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CN-117720545-B - Nitrogen-containing compound, organic electroluminescent device and electronic device

CN117720545BCN 117720545 BCN117720545 BCN 117720545BCN-117720545-B

Abstract

The application belongs to the technical field of organic electroluminescence, and relates to a nitrogen-containing compound, an organic electroluminescent device and an electronic device, the nitrogen-containing compound has a structure shown in the formula 1, and can be used in an organic electroluminescent device to remarkably improve the performance of the organic electroluminescent device.

Inventors

  • MA TIANTIAN
  • ZHANG HEMING

Assignees

  • 陕西莱特光电材料股份有限公司

Dates

Publication Date
20260508
Application Date
20230912

Claims (8)

  1. 1. A nitrogen-containing compound, characterized in that the nitrogen-containing compound has a structure represented by formula 1: Wherein, the Each R 1 , each R 2 , each R 3 and each R 4 are the same or different and are each independently selected from deuterium, a halogen group, a cyano group, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, a deuterated aryl group having 6 to 12 carbon atoms, and a halogenated aryl group having 6 to 12 carbon atoms; n 1 is the number of R 1 , selected from 0,1, 2, 3 or 4, when n 1 is greater than 1, any two R 1 are the same or different; n 2 is the number of R 2 , selected from 0, 1 or 2, when n 2 is greater than 1, any two R 2 are the same or different; n 3 is the number of R 3 , selected from 0, 1 or 2, when n 3 is greater than 1, any two R 3 are the same or different; n 4 is the number of R 4 , selected from 0,1, 2, 3 or 4, when n 4 is greater than 1, any two R 4 are the same or different; L 1 、L 2 and L 3 are the same or different and are each independently selected from a single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothienyl group, a substituted or unsubstituted carbazolylene group; the substituents in L 1 、L 2 and L 3 are the same or different and are each independently selected from deuterium, fluoro, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl, phenyl or pentadeuterated phenyl; Ar 1 、Ar 2 and Ar 3 are the same or different and are each independently selected from the group consisting of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, and a substituted or unsubstituted dibenzothiophenyl group; substituents in Ar 1 、Ar 2 and Ar 3 are the same or different and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl, phenyl or pentadeuterated phenyl.
  2. 2. The nitrogen-containing compound according to claim 1, wherein each R 1 , each R 2 , each R 3 , and each R 4 are the same or different and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl, or phenyl.
  3. 3. The nitrogen-containing compound according to claim 1, wherein in formula 1, The same or different, each independently selected from the group consisting of:
  4. 4. a nitrogen-containing compound according to claim 3, wherein, The same or different, each independently selected from the group consisting of:
  5. 5. The nitrogen-containing compound according to claim 1, wherein the nitrogen-containing compound is selected from the group consisting of:
  6. 6. The organic electroluminescent device is characterized by comprising an anode and a cathode which are oppositely arranged, and a functional layer arranged between the anode and the cathode; the functional layer contains the nitrogen-containing compound according to any one of claims 1 to 5.
  7. 7. The organic electroluminescent device according to claim 6, wherein the functional layer comprises an organic light-emitting layer comprising the nitrogen-containing compound according to any one of claims 1 to 5.
  8. 8. Electronic device, characterized in that it comprises an organic electroluminescent device as claimed in claim 6 or 7.

Description

Nitrogen-containing compound, organic electroluminescent device and electronic device Technical Field The application relates to the technical field of nitrogen-containing compounds, in particular to a nitrogen-containing compound, an organic electroluminescent device containing the nitrogen-containing compound and an electronic device. Background With the development of electronic technology and the advancement of material science, the range of applications of electronic components for realizing electroluminescence is becoming wider and wider. Such electronic components typically include oppositely disposed cathodes and anodes, and a functional layer disposed between the cathodes and anodes. The functional layer is composed of a plurality of organic or inorganic film layers, and generally includes an organic light emitting layer, a hole transport layer between the organic light emitting layer and the anode, and an electron transport layer between the organic light emitting layer and the cathode. Taking an organic electroluminescent device as an example, it generally includes an anode, a hole transport layer, an organic light emitting layer, an electron transport layer, and a cathode, which are sequentially stacked. When voltage is applied to the cathode and the anode, the two electrodes generate an electric field, electrons at the cathode side move to the organic light-emitting layer under the action of the electric field, holes at the anode side also move to the organic light-emitting layer, the electrons and the holes are combined in the organic light-emitting layer to form excitons, and the excitons are in an excited state to release energy outwards, so that the organic light-emitting layer emits light outwards. The prior art discloses host materials that can be used to prepare organic light emitting layers in organic electroluminescent devices. However, there is still a need to continue to develop new materials to further improve the performance of organic electroluminescent devices. Disclosure of Invention In order to solve the above problems, the present application aims to provide a nitrogen-containing compound, and an organic electroluminescent device and an electronic apparatus comprising the same, which can improve the performance of the organic electroluminescent device and the electronic apparatus, for example, reduce the driving voltage of the device, and increase the efficiency and lifetime of the device. In a first aspect of the present application, there is provided a nitrogen-containing compound having a structure as shown in formula 1: Wherein, the Each R 1, each R 2, each R 3 and each R 4 are the same or different and are each independently selected from deuterium, a halogen group, a cyano group, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, a deuterated aryl group having 6 to 12 carbon atoms, and a halogenated aryl group having 6 to 12 carbon atoms; n 1 is the number of R 1, selected from 0,1, 2, 3 or 4, when n 1 is greater than 1, any two R 1 are the same or different; n 2 is the number of R 2, selected from 0, 1 or 2, when n 2 is greater than 1, any two R 2 are the same or different; n 3 is the number of R 3, selected from 0, 1 or 2, when n 3 is greater than 1, any two R 3 are the same or different; n 4 is the number of R 4, selected from 0,1, 2, 3 or 4, when n 4 is greater than 1, any two R 4 are the same or different; L 1、L2 and L 3 are the same or different and are each independently selected from a single bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms; Ar 1、Ar2 and Ar 3 are the same or different and are each independently selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms and a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms; The substituents in L 1、L2、L3、Ar1、Ar2 and Ar 3 are the same or different and are each independently selected from deuterium, halogen group, cyano group, alkyl group with 1-10 carbon atoms, cycloalkyl group with 3-10 carbon atoms, aryl group with 6-12 carbon atoms, deuterated aryl group with 6-12 carbon atoms, halogenated aryl group with 6-12 carbon atoms and trialkylsilicon group with 3-12 carbon atoms. According to a second aspect of the present application, there is provided an organic electroluminescent device comprising an anode and a cathode disposed opposite each other, and a functional layer disposed between the anode and the cathode, the functional layer comprising the above-mentioned nitrogen-containing compound. According to a third aspect of the present application, there is provided an electronic device comprising the organic electroluminescent device of the second aspect. The mother nucleus of the nitrogen-containing compound provided by the application has indolocarbazolo indole with a