-appb-000105
化合物II-1-1的制备
在烧瓶中将2,4-二氯喹唑啉(500g,2.5mol)溶于10L乙醇后，搅拌下在5℃滴加水合肼(470g，7.5mol，80％水溶液)，滴加过程保持温度低于10℃。滴加完毕自然升至室温反应1小时，抽滤析出的固体，用水和乙醇分别洗涤，晾干得到类白色固体化合物II-1-1(415g,86％)。
化合物II-1-2的制备
将化合物II-1-1(200g,1.03mol)加入含有2L乙醇的烧瓶中，室温搅拌下滴加9,9-二甲基-2-芴甲醛(251g，1.13mol)，滴加完毕继续搅拌反应30分钟，过滤所得固体，分别用乙醇和正己烷淋洗，干燥得黄色固体化合物II-1-2(266g,65％)。
化合物II-1-3的制备
将化合物II-1-2(260g,652.4mmol)加入含有4L乙醇的烧瓶中，室温搅拌下分批加入醋酸碘苯(252g，782.9mmol)，添加完毕后，继续搅拌反应1.5小时，TLC显示反应完全。加入4L正己烷搅拌5分钟后抽滤析出的固体，用正己烷淋洗，干燥得淡棕黄色固体化合物II-1-3(181g,70％)。
化合物II-C7的制备
将化合物II-1-3(7.1g,18mmol)、化合物II-1-4(7.8g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物II-C7(6g,收率50％)。分子量计算值：669.26，实测值C/Z:669.3。
合成实施例II-2：
化合物II-C15的合成
Figure PCTCN2019084389-appb-000106
化合物II-2-2的制备
将化合物II-2-1(42.1g,0.1mol)、苯硼酸(13.5g,0.11mol)和碳酸钾(41.4g,0.3mol)溶于含甲苯/乙醇/水(300mL/50mL/50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(1.15g,0.001mol)。添加完毕后，搅拌回流反应4小时，TLC监控反应终点。降至室温后抽滤，固体依次用甲苯、水、乙醇淋洗，晾干。柱层析分离提纯(洗脱剂为二氯甲烷)，得到化合物II-2-2(38.1g,收率91％)。
化合物II-2-3的制备
将化合物II-2-2(33.5g,0.08mol)、硼酸频哪醇酯(30.5g,0.12mol)和醋酸钾(24g, 0.24mol)加入含1,4-二氧六环(300mL)的烧瓶中，室温搅拌下置换氮气后加入Pd 2(dba) 3(733mg,0.8mmol)和sphos(1g,1.6mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物II-2-3(32.7g,收率80％)。
化合物II-2-4的制备
将化合物II-1-1(200g,1.03mol)加入含有2L乙醇的烧瓶中，室温搅拌下滴加3-苯基苯甲醛(206g，1.13mol)，滴加完毕继续搅拌反应30分钟，过滤所得固体，分别用乙醇和正己烷淋洗，干燥得黄色固体化合物II-2-4(251g,68％)。
化合物II-2-5的制备
将化合物II-2-4(234g,652.4mmol)加入含有4L乙醇的烧瓶中，室温搅拌下分批加入醋酸碘苯(252g，782.9mmol)，添加完毕后，继续搅拌反应1.5小时，TLC显示反应完全。加入4L正己烷搅拌5分钟后抽滤析出的固体，用正己烷淋洗，干燥得淡棕黄色固体化合物II-2-5(167g,72％)。
化合物II-C15的制备
将化合物II-2-3(9.2g,18mmol)、化合物II-2-5(6.4g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物II-C15(8g,收率72％)。分子量计算值：705.26，实测值C/Z:705.3。
合成实施例II-3：
化合物II-C2的合成
Figure PCTCN2019084389-appb-000107
合成方法同化合物II-C7，不同之处在于使用3-苯基苯甲醛替代2-醛基-9，9-二甲基芴。所得化合物II-C2分子量计算值：629.23，实测值C/Z:629.2。
合成实施例II-4：
化合物II-C3的合成
Figure PCTCN2019084389-appb-000108
合成方法同化合物II-C7，不同之处在于使用3-(3-联苯基)苯甲醛替代2-醛基-9，9-二甲基芴。所得化合物II-C3分子量计算值：705.26，实测值C/Z:705.3。
合成实施例II-5：
化合物II-C16的合成
Figure PCTCN2019084389-appb-000109
合成方法同化合物II-C15，不同之处在于使用2-醛基-9，9-二甲基芴替代3-苯基苯甲醛。所得化合物II-C16分子量计算值：745.30，实测值C/Z:745.3。
合成实施例II-6：
化合物II-C25的合成
Figure PCTCN2019084389-appb-000110
合成方法同化合物II-C7，不同之处在于使用乙基醛替代2-醛基-9，9-二甲基芴。所得化合物II-C25分子量计算值：505.20，实测值C/Z:505.2。
合成实施例III
合成实施例III-1：
化合物III-C1的合成
Figure PCTCN2019084389-appb-000111
化合物III-1-1的制备
在烧瓶中将2,4-二氯喹唑啉(500g,2.5mol)溶于10L乙醇后，搅拌下在5℃滴加水合肼(470g，7.5mol，80％水溶液)，滴加过程保持温度低于10℃。滴加完毕自然升至室温反应1小时，抽滤析出的固体，用水和乙醇分别洗涤，晾干得到类白色固体化合物III-1-1(415g,86％)。
化合物III-1-2的制备
将化合物III-1-1(200g,1.03mol)加入含有2L乙醇的烧瓶中，室温搅拌下滴加苯甲醛(120g，1.13mol)，滴加完毕继续搅拌反应30分钟，过滤所得固体，分别用乙醇和正己烷淋洗，干燥得黄色固体化合物III-1-2(189g,65％)。
化合物III-1-3的制备
将化合物III-1-2(180g,638mmol)加入含有4L乙醇的烧瓶中，室温搅拌下分批加入醋酸碘苯(247g，766mmol)，添加完毕后，继续搅拌反应1.5小时，TLC显示反应完全。加入4L正己烷搅拌5分钟后抽滤析出的固体，用正己烷淋洗，干燥得淡棕黄色固体化合物III-1-3(125g,70％)。
化合物III-1-5的制备
将2-氯-4,6-二苯基-1,3,5-三嗪(26.7g,100mmol)，3-氯-3-联苯硼酸即化合物III-1-4(23.2g,100mmol)，碳酸钾(41.4g,300mmol)，pd(dppf)Cl2(732mg,1mmol)加入含有500mL四氢呋喃和100mL水的烧瓶中，氮气氛加热回流反应4小时，TLC显示反应完全。冷却至室温，分液，水相用乙酸乙酯萃取，合并有机相,无水硫酸钠干燥，过滤， 减压旋干得粗品，柱层析分离提纯得化合物III-1-5(27g,65％)。
化合物III-1-6的制备
将化合物III-1-5(21g,0.05mol)、硼酸频哪醇酯(38.1g,0.15mol)和醋酸钾(15g,0.15mol)加入含1,4-二氧六环(300mL)的烧瓶中，室温搅拌下置换氮气后加入Pd2(dba)3(458mg,0.5mmol)和sphos(410mg,1mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物III-1-6(20.4g,收率80％)。
化合物III-C1的制备
将化合物III-1-3(5.04g,18mmol)、化合物III-1-6(9.2g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh3)4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物III-C1(7.9g,收率70％)。分子量计算值：629.23，实测值C/Z:629.2。
合成实施例III-2：
化合物III-C20的合成
Figure PCTCN2019084389-appb-000112
采用与III-C1相似的合成方法合成。所不同的是第一步反应用4-氰基苯甲醛替代苯甲醛合成中间体III-2-3。通过相似的合成方法得白色固体化合物III-C20，分子量计算值：654.23，实测值C/Z:654.2。
合成实施例III-3：
化合物III-C22的合成
Figure PCTCN2019084389-appb-000113
采用与III-C1相似的合成方法合成。所不同的是第一步反应用2-氯-4-苯基-6-(2-萘基)-1,3,5-三嗪替代2-氯-4,6-二苯基-1,3,5-三嗪合成中间体III-3-3。最后一步通过相似的合成方法得白色固体化合物III-C22，分子量计算值：679.25，实测值C/Z:679.3。
