Cyclic compound and organic light emitting device comprising same

Patent metadata

Field	Value
Publication number	US-2022352472-A1
Application number	US-201917269190-A
Country	US
Kind code	A1
Filing date	Aug 30, 2019
Priority date	Aug 31, 2018
Publication date	Nov 3, 2022
Grant date	—

Abstract

A cyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same, and the compound used as a material of an organic material layer in the organic light emitting device and providing improved efficiency, low driving voltage and improved lifetime characteristics of the organic light emitting device.

First claim

1 . A compound represented by Chemical Formula 1:

in Chemical Formula 1,
Q 1 and Q 2 are each independently a C 6-30 aromatic ring;
n is an integer of 1 to 3,
a and b are each independently an integer of 0 to 3,
X is a single bond; CR 3 R 4 ; SiR 5 R 6 ; NR 7 ; O; S; SO 2 ; or a substituent represented by Chemical Formula 2,

R 1 to R 7 are each independently hydrogen; deuterium; a substituted or unsubstituted C 1-60 alkyl; a substituted or unsubstituted C 1-60 alkoxy; a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 5-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O and S, or adjacent groups of R 1 to R 7 are bonded to each other to form a ring,
L is a single bond; a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing at least one heteroatom selected from the group consisting of N, O and S, and
Ar is a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O and S; or a di(C 6-60 aryl)phosphine oxide group.

2 . The compound of claim 1 , wherein Q 1 and Q 2 are each independently a benzene or naphthalene ring.

3 . The compound of claim 1 , wherein X is a single bond; C(CH 3 ) 2 ; C(phenyl) 2 ; N(phenyl); O; S; SO 2 ; or a substituent represented by Chemical Formula 2:

4 . The compound of claim 1 , wherein n is 1.

5 . The compound of claim 1 , wherein both a and b are 0.

6 . The compound of claim 1 , wherein L is a single bond; phenylene; biphenyldiyl; naphthalenediyl; furandiyl; thiophenediyl; or pyridindiyl.

7 . The compound of claim 1 , wherein Ar is a phenyl substituted with cyano; —P(O)(phenyl) 2 ; or any one selected from the group consisting of the following:

wherein,
L 1 and L 2 are each independently a single bond; a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing at least one heteroatom selected from the group consisting of N, O, and S,
X is each independently N or C(R 8 ), provided that at least one of X is N,
Ar 1 and Ar 2 are each independently hydrogen; a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O, and S, and
R 8 is hydrogen; deuterium; a substituted or unsubstituted C 1-60 alkyl; a substituted or unsubstituted C 1-60 alkoxy; a substituted or unsubstituted C 6-60 aryl; a substituted or unsubstituted C 5-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O and S.

8 . The compound of claim 7 , wherein L 1 and L 2 are each independently a single bond; phenylene; biphenyldiyl; or naphthalenediyl.

9 . The compound of claim 7 , wherein Ar 1 and Ar 2 are each independently hydrogen; phenyl; phenyl substituted with cyano; biphenylene; terphenylene; naphthyl; phenanthrenyl; 9,10-dimethylphenanthrenyl; triphenylenyl; pyridinyl; dimethylfluorenyl; dibenzofuranyl; dibenzothiophenyl; carbazolyl; benzocarbazolyl; phenalenyl; quinolinyl; fluoranthenyl; phenoxazinyl; phenothiazinyl; 10-phenylphenazinyl; or 9,9-dimethylacridinyl.

10 . The compound of claim 1 , wherein Ar is any one selected from the group consisting of the following:

wherein,
X′ is N or CH, provided that at least one of X′ is N.

11 . The compound of claim 1 , wherein the compound represented by Chemical Formula 1 is any one selected from the group consisting of the following:

Assignees

• Lg Chemical Ltd

Inventors

• Kim Young Seok
• Kim Kongkyeom
• Koo Ki Dong
• Lee Min Woo
• Yoon Jung Min

Classifications

• C09K11/06

  containing organic luminescent materials · 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

• C07D239/74

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

• C07D471/04

  Ortho-condensed systems · CPC title