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CN-121974895-A - Aromatic amine derivative and organic electroluminescent device thereof

CN121974895ACN 121974895 ACN121974895 ACN 121974895ACN-121974895-A

Abstract

The invention provides an aromatic amine derivative and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The technical problem to be solved by the invention is that the mobility of the hole transport material is low, the refractive index of the covering layer material is low, so that the luminous efficiency of the organic electroluminescent device is low and the service life is reduced. The compound has higher hole mobility and refractive index, good thermal stability and good film forming property, can obviously improve the luminous efficiency and service life of a device, optimizes the light extraction effect and blocks impurities. The organic electroluminescent device can be widely applied to the fields of panel display, illumination light sources, flexible OLED, electronic paper, organic solar cells, organic photoreceptors or organic thin film transistors, indication boards, signal lamps and the like.

Inventors

  • GUO JIANHUA
  • DONG XIUQIN
  • HAN CHUNXUE

Assignees

  • 长春海谱润斯科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260122

Claims (10)

  1. 1. An aromatic amine derivative, which is characterized by having a molecular structure as shown in formula 1: wherein Ar is selected from formula 1-a or formula 1-b: The ring A, the ring B, the ring C and the ring D are independently selected from any one of substituted or unsubstituted C6-C30 aromatic ring, substituted or unsubstituted C2-C30 heteroaromatic ring, substituted or unsubstituted C3-C8 alicyclic ring and condensed ring group of C6-C30 aromatic ring; the X 0 、X 1 、X 2 is independently selected from O, S or NR c ; Ar 1 is selected from any one of the following groups: The R 1 、R 1 ' is independently selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring, or two or more adjacent R 1 are connected with each other to form a substituted or unsubstituted ring; The n 1 is selected from 0,1, 2, 3 or 4, and the n 2 is selected from 0,1, 2, 3, 4, 5 or 6; The z are the same or different from each other and are selected from CH or N, and when z is connected with L 2 , the z is selected from C; The X is selected from O, S, NR d 、CR e R e 'or SiR p R p '; the Y is selected from single bond, O, S, NR d '、CR s R s 'or SiR t R t '; The R c 、R d 、R d ' is independently selected from any one of hydrogen, deuterium, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring groups, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring groups; The R a 、R e 、R e '、R p 、R p '、R s 、R s '、R t 、R t ' is independently selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted alkyl of C1 to C12, substituted or unsubstituted silyl, substituted or unsubstituted cycloalkyl of C3 to C12, substituted or unsubstituted alkenyl of C2 to C12, substituted or unsubstituted cycloalkenyl of C3 to C12, substituted or unsubstituted aryl of C6 to C30, substituted or unsubstituted heteroaryl of C2 to C30, substituted or unsubstituted fused ring of alicyclic of C3 to C8 and aromatic of C6 to C30, substituted or unsubstituted fused ring of alicyclic of C3 to C8 and heteroaromatic of C2 to C30, or between adjacent R e and R e ', between adjacent R p and R p ', between adjacent R s and R s ', between adjacent R t and R t ', between adjacent two or more of R e and R e ' are formed as a link between adjacent R e 、R e and R e ; The R b groups are identical or different from each other and are selected from hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-tert-butylsilyl, triphenylsilyl, cyclopropylalkyl, cyclobutylalkyl, cyclopentylalkyl, cyclohexenyl, cycloheptyl, cyclooctalkyl, cyclopentenyl, cyclohexenyl, adamantyl, norbornyl, camphenealkyl, phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, phenanthryl, pyrenyl, triphenylenyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, naphthyridinyl any one or more of benzocyclopropane, benzocyclobutane, benzocyclopentane, benzocyclohexene, benzocycloheptane, benzocyclooctane, benzocyclopropene, benzocyclobutene, benzocyclopentene, benzocyclohexene, benzocycloheptene, benzocyclooctene, benzoxazolyl, benzothiazolyl, benzofuranyl, benzothienyl, benzimidazolyl, indolyl, carbazolyl, 