合成实施例III-4：
化合物III-C37的合成
Figure PCTCN2019084389-appb-000114
采用与III-C1相似的合成方法合成。所不同的是第一步反应用2-苯基苯甲醛替代苯甲醛合成中间体III-4-2；第三步用化合物III-4-3替代化合物III-1-4合成中间体III-4-5；最后一步通过相似的合成方法得白色固体化合物III-C37，分子量计算值：705.26，实测值C/Z:705.3。
合成实施例III-5：
化合物III-C55的合成
Figure PCTCN2019084389-appb-000115
采用与III-C1相似的合成方法合成。所不同的是第一步反应用2-氯-4-苯基-6-(4-联苯基)-1,3,5-三嗪替代2-氯-4,6-二苯基-1,3,5-三嗪，用化合物III-4-3替代化合物III-1-4合成中间体III-5-3。最后一步通过相似的合成方法得白色固体化合物III-C55，分子量计算值：705.26，实测值C/Z:705.3。
合成实施例III-6：
化合物III-C72的合成
Figure PCTCN2019084389-appb-000116
化合物III-C72的合成
采用与III-C1相似的合成方法合成。所不同的是第一步反应用4-醛基-二苯并噻吩替代苯甲醛合成中间体III-6-2；用化合物III-6-3替代III-1-4合成中间体III-6-5；最后一步用相同的方法得白色固体化合物III-C72，分子量计算值：735.22，实测值C/Z:735.2。
合成实施例III-7：
化合物III-C120的合成
Figure PCTCN2019084389-appb-000117
化合物III-7-1的合成
将化合物4-溴硝基苯(100.5g,0.5mol)、3-氯苯硼酸(78g,0.5mol)和碳酸钾(207g,1.5mol)溶于含甲苯/乙醇/水(1.5L/0.5L/0.5L)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh3)4(5.77g,5mmol)。添加完毕后，搅拌回流反应4小时，TLC监控反应终点。降至室温后抽滤，固体依次用甲苯、水、乙醇淋洗，晾干。柱层析分离提纯得到化合物III-7-1(105g,收率90％)。
化合物III-7-2的制备
将化合物III-7-1(93.2g,0.4mol)、硼酸频哪醇酯(152.4g,0.6mol)和醋酸钾(118g,1.2mol)加入含1,4-二氧六环(3L)的烧瓶中，室温搅拌下置换氮气后加入Pd2(dba)3(2.9g,4mmol)和sphos(3.3g,8mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物III-7-2(104g,收率80％)。
化合物III-7-3的合成
将化合物III-7-2化合物(100g,0.3mol)、2,4-二氯-6-苯基-1,3,5-三嗪(81g,0.36mol)和碳酸钾(124g,0.9mol)溶于含甲苯/乙醇/水(1.5L/0.5L/0.5L)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh3)4(3.5g,3mmol)。添加完毕后，搅拌回流反应4小时，TLC监控反应终点。降至室温后抽滤，固体依次用甲苯、水、乙醇淋洗，晾干。柱层析分离提纯得到化合物III-7-3(59.4g,收率51％)。
化合物III-7-5的制备
将化合物III-7-3化合物(58.2g,150mmol)，化合物III-7-4(34.8g,150mmol)，碳酸钾(62.1g,450mmol)，pd(dppf)Cl2(1.1g,1.5mmol)加入含有1L四氢呋喃和1200mL水 的烧瓶中，氮气氛加热回流反应4小时，TLC显示反应完全。柱层析分离提纯得化合物III-7-5(54.1g,675％)。
化合物III-7-6的制备
将化合物III-7-5(54g,0.1mol)、硼酸频哪醇酯(38.1g,0.15mol)和醋酸钾(44.1g,0.45mol)加入含1,4-二氧六环(1L)的烧瓶中，室温搅拌下置换氮气后加入Pd2(dba)3(916mg,1mmol)和sphos(820mg,2mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物III-7-6(47.4g,收率75％)
化合物III-C120的合成
将化合物III-1-3(5.04g,18mmol)、化合物III-7-6(11.4g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh3)4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物III-C120(7.9g,收率70％)。分子量计算值：750.25，实测值C/Z:750.3。
合成实施例III-8：
化合物III-C139的合成
Figure PCTCN2019084389-appb-000118
化合物III-C139的合成
采用与III-C1相似的合成方法合成。所不同的是第一步反应用中间体III-8-1替代苯甲醛通过相似的合成方法合成中间体III-8-3；第三步用2-氯-4-苯基喹唑啉替代2-氯-4,6-二苯基-1,3,5-三嗪通过相似的方法合成中间体III-8-5；最后一步用相似的方法得到白色固体化合物III-C139，分子量计算值：703.25，实测值C/Z:703.3。
合成实施例III-9：
化合物III-C189的合成
Figure PCTCN2019084389-appb-000119
中间体III-9-2的合成
将化合物III-9-1(21.6g,0.1mol)、4-硝基苯乙酮(16.5g,0.1mol)和甲醇钠(0.54g,0.01mol)溶于含乙醇(500mL)的烧瓶中，置换氮气后室温搅拌反应2小时，然后回流3小时。加入苯甲脒盐酸盐(16.4g,0.105mol)和氢氧化钠(8g,0.2mol)，继续搅拌回流反应4小时，降至室温后抽滤，用水和甲醇洗涤得到化合物III-9-2(20.8g,收率45％)。
化合物III-9-3的制备
将化合物III-9-2(18.5g,0.04mol)、硼酸频哪醇酯(15.2g,0.06mol)和醋酸钾(11.8g,0.12mol)加入含1,4-二氧六环(300mL)的烧瓶中，室温搅拌下置换氮气后加入Pd2(dba)3(290mg,0.4mmol)和sphos(0.33g,0.8mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。过滤析出的固体。水洗，干燥得到化合物III-9-3(18.9g,收率85％)。
化合物III-C189的合成
将化合物III-1-3(5.04g,18mmol)、化合物III-9-3(10g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh3)4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物III-C189(9.5g,收率78％)。分子量计算值：673.22，实测值C/Z:673.2。
合成实施例IV
代表性合成路径：
Figure PCTCN2019084389-appb-000120
第一步，以2,4-二氯喹唑啉与水合肼发生取代反应生成中间体IV-M1；第二步，中间体IV-M1首先与取代醛发生缩合反应，接着在醋酸碘苯作用下氧化关环生成中间体IV-M2；第三步，以中间体IV-M2为原料与硼酸通过Suzuki偶联反应生成中间体IV-M3；第四步，中间体IV-M3转化成相应的硼酸频那醇酯化合物IV-M4；第五步中间体IV-M4与卤代物通过Suzuki偶联反应得到产品。
更具体地，以下给出本发明的代表性化合物的合成方法。
合成实施例IV-1：
化合物IV-C7的合成
Figure PCTCN2019084389-appb-000121
化合物IV-1-1的制备
在烧瓶中将2,4-二氯喹唑啉(500g,2.5mol)溶于10L乙醇后，搅拌下在5℃滴加水合肼(470g，7.5mol，80％水溶液)，滴加过程保持温度低于10℃。滴加完毕自然升至室温反应1小时，抽滤析出的固体，用水和乙醇分别洗涤，晾干得到类白色固体化合物IV-1-1(415g,86％)。
化合物IV-1-2的制备
将化合物IV-1-1(200g,1.03mol)加入含有2L乙醇的烧瓶中，室温搅拌下滴加对氯苯甲醛(158g，1.13mol)，滴加完毕继续搅拌反应30分钟，TLC显示反应完全。室温搅拌下，往上述反应液中滴加溶有醋酸碘苯(364g，1.13mmol)的1L乙醇溶液，滴加完毕后，继续搅拌反应3小时(体系先溶清后析出固体)，TLC显示反应完全。过滤析出固体，用正己烷淋洗，干燥得淡棕黄色固体化合物IV-1-2(200g,62％).
