Nitrogen-containing compound, organic electroluminescent device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-11588115-B2
Application number	US-202017623484-A
Country	US
Kind code	B2
Filing date	Jul 23, 2020
Priority date	Dec 31, 2019
Publication date	Feb 21, 2023
Grant date	Feb 21, 2023

Abstract

The present disclosure provides a nitrogen-containing compound, an organic electroluminescent device and an electronic apparatus, belonging to the technical field of organic materials. The nitrogen-containing compound of the present disclosure has a carbazole structure and a fluorenyl group, two cooperating with each other and has a high first triplet energy level. Therefore, the nitrogen-containing compound of the present disclosure is suitable for use as a host material of a light-emitting in an organic electroluminescent device. The nitrogen-containing compound can improve the performance of the organic electroluminescent device.

First claim

The invention claimed is:

1. A nitrogen-containing compound, wherein the nitrogen-containing compound has a structural formula as shown in a chemical formula 1:

wherein, ring A is a benzene ring or naphthalene ring;
R 1 and R 2 are the same or different from each other, and are each independently selected from deuterium, fluorine, chlorine, cyano, methyl, isopropyl, ethyl, cyclopropyl and tert-butyl;
n 1 is 0, 1, 2, 3 or 4; when n 1 is greater than 1, any two of R 1 are the same or different;
n 2 is 0, 1, 2, 3 or; when n 2 is greater than 1, any two of R 2 are the same or different; and
W is

wherein L is independently selected from a single bond, or an unsubstituted L 1 , or a substituted L 1 , wherein the unsubstituted L 1 is selected from the group consisting of the following groups:

wherein, the substituted L 1 is a group formed by substituting the unsubstituted L 1 by one or more substituents selected from deuterium, F, Cl, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl and phenyl; and when the substituted L 1 has a plurality of substituents, any two of the substituents are the same or different;
the Ar is selected from an unsubstituted Ar 1 or a substituted Ar 1 , wherein the unsubstituted Ar 1 is selected from the group consisting of the following groups:

the substituted Ar 1 is a group formed by substituting the unsubstituted Ar 1 by one or more of substituents selected from deuterium, F, Cl, Br, cyano, alkyl with 1 to 4 carbon atoms, phenyl, naphthyl, dibenzothienyl, dibenzofuranyl, carbazolyl, pyridinyl, halomethyl and trimethylsilyl; and when the substituted Ar 1 has a plurality of substituents, any two of the substituents are the same or different;
or, the Ar is selected from the group consisting of the following substituents:

wherein, Ar 2 is selected from hydrogen, deuterium, substituted or unsubstituted aryl with 6 to 15 carbon atoms, and substituted or unsubstituted heteroaryl with 3 to 12 carbon atoms: any two of Ar 2 are the same or different; and the heteroaryl comprises 1, 2 or 3 heteroatoms of any choice from O, S or N;
substituents in Ar 2 are selected from deuterium, F, Cl and cyano; and when Ar 2 has a plurality of substituents, any two of the substituents are the same or different.

2. The nitrogen-containing compound according to claim 1 , wherein the nitrogen-containing compound has a structural formula as shown in any one of the chemical formulas (f-1) to (f-12):

3. The nitrogen-containing compound according to claim 1 , wherein the Ar 2 is selected from: hydrogen, substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted anthracyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted biphenyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted dibenzothiophenyl, substituted or unsubstituted dibenzofuryl, substituted or unsubstituted pyridyl, substituted or unsubstituted pyrimidyl, substituted or unsubstituted pyrazinyl, substituted or unsubstituted quinolyl, substituted or unsubstituted isoquinolyl, and substituted or unsubstituted quinazolinyl; and
substituents in Ar 2 are each independently selected from: F, deuterium, and cyano.

4. A nitrogen-containing compound, wherein the nitrogen-containing compound is selected from the group consisting of the following compounds:

Assignees

• Shaanxi Lighte Optoelectronics Mat Co Ltd

Inventors

• Ma Tiantian
• Yang Lei

Classifications

• H10K85/654

  comprising only nitrogen as heteroatom (H10K85/652 takes precedence) · CPC title

• C07D405/14

  containing three or more hetero rings · CPC title

• C07D405/10 Primary

  linked by a carbon chain containing aromatic rings · CPC title

• C07D401/10

  linked by a carbon chain containing aromatic rings · CPC title

• C07D491/048

  the oxygen-containing ring being five-membered · CPC title