9-phenylcarbazolyl, dibenzofuranyl, dibenzothiophenyl, 9-dimethylfluorenyl, 9-diphenylfluorenyl, 9' -spirobifluorenyl, spirofluorene oxaanthracenyl, spirofluorene thiaanthracenyl, spirofluorene azaanthracenyl, or two or more adjacent R b are connected with each other to form a substituted or unsubstituted ring; said m 2 is selected from 0, 1,2, 3, or 4; And L 1 is selected from a single bond or any one of the following groups: The v is selected from CH or N; The R 4 are the same or different from each other and are selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring groups, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring groups; the ring G is selected from substituted or unsubstituted C3-C8 alicyclic rings; The T 3 is selected from O, S, NR i or CR q R q '; The T 4 is independently selected from O, S or NR i '; The R q 、R q ' is independently selected from any one of a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted C2-C12 alkenyl group, a substituted or unsubstituted C3-C12 cycloalkenyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, a substituted or unsubstituted C3-C8 alicyclic ring, and a C6-C30 aromatic ring condensed ring group, a substituted or unsubstituted C3-C8 alicyclic ring, and a C2-C30 heteroaromatic ring condensed ring group; The R i 、R i ' is independently selected from any one of hydrogen, deuterium, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring groups, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring groups; the q is selected from 1, 2, 3 or 4; The c 1 is selected from 0, 1,2, 3 or 4, the c 2 is selected from 0, 1,2, 3, 4, 5 or 6, the c 3 is selected from 0, 1,2, 3, 4, 5, 6, 7 or 8, and the c 5 is selected from 0, 1,2 or 3; The L, L 2 is independently selected from any one or combination of single bond, substituted or unsubstituted arylene of C6-C30, substituted or unsubstituted heteroarylene of C2-C30, fused ring-sub group of substituted or unsubstituted alicyclic ring of C3-C8 and aromatic ring of C6-C30, and fused ring-sub group of substituted or unsubstituted alicyclic ring of C3-C8 and heteroaromatic ring of C2-C30.
  2. 2. An aromatic amine derivative according to claim 1, wherein Ar is selected from any one of the following groups: The radicals R c , which are identical or different from one another, are selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-tert-butylsilyl, triphenylsilyl, cyclopropylalkyl, cyclobutylalkyl, cyclopentylalkyl, cyclohexenyl, cycloheptyl, cyclooctyl, cyclopentenyl, cyclohexenyl, adamantyl, norbornyl, camphene, phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, phenanthryl, pyrenyl, triphenylyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, naphthyridinyl, benzocyclopropenyl, benzocyclobutenyl, benzocyclopentenyl, benzocyclohexenyl, benzocycloheptyl, benzocyclooctyl, benzocyclopropenyl, benzocycloalkenyl, benzocyclopentenyl, benzocyclohexenyl, benzofluorenyl, benzo9-dibenzofluorenyl, 9-methyl-9-substituted dibenzofluorenyl, 9-benzylfluorenyl, 9-dibenzofluorenyl, 9-substituted dibenzoyl, 9-methylbenzenyl, 9-dibenzofluorenyl, 9-methyl-p-dibenzoyl, 9-phenylmethyl-9-substituted-dibenzoyl, phenylmethyl-9-dibenzoyl-p-benzofluorenyl, and the radicals which are substituted by, any one or more of deuterated isopropyl, deuterated tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, adamantyl, norbornyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-tert-butylsilyl, triphenylsilyl, phenyl, biphenyl, terphenyl, tolyl, pentadeuterated phenyl, naphthyl, benzocyclopentyl, benzocyclohexenyl.
  3. 3. An aromatic amine derivative according to claim 1, wherein ring a, ring B, ring C, ring D are independently selected from any one of the following groups: The said Is a parallel ring position; s are identical or different from each other and are selected from CH or N; The ring E is selected from substituted or unsubstituted C3-C8 alicyclic rings; the Y is selected from O, S, NR f or CR g R g '; The Y a 、Y b is independently selected from O, S or NR f '; The Y c 、Y d is independently selected from O, S, NR f ″ or CR h R h '; the R is independently selected from any one of hydrogen, deuterium, cyano, fluorine, nitro, trifluoromethyl, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic ring