化合物IV-1-3的制备
将化合物IV-1-2(12.5g,40mmol)、9,9-二甲基-2-芴硼酸(9.6g,40mmol)和碳酸钾(16.6g,120mmol)加入含有四氢呋喃：水(150mL：30mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(461mg,0.4mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到类白色固体化合物IV-1-3(14.7g,收率78％)。
化合物IV-1-4的制备
将化合物IV-1-3(14.2g,30mmol)、硼酸频哪醇酯(11.4g,45mmol)和醋酸钾(8.8g,90mmol)加入含1,4-二氧六环(150mL)的烧瓶中，室温搅拌下置换氮气后加入Pd 2(dba) 3(275mg,0.3mmol)和sphos(369mg,0.9mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。减压旋蒸除去溶剂，乙醇洗涤，过滤，干燥得到化合物IV-1-4(13.5g,收率80％)。
化合物IV-C7的制备
将化合物IV-1-4(10.1g,18mmol)、化合物2-氯-4,6-二苯基-1,3,5-三嗪(4.8g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物IV-C7(8.7g,收率72％)。分子量计算值：669.26，实测值C/Z:670.3。
化合物IV-C15的合成
Figure PCTCN2019084389-appb-000122
化合物IV-2-1的制备
将化合物IV-1-1(200g,1.03mol)加入含有2L乙醇的烧瓶中，室温搅拌下滴加间氯苯甲醛(158g，1.13mol)，滴加完毕继续搅拌反应30分钟，TLC显示反应完全。室温搅拌下，往上述反应液中滴加溶有醋酸碘苯(364g,1.13mmol)的1L乙醇溶液，滴加完毕后，继续搅拌反应3小时(体系先溶清后析出固体)，TLC显示反应完全。过滤析出固体，用正己烷淋洗，干燥得淡棕黄色固体化合物IV-2-1(210g,65％)。
化合物IV-2-2的制备
将化合物IV-2-1(12.5g,40mmol)、4-联苯硼酸(7.9g,40mmol)和碳酸钾(16.6g,120mmol)加入含有四氢呋喃：水(150mL：30mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(461mg,0.4mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到类白色固体化合物IV-2-2(13.8g,收率80％)。
化合物IV-2-3的制备
将化合物IV-2-2(13g,30mmol)、硼酸频哪醇酯(11.4g,45mmol)和醋酸钾(8.8g,90mmol)加入含1,4-二氧六环(150mL)的烧瓶中，室温搅拌下置换氮气后加入Pd 2(dba) 3(275mg,0.3mmol)和sphos(369mg,0.9mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。减压旋蒸除去溶剂，乙醇洗涤，过滤，干燥得到化合物IV-2-3(13.5g,收率86％)。
化合物IV-C15的制备
将化合物IV-2-3(9.4g,18mmol)、化合物2-氯-4，6-二苯基-1，3，5-三嗪(4.8g,18mmol) 和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物IV-C15(8.8g,收率78％)。分子量计算值：629.23，实测值C/Z:629.2。
化合物IV-C30的合成
Figure PCTCN2019084389-appb-000123
化合物IV-3-1的制备
将化合物3-溴-5-氯苯甲醛(21.8g,100mmol)、9-菲硼酸(22.2g,100mmol)和碳酸钾(41.4g,300mmol)加入含有四氢呋喃：水(250mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(1155mg,1mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到淡黄色油状化合物IV-3-1(28.4g,收率90％)。
化合物IV-3-2的制备
将化合物IV-1-1(15.8g,80mol)加入含有300mL乙醇的烧瓶中，室温搅拌下滴加化合物IV-3-1(28.4g,90mol)，滴加完毕继续搅拌反应30分钟，TLC显示反应完全。室温搅拌下，往上述反应液中滴加溶有醋酸碘苯(30g,90mmol)的150mL乙醇溶液，滴加完毕后，继续搅拌反应3小时(体系先溶清后析出固体)，TLC显示反应完全。过滤析出固体，用正己烷淋洗，干燥得棕黄色固体化合物IV-3-2(23.9g,61％)。
化合物IV-3-3的制备
将化合物IV-3-2(19.6g,40mmol)、苯硼酸(4.9g,40mmol)和碳酸钾(16.6g,120mmol)加入含有四氢呋喃：水(150mL：30mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(461mg,0.4mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到类白色固体化合物IV-3-3(18.3g,收率86％)。
化合物IV-3-4的制备
将化合物IV-3-3(16g,30mmol)、硼酸频哪醇酯(11.4g,45mmol)和醋酸钾(8.8g,90mmol)加入含1,4-二氧六环(150mL)的烧瓶中，室温搅拌下置换氮气后加入Pd 2(dba) 3(275mg,0.3mmol)和sphos(369mg,0.9mmol)。添加完毕后，搅拌回流反应24小时，TLC监控反应终点。减压旋蒸除去溶剂，乙醇洗涤，过滤，干燥得到化合物IV-3-4(15.1g,收率81％)。
化合物IV-C30的制备
将化合物IV-3-4(11.2g,18mmol)、化合物2-氯-4,6-二苯基-1,3,5-三嗪(4.8g,18mmol)和碳酸钾(7.45g,54mmol)加入含有1,4-二氧六环：水(150mL：50mL)的烧瓶中，室温搅拌下置换氮气后加入Pd(PPh 3) 4(208mg,0.18mmol)。添加完毕后，氮气氛搅拌下加热回流反应12小时，TLC显示反应完全。过滤析出的白色固体。用二氯甲烷溶解，用无水硫酸钠干燥，柱层析(洗脱剂为二氯甲烷)得到白色固体化合物IV-C30(9.8g,收率75％)。分子量计算值：729.26，实测值C/Z:729.3。
器件实施例
下面通过将本发明的化合物具体应用到有机电致发光器件中测试实际使用性能来展示和验证本发明的技术效果和优点。
器件实施例I
为了方便比较本发明的发光材料的器件应用性能，使用下述所示的化合物I-ET-46和I-ET-58作为对比材料。
Figure PCTCN2019084389-appb-000124
(A)有机电致发光器件的制备
本实施例中有机电致发光器件制备过程如下：
将涂布了ITO透明导电层的玻璃板在商用清洗剂中超声处理，在去离子水中冲洗，在丙酮：乙醇混合溶剂中超声除油，在洁净环境下烘烤至完全除去水分，用紫外光和臭氧清洗，并用低能阳离子束轰击表面；
把上述带有阳极的玻璃基片置于真空腔内，抽真空至压强小于10 -5Pa，在上述阳极层膜上利用多源共蒸的方法，调节空穴传输材料I-HT-33蒸镀速率为0.1nm/s，空穴注入材料I-HT-32蒸镀速率7％比例设定，蒸镀总膜厚为10nm；
在空穴注入层之上真空蒸镀I-HT-33作为器件的第一空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为40nm；
在第一空穴传输层之上真空蒸镀I-HT-34作为器件的第二空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为10nm；
在第二空穴传输层之上真空蒸镀器件的发光层，发光层包括主体材料和染料材料，利用多源共蒸的方法，调节主体材料I-BFH-4蒸镀速率为0.1nm/s，染料I-BFD-4蒸镀速率5％比例设定，蒸镀总膜厚为20nm；
在第发光层之上真空蒸镀I-ET-17作为器件的空穴阻挡层，蒸镀速率为0.1nm/s，蒸镀总膜厚为5nm；
在空穴阻挡层之上利用多源共蒸的方法，调节本发明电子传输材料I-C1～I-C95或对比材料I-ET-46和I-ET-58蒸镀速率为0.1nm/s，与I-ET-57蒸镀速率100％比例设定，蒸镀总膜厚为23nm；
在电子传输层(ETL)上真空蒸镀厚度为1nm的LiF作为电子注入层，厚度为80nm的Al层作为器件的阴极。
(B)有机电致发光器件的测试方法
对由上述过程制备的有机电致发光器件进行如下性能测定：
在同样亮度下，使用Photo Research公司的PR 750型光辐射计ST-86LA型亮度计(北京师范大学光电仪器厂)及Keithley4200测试系统测定实施例I-1～I-6以及比较例I-1和I-2中制备得到的有机电致发光器件的驱动电压和电流效率。具体而言，以每秒0.1V的速率提升电压，测定当有机电致发光器件的亮度达到1000cd/m 2时的电压即驱动电压，同时测出此时的电流密度；亮度与电流密度的比值即为电流效率；
