Organic electroluminescent compound and organic electroluminescent device comprising the same

Patent metadata

Field	Value
Publication number	US-2024260461-A1
Application number	US-202418403894-A
Country	US
Kind code	A1
Filing date	Jan 4, 2024
Priority date	Jan 9, 2023
Publication date	Aug 1, 2024
Grant date	—

Abstract

The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising it. When the organic electroluminescent compound according to the present disclosure is included in a specific organic electroluminescent device, the organic electroluminescent device may exhibit a low driving voltage and/or improved lifespan properties.

First claim

1 . An organic electroluminescent device comprising: a plurality of light emitting units disposed between a first electrode and a second electrode and comprising at least one light-emitting layer(s); and at least one n-type charge generation layer(s) disposed between the adjacent light-emitting units, wherein the n-type charge generation layer comprises a triazinyl quinoline derivative compound.

2 . The organic electroluminescence device according to claim 1 , wherein the triazinyl quinoline derivative compound is represented by the following formula 1:

In formula 1,
R 1 to R 5 each independently represent, hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, or a substituted or unsubstituted tri(C6-C30)arylsilyl;
X 1 and X 2 each independently represent CR 8 or are represented by the following formula 2, and one of X 1 and X 2 is represented by the following formula 2, with the proviso that the case where both X 1 and X 2 are represented by the following formula 2 is excluded;
R 8 represents hydrogen, deuterium, or a substituted or unsubstituted (C6-C30)aryl, and

In formula 2,
L 1 and L 2 each independently represent a single bond, a substituted or unsubstituted (C6-C30)arylene, a substituted or unsubstituted (3- to 30-membered)heteroarylene, or a substituted or unsubstituted (C3-C30)cycloalkylene;
R 6 and R 7 each independently represent a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3-to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, or a substituted or unsubstituted tri(C6-C30)arylsilyl; and
* represents a carbon atom attached to formula 1.

3 . The organic electroluminescence device according to claim 2 , wherein R 1 to R 5 are each independently selected from hydrogen, deuterium, a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, or a combination thereof, and the substituted phenyl or the substituted naphthyl is substituted with at least one selected from deuterium and a phenyl substituted with deuterium, and
wherein R 8 is hydrogen, deuterium, or a substituted or unsubstituted phenyl, and the substituted phenyl is substituted with deuterium.

4 . The organic electroluminescence device according to claim 2 , wherein L 1 and L 2 are each independently selected from a single bond, a substituted or unsubstituted phenylene, a substituted or unsubstituted naphthylene, a substituted or unsubstituted biphenylene, or a combination thereof, and the substituted phenylene, the substituted naphthylene, or the substituted biphenylene is substituted with deuterium.

5 . The organic electroluminescence device according to claim 2 , wherein R 6 and R 7 are each independently selected from a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted dibenzofuranyl, a substituted or unsubstituted dibenzothiophenyl, a substituted or unsubstituted biphenyl, a substituted or unsubstituted m-terphenyl, a substituted or unsubstituted o-terphenyl, a substituted or unsubstituted dimethylfluorenyl, a substituted or unsubstituted diphenylfluorenyl, a substituted or unsubstituted phenanthrenyl, a substituted or unsubstituted phenanthrolinyl, a substituted or unsubstituted anthracenyl, a substituted or unsubstituted chrysenyl, a substituted or unsubstituted isocrysenyl, a substituted or unsubstituted benzoxazolyl, a substituted or unsubstituted carbazolyl, or a combination thereof, and the substituted phenyl, the substituted naphthyl, the substituted dibenzofuranyl, the substituted dibenzothiophenyl, the substituted biphenyl, the substituted m-terphenyl, the substituted o-terphenyl, the substituted dimethylfluorenyl, the substituted diphenylfluorenyl, the substituted phenanthrenyl, or the substituted chrysenyl is substituted with deuterium, the substituted phenanthrolinyl is substituted with at least one selected from phenyl and naphthyl, and the substituted anthracenyl, the substituted benzoxazolyl, or the substituted carbazolyl is substituted with phenyl.

6 . The organic electroluminescence device according to claim 2 , wherein the compound represented by formula 1 is selected from the following compounds:

Assignees

• Rohm & Haas Elect Materials Korea Ltd

Inventors

• Choi Eun-Joung
• Seo Mi-Ran
• Lim Young-Rok
• Kim Haeyeon
• Park So-Mi
• Rathwell Dominea

Classifications

• C07D401/14

  containing three or more hetero rings · CPC title

• C07D471/04

  Ortho-condensed systems · CPC title

• C07D413/14

  containing three or more hetero rings · CPC title

• C07D409/14

  containing three or more hetero rings · CPC title

• C07D405/14

  containing three or more hetero rings · CPC title