and C6-C30 condensed ring group of aromatic ring, substituted or unsubstituted C3-C8 alicyclic ring and C2-C30 condensed ring group of heteroaromatic ring, or two or more adjacent R groups can be connected with each other to form a substituted or unsubstituted ring; The R f 、R f '、R f '' is independently selected from any one of hydrogen, deuterium, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring groups, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring groups; The R g 、R g '、R h 、R h 'is independently selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring, or adjacent R g and R g ' are connected with each other to form a substituted or unsubstituted ring; The k 1 is selected from 0, 1, 2, 3 or 4, the k 2 is selected from 0, 1, 2, 3, 4, 5 or 6, the k 3 is selected from 0, 1, 2, 3, 4, 5, 6, 7 or 8, the k 5 is selected from 0, 1, 2 or 3, and the k 11 is selected from 0, 1 or 2.
  4. 4. An aromatic amine derivative according to claim 1, wherein said aromatic amine is selected from the group consisting of Any one selected from the following groups: The R a groups are identical or different from each other and are selected from hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-tert-butylsilyl, triphenylsilyl, cyclopropylalkyl, cyclobutylalkyl, cyclopentylalkyl, cyclohexenyl, cycloheptyl, cyclooctalkyl, cyclopentenyl, cyclohexenyl, adamantyl, norbornyl, camphenealkyl, phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, phenanthryl, pyrenyl, triphenylenyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, naphthyridinyl, benzocyclopropylalkyl any one or more of benzocyclobutanyl, benzocyclopentanyl, benzocyclohexenyl, benzocycloheptanyl, benzocyclooctanyl, benzocyclopropenyl, benzocyclobutenyl, benzocyclopentenyl, benzocyclohexenyl, benzocycloheptenyl, benzocyclooctenyl, benzoxazolyl, benzothiazolyl, benzofuranyl, benzothienyl, benzimidazolyl, indolyl, carbazolyl, 9-phenylcarbazolyl, dibenzofuranyl, dibenzothiophenyl, 9-dimethylfluorenyl, 9-diphenylfluorenyl, 9-methyl-9-phenylfluorenyl, 9' -spirobifluorenyl, spirofluorene oxaanthracenyl, spirofluorene azaanthracenyl, spiroanthracene fluorenyl, or two or more adjacent R a are connected with each other to form a substituted or unsubstituted ring, wherein the substituent of "substituted or unsubstituted" is selected from any one or more of deuterium, cyano, fluoro, trifluoromethyl, methyl, ethyl, n-propyl, isopropyl, n-butyl, t-butyl, deuterated methyl, deuterated isopropyl, deuterated t-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, adamantyl, norbornyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-t-butylsilyl, triphenylsilyl, phenyl, biphenyl, terphenyl, tolyl, pentadeuterated phenyl, naphthyl, benzocyclopentyl, benzocyclohexenyl; The R d 、R d 'is independently selected from hydrogen, deuterium, substituted or unsubstituted following groups: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-tert-butylsilyl, triphenylsilyl, cyclopropylalkyl, cyclobutylalkyl, cyclopentylalkyl, cyclohexenyl, cycloheptyl, cyclooctalkyl, cyclopentenyl, cyclohexenyl, adamantyl, norbornyl, camphenealkyl, phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, phenanthryl, pyrenyl, triphenylenyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, naphthyridinyl, benzocyclopropylalkyl any one or more of benzocyclobutanyl, benzocyclopentanyl, benzocyclohexenyl, benzocycloheptanyl, benzocyclooctanyl, benzocyclopropenyl, benzocyclobutenyl, benzocyclopentenyl, benzocyclohexenyl, benzocycloheptenyl, benzocyclooctenyl, benzoxazolyl, benzothiazolyl, benzofuranyl, benzothienyl, benzimidazolyl, indolyl, carbazolyl, 9-phenylcarbazolyl, dibenzofuranyl, dibenzothiophenyl, 9-dimethylfluorenyl, 9-diphenylfluorenyl, 9-methyl-9-phenylfluorenyl, 9' -spirobifluorenyl, spirofluorene oxaanthracenyl, spirofluorene azaanthracenyl, spiroanthracene fluorenyl, wherein the substituents of the "substituted or unsubstituted" are selected from deuterium, methyl, ethyl, n-propyl, isopropyl, n-butyl, t-butyl, deuterated methyl, deuterated isopropyl, any one or more of deuterated tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, adamantyl, norbornyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-tert-butylsilyl, triphenylsilyl, phenyl, biphenyl, terphenyl, tolyl, pentadeuterated