实施例I-1
使用本发明化合物I-C1作为电子传输材料，按照上述有机电致发光器件的制备过程制备有机电致发光器件，并按照上述有机电致发光器件测试方法进行器件性能测试。
实施例I-2
采用与实施例I-1相同的方法制备得到有机电致发光器件，不同在于，将化合物I-C1替换为I-C22。
实施例I-3
采用与实施例I-1相同的方法制备得到有机电致发光器件，不同在于，将化合物I-C1替换为I-C31。
实施例I-4
采用与实施例I-1相同的方法制备得到有机电致发光器件，不同在于，将化合物I-C1替换为I-C63。
实施例I-5
采用与实施例I-4相同的方法制备得到有机电致发光器件，不同在于，在空穴阻挡层之上不掺I-ET-57，单独以蒸镀速率为0.1nm/s蒸镀I-C63作为电子传输材料，总膜厚为23nm。
实施例I-6
采用与实施例I-3相同的方法制备得到有机电致发光器件，不同在于，在发光层之上真空蒸镀I-C31作为器件的空穴阻挡层，蒸镀速率为0.1nm/s，蒸镀总膜厚为5nm。
比较例I-1：
采用与实施例I-1相同的方法制备得到有机电致发光器件，不同在于，将化合物I-C1替换为I-ET-46。
比较例I-2：
采用与实施例I-1相同的方法制备得到有机电致发光器件，不同在于，将化合物 C1替换为I-ET-58。
有机电致发光器件性能见下表：
[表I-1]
Figure PCTCN2019084389-appb-000125
就实施例I-1至I-4与比较例I-1而言，在有机电致发光器件结构中其他材料相同的情况下，本发明涉及的化合物相比于比较例I-1中的电子传输材料I-ET-46和比较例I-2中的电子传输材料I-ET-58，电压降低明显，效率也有较大幅度提升。
实施例I-5表明在不掺杂LiQ(I-ET-57)作为电子传输材料的情况下，单独使用本发明化合物作为电子传输材料与比较例I-1中的电子传输材料I-ET-46和比较例I-2中的电子传输材料I-ET-58掺杂LiQ使用的情况相比，电压略低，电流效率略高，从而表明本发明涉及的化合物在不掺杂LiQ的情况下、即工艺简化的情况下，也能实现令人满意的性能。
实施例I-6表明用本发明材料同时作为空穴阻挡材料和电子传输材料，与使用I-ET-17作为空穴阻挡材料并且本发明材料仅作为电子传输材料相比，其光电性能(电压和效率)基本一致。这样在保证光电性能的前提下，简化了器件的制备工艺。
以上实验数据表明，本发明的新型有机材料作为有机电致发光器件的电子传输材料，是性能良好的有机发光功能材料，有望推广商业化应用。
器件实施例II
(A)有机电致发光器件的制备
本实施例中有机电致发光器件制备过程如下：
将涂布了ITO透明导电层的玻璃板在商用清洗剂中超声处理，在去离子水中冲洗，在丙酮：乙醇混合溶剂中超声除油，在洁净环境下烘烤至完全除去水分，用紫外光和臭氧清洗，并用低能阳离子束轰击表面；
把上述带有阳极的玻璃基片置于真空腔内，抽真空至压强小于10 -5Pa，在上述阳极层膜上利用多源共蒸的方法，调节空穴传输材料II-HT-28蒸镀速率为0.1nm/s，空穴注入材料II-HI-2蒸镀速率7％比例设定，蒸镀总膜厚为10nm；
在空穴注入层之上真空蒸镀II-HT-28作为器件的第一空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为40nm；
在第一空穴传输层之上真空蒸镀II-HT-32作为器件的第二空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为10nm；
在第二空穴传输层之上真空蒸镀器件的发光层，发光层包括主体材料和染料材料，利用多源共蒸的方法，调节主体材料II-BFH-4蒸镀速率为0.1nm/s，染料II-BFD-4蒸镀速率5％比例设定，蒸镀总膜厚为20nm；
在发光层之上真空蒸镀II-ET-17作为器件的空穴阻挡层，蒸镀速率为0.1nm/s，蒸镀总膜厚为5nm；
在空穴阻挡层之上利用多源共蒸的方法，调节本发明电子传输材料II-C1～II-C32或对比材料II-ET46、II-ET58蒸镀速率为0.1nm/s，与II-ET-57蒸镀速率100％比例设定，蒸镀总膜厚为23nm；
在电子传输层(ETL)上真空蒸镀厚度为1nm的LiF作为电子注入层，厚度为80nm的Al层作为器件的阴极。
(B)有机电致发光器件的测试方法
对由上述过程制备的有机电致发光器件进行如下性能测定：
在同样亮度下，使用Photo Research公司的PR 750型光辐射计ST-86LA型亮度计(北京师范大学光电仪器厂)及Keithley4200测试系统测定实施例II-1～II-7以及比较例II-1～II-2中制备得到的有机电致发光器件的驱动电压和电流效率。具体而言，以每秒0.1V的速率提升电压，测定当有机电致发光器件的亮度达到1000cd/m2时的电压即驱动电压，同时测出此时的电流密度；亮度与电流密度的比值即为电流效率；
实施例II-1
使用本发明化合物II-C2作为电子传输材料，按照上述有机电致发光器件的制备过程制备有机电致发光器件，并按照上述有机电致发光器件测试方法进行器件性能测试。
实施例II-2
采用与实施例II-1相同的方法制备得到有机电致发光器件，不同在于，将化合物II-C2替换为II-C7。
实施例II-3
采用与实施例II-1相同的方法制备得到有机电致发光器件，不同在于，将化合物II-C2替换为II-C15。
实施例II-4
采用与实施例II-1相同的方法制备得到有机电致发光器件，不同在于，将化合物II-C2替换为II-C16。
实施例II-5
采用与实施例II-1相同的方法制备得到有机电致发光器件，不同在于，将化合II-C2替换为II-C25。
实施例II-6
采用与实施例II-3相同的方法制备得到有机电致发光器件，不同在于，在发光层之上未蒸镀II-ET-17作为器件的空穴阻挡层。
实施例II-7
采用与实施例II-1相同的方法制备得到有机电致发光器件，不同在于，将化合物II-C2替换为II-C3。
比较例II-1：
采用与实施例II-1相同的方法制备得到有机电致发光器件，不同在于，将化合物II-C2替换为II-ET-46。
比较例II-2：
采用与实施例II-1相同的方法制备得到有机电致发光器件，不同在于，将化合物II-C2替换为II-ET-58。
有机电致发光器件性能见下表：
[表II-1]
编号 化合物编号 要求亮度(cd/m 2) 电压(V) 电流效率(cd/A)
实施例II-1 本发明材料II-C2 1000.00 3.71 9.56
实施例II-2 本发明材料II-C7 1000.00 3.69 9.67
实施例II-3 本发明材料II-C15 1000.00 3.83 9.45
实施例II-4 本发明材料II-C16 1000.00 3.86 9.34
实施例II-5 本发明材料II-C25 1000.00 4.34 7.57
实施例II-6 本发明材料II-C15 1000.00 3.67 9.49
实施例II-7 本发明材料II-C3 1000.00 3.79 9.26
比较例II-1 比较材料II-ET-46 1000.00 4.49 7.30
比较例II-2 比较材料II-ET-58 1000.00 4.43 7.47
就实施例II-1至II-4和II-7与比较例II-1、II-2而言，在有机电致发光器件结构中其他材料相同的情况下，本发明涉及的化合物相比于比较例II-1中的电子传输材料II-ET-46和比较例II-2中的电子传输材料II-ET-58，电压降低明显，效率也有较大幅度提升。其原因尚不明确，据推测可能是由于实施例中的电子传输材料中由于同时含有喹唑啉并三氮唑和三嗪基团，分子整体的缺电子性较比较例分子更强的缘故。
实施例II-5中使用本发明化合物II-C25作为电子传输材料，其虽然也能得到比比较例II-1、II-2性能更好的有机电致发光器件，但与本发明实施例II-1至II-4和II-7相比，电压较高，效率较低。这说明与芴基、联苯基或三联苯基相比，在三氮唑的位置引入烷基较不利于电子的注入和传输。
以上实验数据表明，本发明的新型有机材料作为有机电致发光器件的电子传输材料，是性能良好的有机发光功能材料，有望推广商业化应用。
器件实施例III
为了方便比较本发明的发光材料的器件应用性能，使用下述所示的现有技术中化 合物III-ET-9、III-ET-46和III-ET-80作为对比材料。
Figure PCTCN2019084389-appb-000126
本实施例中有机电致发光器件制备过程如下：
将涂布了ITO透明导电层的玻璃板在商用清洗剂中超声处理，在去离子水中冲洗，在丙酮：乙醇混合溶剂中超声除油，在洁净环境下烘烤至完全除去水份，用紫外光和臭氧清洗，并用低能阳离子束轰击表面；
把上述带有阳极的玻璃基片置于真空腔内，抽真空至压强小于10 -5Pa，在上述阳极层膜上利用多源共蒸的方法，调节空穴传输材料III-HT-28蒸镀速率为0.1nm/s，空穴注入材料III-HI-2蒸镀速率7％比例设定，蒸镀总膜厚为10nm；
在空穴注入层之上真空蒸镀III-HT-4作为器件的第一空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为40nm；
在第一空穴传输层之上真空蒸镀III-HT-14作为器件的第二空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为10nm；
