Nitrogen-containing compound, electronic element and electronic device

Patent metadata

Field	Value
Publication number	US-11827615-B2
Application number	US-202117528554-A
Country	US
Kind code	B2
Filing date	Nov 17, 2021
Priority date	Dec 31, 2019
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

The present disclosure provides a nitrogen-containing compound, an electronic element and an electronic device, which belongs to the technical field of organic materials. The nitrogen-containing compound has a structure of Chemical Formula 1, wherein R1 and R2 are each independently selected from hydrogen or a group represented by Chemical Formula 1-1, and one and only one of R1 and R2 has the group of Chemical Formula 1-1; when R1 or R2 is selected from hydrogen, said R1 and R2 may be replaced by R4. The nitrogen-containing compound can improve the performance of electronic elements.

First claim

What is claimed is:

1. A nitrogen-containing compound having a structure shown in Chemical Formula 1:

wherein

represents a chemical bond;
R 1 and R 2 are each independently selected from hydrogen or a group represented by Chemical Formula 1-1, and one and only one of R 1 and R 2 has the group represented by Chemical Formula 1-1;
when R 1 or R 2 is selected from hydrogen, said R 1 and R 2 may be replaced by R 4 ;
R 3 , R 4 are each independently selected from an aryl having 6 to 20 carbon atoms;
a is 1, b is 0, or a is 0, b is 1;
L is selected from single bond, a substituted or unsubstituted arylene having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene having 3 to 30 carbon atoms; and
Ar 1 and Ar 2 are each independently selected from the following substituted or unsubstituted groups: an aryl having 6 to 30 carbon atoms, or a heteroaryl having 3 to 30 carbon atoms.

2. The nitrogen-containing compound of claim 1 , wherein L is single bond or selected from the group consisting of the following groups:

3. The nitrogen-containing compound of claim 1 , wherein Ar 1 and Ar 2 are each independently selected from the group consisting of the following groups:

4. The nitrogen-containing compound of claim 1 , wherein R 3 and R 4 are each independently selected from an aryl having 6 to 18 carbon atoms.

5. The nitrogen-containing compound of claim 1 , wherein R 3 and/or R 4 are an aryl having 6 carbon atoms.

6. The nitrogen-containing compound of claim 1 , wherein R 3 is an aryl having 6 carbon atoms, and a is 1, b is 0.

7. The nitrogen-containing compound of claim 1 , wherein R 4 is an aryl having 6 carbon atoms, and a is 0, b is 1.

8. The nitrogen-containing compound of claim 1 , wherein the nitrogen-containing compound selected from the group consisting of the following compounds:

9. An electronic element, comprising:
an anode;
a cathode, wherein the anode and the cathode are disposed opposite to each other; and
a functional layer disposed between the anode and the cathode, wherein the functional layer contains the nitrogen-containing compound of claim 1 .

10. The electronic element of claim 9 , wherein the functional layer includes an electron blocking layer, and the electron blocking layer contains the nitrogen-containing compound.

11. The electronic element of claim 9 , wherein the electronic element is an organic electroluminescence device.

12. An electronic device including the electronic element of claim 9 .

Assignees

• Shaanxi Lighte Optoelectronics Mat Co Ltd

Inventors

• Nie Qiqi
• Cao Jiamei
• Ma Tiantian

Classifications

• H10K50/181

  Electron blocking layers · CPC title

• C07D333/76 Primary

  Dibenzothiophenes · CPC title

• C07C211/54

  having amino groups bound to two or three six-membered aromatic rings · CPC title

• C07D209/82

  Carbazoles; Hydrogenated carbazoles · CPC title

• C07D209/86

  with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system · CPC title