phenyl, naphthyl, benzocyclopentyl, benzocyclohexenyl; The R e 、R e '、R p 、R p '、R s 、R s '、R t 、R t 'is independently selected from hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, trimethylsilyl, triethylsilyl, triisopropylsilyl, tri-tert-butylsilyl, triphenylsilyl, cyclopropylalkyl, cyclobutylalkyl, cyclopentylalkyl, cyclohexenyl, cycloheptyl, cyclooctalkyl, cyclopentenyl, cyclohexenyl, adamantyl, norbornyl, camphenealkyl, phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, phenanthryl, pyrenyl, triphenylenyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, naphthyridinyl, benzocyclopropylalkyl any one or more of benzocyclobutanyl, benzocyclopentanyl, benzocyclohexenyl, benzocycloheptanyl, benzocyclooctanyl, benzocyclopropenyl, benzocyclobutenyl, benzocyclopentenyl, benzocyclohexenyl, benzocycloheptenyl, benzocyclooctenyl, benzoxazolyl, benzothiazolyl, benzofuranyl, benzothienyl, benzimidazolyl, indolyl, carbazolyl, 9-phenylcarbazolyl, dibenzofuranyl, dibenzothiophenyl, 9-dimethylfluorenyl, 9-diphenylfluorenyl, 9-methyl-9-phenylfluorenyl, 9' -spirobifluorenyl, spirofluorene oxaanthracenyl, spirofluorene azaanthracenyl, spiroanthracene fluorenyl, or between adjacent R e and R e ', between adjacent R p and R p ', between adjacent R s and R s Adjacent R t and R t ' are connected with each other to form a substituted or unsubstituted ring; The definition of R b is the same as that in the formula 1; The m 1 is selected from 0, 1,2 or 3, the m 2 is selected from 0, 1,2, 3 or 4, the m 3 is selected from 0, 1 or 2, and the m 4 is selected from 0, 1,2, 3, 4, 5 or 6.
  5. 5. An aromatic amine derivative according to claim 1, wherein L and L 2 are the same or different from each other and are selected from a single bond or any one or combination of the following groups: said t is selected from CH or N; R 2 is the same or different from each other and is selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring, or two or more adjacent R 2 are connected with each other to form a substituted or unsubstituted ring; the ring F is selected from substituted or unsubstituted C3-C8 alicyclic rings; the T 1 is selected from O, S, NR n or CR m R m '; The T 2 is independently selected from O, S or NR n '; The R m 、R m 'is independently selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring, or adjacent R m and R m ' are connected with each other to form a substituted or unsubstituted ring; The R n 、R n ' is independently selected from any one of hydrogen, deuterium, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring groups, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring groups; said p is selected from 1, 2, 3 or 4; The t 1 is selected from 0, 1,2, 3 or 4, the t 2 is selected from 0, 1,2, 3, 4, 5 or 6, the t 3 is selected from 0, 1,2, 3, 4, 5, 6, 7 or 8, and the t 5 is selected from 0, 1,2 or 3.
  6. 6. An aromatic amine derivative according to claim 1, wherein the compound of formula 1 is selected from any one of the following groups: 。
  7. 7. An organic light-emitting device comprising an anode, a cathode, and an organic layer, wherein the organic layer is located between the anode and the cathode or outside one or more of the anode and the cathode, and the organic layer contains any one or a combination of at least two of the aromatic amine derivatives according to any one of claims 1 to 6.
  8. 8. An organic light-emitting device according to claim 7, wherein the organic layer comprises a hole transport layer, and the hole transport layer comprises any one or a combination of at least two of the aromatic amine derivatives according to any one of claims 1 to 6.
  9. 9. An organic light-emitting device according to claim 7, wherein the organic layer comprises a cover layer containing any one or a combination of at least two of the aromatic amine derivatives according to any one of claims 1 to 6.
  10. 10. The organic electroluminescent device according to claim 7, wherein the organic layer comprises two or more light-emitting layers, wherein an N-type charge generation layer and a P-type charge generation layer are provided between each of the light-emitting layers, and wherein the P-type charge generation layer contains any one or a combination of at least two of the aromatic amine derivatives according to any one of claims 1 to 6.