在第二空穴传输层之上真空蒸镀器件的发光层，发光层包括主体材料和染料材料，利用多源共蒸的方法，调节主体材料III-BFH-4蒸镀速率为0.1nm/s，染料III-BFD-4 蒸镀速率5％比例设定，蒸镀总膜厚为20nm；
在发光层之上真空蒸镀III-ET-17作为器件的空穴阻挡层，蒸镀速率为0.1nm/s，蒸镀总膜厚为5nm；
在空穴阻挡层之上利用多源共蒸的方法，调节本发明电子传输材料III-C1～III-C216中的代表性化合物或对比材料III-ET-9、III-ET-46蒸镀速率为0.1nm/s，与III-ET-57蒸镀速率100％比例设定，蒸镀总膜厚为23nm；
在电子传输层(ETL)上真空蒸镀厚度为1nm的LiF作为电子注入层，厚度为80nm的Al层作为器件的阴极。
对由上述过程制备的有机电致发光器件进行如下性能测定：
在同样亮度下，使用Photo Research公司的PR 750型光辐射计ST-86LA型亮度计(北京师范大学光电仪器厂)及Keithley4200测试系统测定实施例III-1～III-9以及比较例III-1～III-3中制备得到的有机电致发光器件的驱动电压和电流效率。具体而言，以每秒0.1V的速率提升电压，测定当有机电致发光器件的亮度达到1000cd/m2时的电压即驱动电压，同时测出此时的电流密度；亮度与电流密度的比值即为电流效率；
实施例III-1
使用本发明化合物III-C1作为电子传输材料，按照上述有机电致发光器件的制备过程制备有机电致发光器件，并按照上述有机电致发光器件测试方法进行器件性能测试。
实施例III-2
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-C20。
实施例III-3
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-C22。
实施例III-4
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-C37。
实施例III-5
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化 合物III-C1替换为III-C55。
实施例III-6
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-C72。
实施例III-7
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-C120。
实施例III-8
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-C139。
实施例III-9
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-C189。
比较例III-1：
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-ET-9。
比较例III-2：
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-ET-46。
比较例III-3：
采用与实施例III-1相同的方法制备得到有机电致发光器件，不同在于，将化合物III-C1替换为III-ET-80。
本发明上述各个实施例所制备得到的有机电致发光器件的具体性能数据详见下表III-1：
表III-1：
Figure PCTCN2019084389-appb-000127
就实施例III-1至III-9与比较例III-1、III-2而言，在有机电致发光器件结构中其他材料相同的情况下，本发明涉及的化合物相比于比较例III-1中的电子传输材料III-ET-9，比较例III-2中的电子传输材料III-ET-46相比电压有所降低，效率有较大幅度提升。原因推测可能是本发明中新的喹唑啉并三氮唑缺电子基团引入到电子传输材料中提高了电子传输材料的电子注入和迁移能力。本发明涉及的化合物与比较例III-3中的电子传输材料III-ET-80比较，电压略低，效率略高，原因可能是喹唑啉并三氮唑较三嗪有更大的共轭结构和更大的缺电子性，因而使其具有相对更好的电子注入和迁移能力所致。
以上实验数据表明，本发明的新型有机材料作为有机电致发光器件的电子传输材料，是性能良好的有机发光功能材料，有望推广商业化应用。
器件实施例IV
为了方便比较本发明的发光材料的器件应用性能，使用下述所示的化合物IV-ET-46和IV-ET-58作为对比材料。
Figure PCTCN2019084389-appb-000128
(A)有机电致发光器件的制备
本实施例中有机电致发光器件制备过程如下：
将涂布了ITO透明导电层的玻璃板在商用清洗剂中超声处理，在去离子水中冲洗，在丙酮：乙醇混合溶剂中超声除油，在洁净环境下烘烤至完全除去水分，用紫外光和臭氧清洗，并用低能阳离子束轰击表面；
把上述带有阳极的玻璃基片置于真空腔内，抽真空至压强小于10 -5Pa，在上述阳极层膜上利用多源共蒸的方法，调节空穴传输材料IV-HT-28蒸镀速率为0.1nm/s，空穴注入材料IV-HI-2蒸镀速率7％比例设定，蒸镀总膜厚为10nm；
在空穴注入层之上真空蒸镀IV-HT-28作为器件的第一空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为40nm；
在第一空穴传输层之上真空蒸镀IV-HT-32作为器件的第二空穴传输层，蒸镀速率为0.1nm/s，蒸镀总膜厚为10nm；
在第二空穴传输层之上真空蒸镀器件的发光层，发光层包括主体材料和染料材料，利用多源共蒸的方法，调节主体材料IV-BFH-4蒸镀速率为0.1nm/s，染料IV-BFD-4蒸镀速率5％比例设定，蒸镀总膜厚为20nm；
在第发光层之上真空蒸镀IV-ET-17作为器件的空穴阻挡层，蒸镀速率为0.1nm/s，蒸镀总膜厚为5nm；
在空穴阻挡层之上利用多源共蒸的方法，调节本发明电子传输材料IV-C1～IV-C43或对比材料IV-ET46、IV-ET58蒸镀速率为0.1nm/s，与IV-ET-57蒸镀速率100％比例设定，蒸镀总膜厚为23nm；
在电子传输层(ETL)上真空蒸镀厚度为1nm的LiF作为电子注入层，厚度为80nm的Al层作为器件的阴极。
(B)有机电致发光器件的测试方法
对由上述过程制备的有机电致发光器件进行如下性能测定：
在同样亮度下，使用Photo Research公司的PR 750型光辐射计ST-86LA型亮度计(北京师范大学光电仪器厂)及Keithley4200测试系统测定实施例IV-1～IV-7以及比较例IV-1～IV-2中制备得到的有机电致发光器件的驱动电压和电流效率。具体而言，以每秒0.1V的速率提升电压，测定当有机电致发光器件的亮度达到1000cd/m 2时的电压即驱动电压，同时测出此时的电流密度；亮度与电流密度的比值即为电流效率；
实施例IV-1
使用本发明化合物IV-C7作为电子传输材料，按照上述有机电致发光器件的制备过程制备有机电致发光器件，并按照上述有机电致发光器件测试方法进行器件性能测试。
实施例IV-2
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，将化合物IV-C7替换为IV-C15。
实施例IV-3
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，将化合物IV-C7替换为IV-C28。
实施例IV-4
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，将化合物IV-C7替换为IV-C30。
实施例IV-5
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，将化合物IV-C7替换为IV-C40。
实施例IV-6
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，在发光层之上未蒸镀IV-ET-17作为器件的空穴阻挡层。
实施例IV-7
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，将化合物 IV-C7替换为IV-C32。
比较例IV-1：
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，将化合物IV-C7替换为IV-ET-46。
比较例IV-2：
采用与实施例IV-1相同的方法制备得到有机电致发光器件，不同在于，将化合物IV-C7替换为IV-ET-58。
如上制备的有机电致发光器件性能见表IV-1：
表IV-1
编号 化合物编号 要求亮度(cd/m 2) 电压(V) 电流效率(cd/A)
实施例IV-1 本发明材料IV-C7 1000.00 3.91 9.26
实施例IV-2 本发明材料IV-C15 1000.00 3.89 9.37
实施例IV-3 本发明材料IV-C28 1000.00 4.03 9.15
实施例IV-4 本发明材料IV-C30 1000.00 4.14 9.11
实施例IV-5 本发明材料IV-C40 1000.00 4.35 8.12
实施例IV-6 本发明材料IV-C7 1000.00 3.88 9.29
实施例IV-7 本发明材料IV-C32 1000.00 4.17 8.96
比较例IV-1 比较材料IV-ET-46 1000.00 4.49 7.30
比较例IV-2 比较材料IV-ET-58 1000.00 4.43 7.47
由表IV-1的结果可知，在有机电致发光器件结构中其他材料相同的情况下，与比较例IV-1和IV-2相比，使用了本发明化合物作为电子传输材料的实施例IV-1～IV-4的有机电致发光器件的电压较低，电流效率较高。据推测这是由于比较例IV-1中使用的电子传输材料不具备喹唑啉并三氮唑的母核结构，而比较例IV-2中使用的电子传输材料的Ar IV不含氮所致。
实施例IV-5中使用本发明化合物IV-C40作为电子传输材料，与比较例IV-1和IV-2相比，电致发光器件的电压较低，电流效率较高，但与实施例IV-1～IV-4相比，其性能较差。据推测这是由于实施例IV-5中使用的电子传输材料的Ar IV是喹唑啉基(含2个 氮)，而非实施例IV-1～IV-4中的苯基取代的三嗪基(含3个氮)所致，这说明将喹唑啉基取代三嗪基引入电子传输材料中不利于电子的注入和传输。
实施例IV-6表明不使用IV-ET-17作为空穴阻挡材料，与实施例IV-1中使用IV-ET-17作为空穴阻挡材料的情况相比，器件电压略低，电流效率略高。这表明本发明的化合物在不使用HBL材料的情况下，也能实现令人满意的性能。
虽然与比较例IV-1和IV-2相比，实施例IV-7的有机电致发光器件的电压较低，电流效率较高，但与实施例IV-1～IV-4相比，其性能略差。据推测这是由于实施例IV-7中使用的电子传输材料的Ar IV是苯基取代的吡啶基(含1个氮)，而非实施例IV-1～IV-4中的苯基取代的三嗪基(含3个氮)所致，这说明将苯基吡啶基取代三嗪基引入电子传输材料中不利于电子的注入和传输。
综上，使用了本发明限定的具备喹唑啉并三氮唑的母核结构且Ar IV至少含一个N的化合物的有机电致发光器件比使用不具备该特征的化合物的有机电致发光器件电压更低、电流效率更高。并且，在本发明限定的化合物中，Ar IV中包含三嗪结构的化合物效果最佳，使用了这类化合物的有机电致发光器件的性能最好。
以上实验数据表明，本发明的新型有机材料作为有机电致发光器件的电子传输材料，是性能良好的有机发光功能材料，有望推广商业化应用。
以上详细描述了本发明的优选实施方式，但是，本发明并不限于上述实施方式中的具体细节，在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，这些简单变型均属于本发明的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。此外，本发明的各种不同的实施方式之间也可以进行任意组合，只要其不违背本发明的思想，其同样应当视为本发明所公开的内容。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。

Claims (42)

  1. 一种式(A)所示的化合物，
    Figure PCTCN2019084389-appb-100001
    其中，
    L a为取代或未取代的C 6～C 30亚芳基，且
    R a为下述基团，
    Figure PCTCN2019084389-appb-100002
    其中，X a 1～X a 5彼此相同或不同，且X a 1～X a 5各自独立地表示氮原子或CR d，R d表示选自H、取代或未取代的C 1～C 12烷基、C1～C12烷氧基、卤素、氰基、硝基、羟基、硅烷基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基中的基团；R d的数量为2个以上时，多个R d彼此相同或不同，多个R d之间可以稠合，或者相邻的R d与相连接的苯环或杂芳基稠合形成取代或未取代的C 6～C 30芳基或杂芳基，*表示与L a的连接位点；
    或
    L a为单键，且
    R a为H、取代或未取代的C6～C30芳基或者取代或未取代的C3～C30杂芳基，所述取代基选自C1～C10烷基、C6～C14芳基或者C3～C14杂芳基；
    L b为单键、取代或未取代的C6～C30亚芳基或者取代或未取代的C3～C30亚杂芳基；
    R b选自以下的基团：H、氰基、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、 取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基，或下式所示的结构：
    Figure PCTCN2019084389-appb-100003
    X b 1～X b 6为C、CR e或者N，且至少一个X为N，R e为H、C6～C30芳基或者含1～3个杂原子的C3～C30杂芳基，若存在多个R e时，多个R e彼此相同或不同；
    R c选自以下的基团：H、氰基、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、取代或未取代的C 6～C 60芳基、取代或未取代的C 3～C 50杂芳基，
    R b和R c任选各自独立地与相连接的苯环稠合形成C9～C30芳基或杂芳基，所形成的芳基或杂芳基任选地被0、1、2、3、4或5个各自独立地选自取代或未取代的C1～C12烷基、卤素、氰基、硝基、羟基、硅烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的取代基所取代；
    n为1～5的整数，当n≥2时，多个R a彼此相同或不同，
    m为0～4的整数，当m≥2时，多个R c彼此相同或不同，
    当上述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C1-C12的烷基或环烷基、C2-C10烯基、C1-C6的烷氧基或硫代烷氧基基团、C6-C30芳基氨基、C3-C30杂芳基氨基、C6-C30芳基、C3-C30杂芳基中的一种。
  2. 根据权利要求1所述的化合物，其中，X a 1～X a 5各自独立地选自C、CH或N，且至少一个为N。
  3. 根据权利要求1所述的化合物，其中，X a 1和X a 5各自独立地表示氮原子或CH，X a 2～X a 4各自独立地表示氮原子或CR d。
  4. 根据权利要求1所述的化合物，其中，芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C 1～C 12烷基、C 6～C 30芳基、C 3～C 30杂芳基中的取代基所取代。
  5. 根据权利要求1所述的化合物，其中，当所述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C1-C10的烷基或环烷基、C2-C10烯基、C1-C6的烷氧基或硫代烷氧基基团、C6-C30芳基氨基、C3-C30杂芳基氨基、C6-C30的单环芳烃或稠环芳烃基团、C3-C30的单环杂芳烃或稠环杂芳烃基团中的一种。
  6. 根据权利要求1所述的化合物，其中化合物由如下通式(I)表示，
    Figure PCTCN2019084389-appb-100004
    其中，
    L I为取代或未取代的C 6～C 18亚芳基，
    R I 1为下述基团，
    Figure PCTCN2019084389-appb-100005
    其中，X I 1～X I 5彼此相同或不同，且X I 1和X I 5各自独立地表示氮原子或CH，X I 2～X I 4各自独立地表示氮原子或CR I 4，R I 4表示选自H、取代或未取代的C 1～C 12烷基、取代或未取代的C 6～C 30芳基、取代或未取代的C 3～C 30杂芳基中基团；R I 4的数量为2个以上时，多个R I 4彼此相同或不同，或者相邻的R I 4与相连接的苯环稠合形成C 6～C 30芳基或杂芳基，*表示与L I的连接位点，
    R I 2选自以下的基团：H、取代或未取代的C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、取代或未取代的C 6～C 30芳基氨基、取代或未取代的C 3～C 30杂芳基氨基、取代或未取代的C 6～C 30芳基、取代或未取代的C 3～C 30杂芳基，
    R I 3选自以下的基团：C 1～C 12烷基、C 1～C 12烷氧基、羟基、氨基、C 6～C 30芳基氨基、C 3～C 30杂芳基氨基、C 6～C 30芳基、C 3～C 30杂芳基，
    n1为1～5的整数，
    m1为0～4的整数，
    上述的芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C 1～C 12烷基、C 6～C 30芳基、C 3～C 30杂芳基中的取代基所取代。
  7. 根据权利要求6所述的化合物，其特征在于，L I为取代或未取代的亚苯基、亚萘基、亚菲基。
  8. 根据权利要求6所述的化合物，其特征在于，R I 1选自三嗪基、嘧啶基、喹唑啉基、吡啶基、吡嗪基、异喹啉基、1,5-吡啶并吡啶基、喹啉基、噌啉基、喹噁啉基，这些基团任选被一个或多个选自以下的基团取代：乙基、叔丁基、苯基、萘基、联苯 基、吡啶基、苯基吡啶基、吡啶基苯基。
  9. 根据权利要求6所述的化合物，其特征在于，R I 2选自以下基团
    Figure PCTCN2019084389-appb-100006