Description

Aromatic amine derivative and organic electroluminescent device thereof Technical Field The invention relates to the technical field of organic electroluminescent materials, in particular to an aromatic amine derivative and an organic electroluminescent device thereof. Background Organic electroluminescent devices (OLEDs) have been widely used in flat panel displays, lighting, and other fields, and have become a research hotspot in the current display technology field, due to their excellent characteristics of self-luminescence, high contrast, wide viewing angle, rapid response, low power consumption, and flexible display. Common OLED device structures are anode/Hole Injection Layer (HIL)/Hole Transport Layer (HTL)/light emitting layer (EML)/Electron Transport Layer (ETL)/Electron Injection Layer (EIL)/cathode/capping layer (CPL). The electron-hole transport layer reduces a hole injection barrier through energy level matching, achieves efficient charge transport through high hole mobility, blocks electrons through energy level differences, regulates and controls thickness balance carrier velocity, ensures effective recombination of the light-emitting layer, modifies surface defects of an anode, isolates an electrode and the light-emitting layer, improves luminous efficiency and stability of a device, and prolongs service life of the device. In order to further improve the performance of the OLED device, a covering layer can be added on the outermost layer of the cathode to isolate air, moisture, ultraviolet rays and other harmful factors, and meanwhile, the OLED device has a higher refractive index, so that the luminous efficiency of the device is improved, and the service life of the device is prolonged. However, the hole transport layer materials and the capping layer materials which are excellent in current performance and widely used are relatively poor in quality, and there is a need for targeted development. Disclosure of Invention The invention aims to provide an aromatic amine derivative which has higher hole mobility and refractive index, good thermal stability and good film forming property, and can obviously improve the luminous efficiency and the service life of a device. The invention provides an aromatic amine derivative, which has a structure shown in a formula 1: wherein Ar is selected from formula 1-a or formula 1-b: The ring A, the ring B, the ring C and the ring D are independently selected from any one of substituted or unsubstituted C6-C30 aromatic ring, substituted or unsubstituted C2-C30 heteroaromatic ring, substituted or unsubstituted C3-C8 alicyclic ring and condensed ring group of C6-C30 aromatic ring; the X 0、X1、X2 is independently selected from O, S or NR c; Ar 1 is selected from any one of the following groups: The R 1、R1' is independently selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring, or two or more adjacent R 1 are connected with each other to form a substituted or unsubstituted ring; The n 1 is selected from 0,1, 2, 3 or 4, and the n 2 is selected from 0,1, 2, 3, 4, 5 or 6; The z are the same or different from each other and are selected from CH or N, and when z is connected with L 2, the z is selected from C; The X is selected from O, S, NR d、CReRe 'or SiR pRp'; the Y is selected from single bond, O, S, NR d'、CRsRs 'or SiR tRt'; The R c、Rd、Rd' is independently selected from any one of hydrogen, deuterium, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted silyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C3-C12 cycloalkenyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C3-C8 alicyclic and C6-C30 aromatic ring condensed ring groups, substituted or unsubstituted C3-C8 alicyclic and C2-C30 heteroaromatic ring condensed ring groups; The Ra、Re、Re'、Rp、Rp'、Rs、Rs'、Rt、Rt' is independently selected from any one of hydrogen, deuterium, cyano, halogen, nitro, trifluoromethyl, substituted or unsubstituted alkyl of C1 to C12, substituted or unsubstituted silyl, substituted or unsubstituted cycloalkyl of C3 to C12, substituted or unsubstituted alkenyl of C2 to C12, substituted or unsubstituted cycloalkenyl of C3 to C12, substituted or unsubstituted aryl of C6 to C30, substituted or unsubstituted heteroaryl of C2 to C30, substituted or unsubstituted fused ring of alicyclic of C3 to C8 and aromatic of