    *表示与母核的键合位置，“—”划过的环结构的表达方式，表示连接位点位于该环结构上任意能够成键的位置。
  10. 根据权利要求6所述的化合物，其特征在于，所述化合物由下述通式(I-1)～(I-3)中的任一者表示，
    Figure PCTCN2019084389-appb-100007
    在式(I-1)～(I-3)中，R I 1和R I 2的含义与通式(Ⅰ)中的含义相同。
  11. 根据权利要求1或6所述的化合物，其特征在于，所述化合物为选自下述I-C1～I-C114所示结构的化合物。
    Figure PCTCN2019084389-appb-100008
    Figure PCTCN2019084389-appb-100009
    Figure PCTCN2019084389-appb-100010
    Figure PCTCN2019084389-appb-100011
    Figure PCTCN2019084389-appb-100012
    Figure PCTCN2019084389-appb-100013
  12. 根据权利要求1所述的化合物，所述化合物为通式(II)所示的化合物，
    Figure PCTCN2019084389-appb-100014
    其中，
    L II为取代或未取代的C6～C18亚芳基，
    R II 1为下述基团，
    Figure PCTCN2019084389-appb-100015
    其中，X II 1～X II 5彼此相同或不同，且X II 1和X II 5各自独立地表示氮原子或CH，X II 2～X II 4各自独立地表示氮原子或CR II 4，R II 4表示选自H、氰基、取代或未取代的C1～C12烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中基团；R II 4的数量为2个以上时，多个R II 4彼此相同或不同，或者相邻的R II 4与相连接的苯环稠合形成C9～C30芳基或杂芳基，*表示与L II的连接位点，
    其中，至少一个R II 1中的X II 1～X II 5中至少一个为N；
    R II 2选自以下的基团：H、氰基、取代或未取代的C1～C12烷基、C1～C12烷氧基、羟基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基，
    R II 3选自以下的基团：C1～C12烷基、C1～C12烷氧基、羟基、氨基、C6～C30芳基氨基、C3～C30杂芳基氨基、C6～C30芳基、C3～C30杂芳基，
    R II 2和R II 3任选各自独立地与相连接的苯环稠合形成C9～C30芳基或杂芳基，所形成的芳基或杂芳基任选地被0、1、2、3、4或5个各自独立地选自取代或未取代的C1～C12烷基、卤素、氰基、硝基、羟基、硅烷基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的取代基所取代；
    n2为1～5的整数，
    m2为0～4的整数，
    上述的芳基或杂芳基任选地被0、1、2、3或4个各自独立地选自C1～C12烷基、C6～C30芳基、C3～C30杂芳基中的取代基所取代。
  13. 根据权利要求12所述的化合物，其特征在于，至少1个R II 1为取代或未取代的三嗪基、吡嗪基、异喹啉基、1,5-吡啶并吡啶基或喹噁啉基，优选至少1个R II 1为取代或未取代的三嗪基或吡嗪基，优选至少1个R II 1为取代或未取代的三嗪基。
  14. 根据权利要求13所述的化合物，其特征在于，所述三嗪基、吡嗪基、异喹啉基、1,5-吡啶并吡啶基或喹噁啉基任选被一个或多个选自以下的基团取代：苯基、萘基、联苯基、吡啶基、苯基吡啶基、吡啶基苯基。
  15. 根据权利要求12所述的化合物，其特征在于，R II 2选自H、氰基、取代或未取代的C1～C12烷基、C1～C12烷氧基、羟基、氨基、取代或未取代的C6～C30芳 基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的联苯基、取代或未取代的C15～C30芳基、取代或未取代的C12～C30杂芳基中的一种，优选选自H、取代或未取代的C1～C12烷基、取代或未取代的联苯基、取代或未取代的C15～C30芳基、取代或未取代的C12～C30杂芳基中的一种，更优选选自取代或未取代的以下基团：
    Figure PCTCN2019084389-appb-100016
    其中，*表示与母核的键合位置，“—”划过的环结构的表达方式，表示连接位点位于该环结构上任意能够成键的位置，
    最优选选自取代或未取代的下述基团：芴基、联苯基、三联苯基中的一种。
  16. 根据权利要求12～15中任一项所述的化合物，其特征在于，L II为取代或未取代的下述基团：亚苯基、亚萘基、亚菲基中的一种。
  17. 根据权利要求12～15中任一项所述的化合物，其特征在于，n2为1或2。
  18. 根据权利要求17所述的化合物，其特征在于，所述通式(II)选自下述式(II-1)、(II-2)或(II-3)的通式化合物：
    Figure PCTCN2019084389-appb-100017
    其中，a2为1或2，
    R II 4选自氢、C1～C12烷基、C1～C12烷氧基、卤素、氰基、硝基、羟基、硅烷 基、氨基、取代或未取代的C6～C30芳基氨基、取代或未取代的C3～C30杂芳基氨基、取代或未取代的C6～C30芳基、取代或未取代的C3～C30杂芳基中的一种；
    R II 1～R II 3、m2与权利要求12中的定义相同。
  19. 根据权利要求1或12或13所述的化合物，其特征在于，所述化合物选自下述II-C1～II-C34所示结构的化合物：
    Figure PCTCN2019084389-appb-100018
    Figure PCTCN2019084389-appb-100019
  20. 根据权利要求1所述的化合物，所述化合物如下式(III)所示：
    Figure PCTCN2019084389-appb-100020
    式(III)中，A III如下式(III-a)所示：
    Figure PCTCN2019084389-appb-100021
    上述式(III)和式(III-a)中：
    Ar III选自取代或未取代的下述基团：C6-C60的芳基或者C3-C50的杂芳基；
    R III 1-R III 4各自独立的选自下述基团中的一种：H、氰基、取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基；
    L III选自取代或未取代的C6-C30的亚芳基；
    X III 1-X III 5各自独立地选自C、CH或N，且至少一个为N；
    n3为0-4的整数，R III 7选自下述基团中的一种：取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基，当R III 7为多个时彼此可以相同或不同，且多个R III 7之间可以稠合连接；
    当上述基团存在取代基时，所述取代基团分别独立选自卤素、氰基、硝基、C1-C10的烷基或环烷基、C2-C10烯基、C1-C6的烷氧基或硫代烷氧基基团、C6-C30芳基氨基、C3-C30杂芳基氨基、C6-C30的单环芳烃或稠环芳烃基团、C3-C30的单环杂芳烃或稠环杂芳烃基团中的一种。
  21. 根据权利要求20所述的通式化合物，如下式(III-2)所示：
    Figure PCTCN2019084389-appb-100022
    式(III-2)中，A III如下式(III-a)所示：
    Figure PCTCN2019084389-appb-100023
    Ar III、R III 1-R III 4、R III 7的定义均与在权利要求20中的定义相同；
    X III 1-X III 5各自独立的选自C、CH或N，且至少一个为N，优选X III 1-X III 5中的两个或三个为N；
    n3为0-4的整数，优选n3为0-3的整数。
  22. 根据权利要求20所述的通式化合物，如下式(III-2-1)或式(III-2-2)所示：
    Figure PCTCN2019084389-appb-100024
    其中，A III、Ar III、R III 1-R III 4的定义均与在权利要求20中的定义相同。
  23. 根据权利要求20所述的通式化合物，如下式(III-3-1)至式(III-3-4)所示：
    Figure PCTCN2019084389-appb-100025
    其中，A III、Ar III、R III 1-R III 4的定义均与在权利要求20中的定义相同。
  24. 根据权利要求20-23中任一所述的通式化合物，其中，通式(III)、式(III-2)、式(III-2-1)至(III-2-2)、式(III-3-1)至(III-3-4)中的基团A III如下式(III-a-1)或(III-a-2)所示：
    Figure PCTCN2019084389-appb-100026
    其中，m3为0-3的整数，R III 7的定义与权利要求20中的定义相同。
  25. 根据权利要求24所述的通式化合物，如下式(III-4-1)或式(III-4-2)所示：
    Figure PCTCN2019084389-appb-100027
    其中，m3为0-3的整数，A III、Ar III、R III 1-R III 4、R III 7的定义均与在权利要求20和权利要求24中的定义相同。
  26. 根据权利要求20-23中任一所述的通式化合物，其中，通式(III)、式(III-2)、式(III-2-1)至(III-2-2)、式(III-3-1)至(III-3-4)中的基团A III如下式(III-a-11)或(III-a-12)所示：
    Figure PCTCN2019084389-appb-100028
    其中，R III 5、R III 6各自独立的选自下述基团中的一种：H、氰基、取代或未取代的C1-C12的烷基、取代或未取代的C6-C60的芳基、取代或未取代的C3-C50的杂芳基。
  27. 根据权利要求26所述的通式化合物，如下式(III-5-1)或式(III-5-2)所示：
    Figure PCTCN2019084389-appb-100029
    其中，A III、Ar III、R III 1-R III 4、R III 5-R III 6的定义均与在权利要求20和权利要求26中的定义相同。
  28. 根据权利要求20所述的通式化合物，其中：
    所述的R III 1-R III 4各自独立地选自H，或者选自取代或未取代的下述基团：甲基、乙基、正丙基、异丙基、正丁基、异丁基、仲丁基、叔丁基、2-甲基丁基、正戊基、仲 戊基、环戊基、新戊基、正己基、环己基、新己基、正庚基、环庚基、正辛基、环辛基、2-乙基己基、三氟甲基、五氟乙基、2,2,2-三氟乙基、苯基、萘基、蒽基、苯并蒽基、菲基、苯并菲基、芘基、窟基、茈基、荧蒽基、并四苯基、并五苯基、苯并芘基、联苯基、偶苯基、三联苯基、三聚苯基、四联苯基、芴基、螺二芴基、二氢菲基、二氢芘基、四氢芘基、顺式或反式茚并芴基、三聚茚基、异三聚茚基、螺三聚茚基、螺异三聚茚基、呋喃基、苯并呋喃基、异苯并呋喃基、二苯并呋喃基、噻吩基、苯并噻吩基、异苯并噻吩基、二苯并噻吩基、吡咯基、异吲哚基、咔唑基、、茚并咔唑基、吡啶基、喹啉基、异喹啉基、吖啶基、菲啶基、苯并-5,6-喹啉基、苯并-6,7-喹啉基、苯并-7,8-喹啉基、吩噻嗪基、吩嗪基、吡唑基、吲唑基、咪唑基、苯并咪唑基、萘并咪唑基、菲并咪唑基、吡啶并咪唑基、吡嗪并咪唑基、喹喔啉并咪唑基、嗯唑基、苯并嗯唑基、萘并嗯唑基、蒽并嗯唑基、菲并嗯唑基、1，2-噻唑基、1，3-噻唑基、苯并噻唑基、哒嗪基、苯并哒嗪基、嘧啶基、苯并嘧啶基、喹喔啉基、1，5-二氮杂蒽基、2,7-二氮杂芘基、2,3-二氮杂芘基、1,6-二氮杂芘基、1,8-二氮杂芘基、4,5-二氮杂芘基、4,5,9,10-四氮杂茈基、吡嗪基、吩嗪基、吩嗪基、吩噻嗪基、萘啶基、氮杂咔唑基、苯并咔啉基、菲咯啉基、1,2,3-三唑基、1,2,4-三唑基、苯并三唑基、1,2,3-噁二唑基、1,2,4-嗯二唑基、1,2,5_嗯二唑基、1,2,3-噻二唑基、1,2,4-噻二唑基、1,2,5-噻二唑基、1,3,4-噻二唑基、1,3,5-三嗪基、1,2,4-三嗪基、1,2,3-三嗪基、四唑基、1,2,4,5-四嗪基、1,2,3,4-四嗪基、1,2,3,5-四嗪基、嘌呤基、蝶啶基、吲嗪基、苯并噻二唑基中的一种，或选自以上两种基团的组合；
    所述的Ar III选自取代或未取代的下述基团：苯基、萘基、蒽基、苯并蒽基、菲基、苯并菲基、芘基、窟基、茈基、荧蒽基、并四苯基、并五苯基、苯并芘基、联苯基、偶苯基、三联苯基、三聚苯基、四联苯基、芴基、螺二芴基、二氢菲基、二氢芘基、四氢芘基、顺式或反式茚并芴基、三聚茚基、异三聚茚基、螺三聚茚基、螺异三聚茚基、呋喃基、苯并呋喃基、异苯并呋喃基、二苯并呋喃基、噻吩基、苯并噻吩基、异苯并噻吩基、二苯并噻吩基、吡咯基、异吲哚基、咔唑基、、茚并咔唑基、吡啶基、喹啉基、异喹啉基、吖啶基、菲啶基、苯并-5,6-喹啉基、苯并-6,7-喹啉基、苯并-7,8-喹啉基、吩噻嗪基、吩嗪基、吡唑基、吲唑基、咪唑基、苯并咪唑基、萘并咪唑基、菲并咪唑基、吡啶并咪唑基、吡嗪并咪唑基、喹喔啉并咪唑基、嗯唑基、苯并嗯唑基、萘并嗯唑基、蒽并嗯唑基、菲并嗯唑基、1，2-噻唑基、1，3-噻唑基、苯并噻唑基、哒嗪基、苯并哒嗪基、嘧啶基、苯并嘧啶基、喹喔啉基、1，5-二氮杂蒽基、2,7-二氮 杂芘基、2,3-二氮杂芘基、1,6-二氮杂芘基、1,8-二氮杂芘基、4,5-二氮杂芘基、4,5,9,10-四氮杂茈基、吡嗪基、吩嗪基、吩嗪基、吩噻嗪基、萘啶基、氮杂咔唑基、苯并咔啉基、菲咯啉基、1,2,3-三唑基、1,2,4-三唑基、苯并三唑基、1,2,3-噁二唑基、1,2,4-嗯二唑基、1,2,5_嗯二唑基、1,2,3-噻二唑基、1,2,4-噻二唑基、1,2,5-噻二唑基、1,3,4-噻二唑基、1,3,5-三嗪基、1,2,4-三嗪基、1,2,3-三嗪基、四唑基、1,2,4,5-四嗪基、1,2,3,4-四嗪基、1,2,3,5-四嗪基、嘌呤基、蝶啶基、吲嗪基、苯并噻二唑基中的一种，或选自以上两种基团的组合。
  29. 根据权利要求1或20所述的通式化合物，选自下述具体结构化合物：
    Figure PCTCN2019084389-appb-100030
    Figure PCTCN2019084389-appb-100031
    Figure PCTCN2019084389-appb-100032
    Figure PCTCN2019084389-appb-100033
    Figure PCTCN2019084389-appb-100034
    Figure PCTCN2019084389-appb-100035
    Figure PCTCN2019084389-appb-100036
    Figure PCTCN2019084389-appb-100037
    Figure PCTCN2019084389-appb-100038
    Figure PCTCN2019084389-appb-100039
    Figure PCTCN2019084389-appb-100040
    Figure PCTCN2019084389-appb-100041
  30. 根据权利要求1所述的化合物，所述化合物具有如式(IV)所示的结构式：
    Figure PCTCN2019084389-appb-100042
    其中，L IV为单键、C6～C30的亚芳基或者C3～C30的亚杂芳基；m4为1～4的整数；R IV 1和R IV 2各自独立地为H、取代或未取代的C6～C30的芳基或者取代或未取代的C3～C30的杂芳基，所述取代基选自C1～C10的烷基、C6～C14的亚芳基或者C3～C14的亚杂芳基；Ar IV为以下结构：
    Figure PCTCN2019084389-appb-100043
    X IV 1～X IV 6为C、CR IV 3或者N，且至少一个X IV为N，R IV 3为H、C6～C30的芳基或者含1～3个杂原子的C3～C30的杂芳基，若存在多个R IV 3时，多个R IV 3彼此相同或不同。
  31. 根据权利要求30所述的化合物，其中，-L IV-Ar IV不为吡啶基、苯基吡啶基或吡啶基苯基。
  32. 根据权利要求30所述的化合物，其中，所述结构式(IV)选自结构式(IV-1)～(IV-3)中的任一种：
    Figure PCTCN2019084389-appb-100044
    n4为1～4的整数。
  33. 根据权利要求32所述的化合物，其具有如结构式(IV-3)所示的结构。
  34. 根据权利要求30所述的化合物，其中，L IV为取代或未取代的亚苯基，所述取代基选自苯基、萘基、菲基、氰基苯基中的一种。
  35. 根据权利要求30所述的化合物，其中，R IV 1为苯基、萘基、菲基、联苯基或9,9-二甲基芴基。
  36. 根据权利要求30所述的化合物，其中，R IV 2为H或苯基。
  37. 根据权利要求30所述的化合物，其中，R IV 3选自苯基、萘基或联苯基。
  38. 根据权利要求37所述的化合物，其中，Ar IV为二取代的嘧啶基、喹唑啉基或三嗪基。
  39. 根据权利要求1或30～38任一项所述的化合物，其选自下述IV-C1～IV-C50所示的化合物：
    Figure PCTCN2019084389-appb-100045
    Figure PCTCN2019084389-appb-100046
    Figure PCTCN2019084389-appb-100047
  40. 根据权利要求1～39中任一项所述的化合物，其用作电子传输材料。
  41. 一种有机电致发光器件，包括第一电极、第二电极和插入在所述第一电极和第二电极之间的有机层，其特征在于，所述有机层中含有权利要求1～39中任一项所述的化合物。
  42. 根据权利要求41所述的有机电致发光器件，其特征在于，含有所述化合物的有机层为选自发光层、电子注入层、电子传输层、空穴注入层、空穴阻挡层和空穴传输层中的一层或多层。
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