Compound, light emitting material, and organic light emitting device

Patent metadata

Field	Value
Publication number	US-2016164000-A1
Application number	US-201414905019-A
Country	US
Kind code	A1
Filing date	Jun 23, 2014
Priority date	Jul 16, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

A compound represented by A-D-A is useful as a light. emitting material used in an organic electroluminescent device and others.

First claim

1 . A compound represented by the following general formula (2):

wherein in the general formula (2), R 1 to R 5 each independently represent a hydrogen atom or a substituent, provided that at least two of R 1 , R 2 , R 4 and R 5 represent a cyano group; R 6 to R 10 each independently represent a hydrogen atom or a substituent, provided that at least two of R 6 , R 7 , R 9 and R 10 represents a cyano group; and R 11 to R 17 and R 21 to R 27 each independently represent a hydrogen atom or a substituent.

2 . The compound according to claim 1 , wherein the two cyanobenzenes bonded to the nitrogen atoms of the carbazole rings in the general formula (2) have the same structure.

3 - 4 . (canceled)

5 . The compound according to claim 1 , wherein in the general formula (2), R 1 , R 5 , R 6 and R 10 each represent a cyano group.

6 . The compound according to claim 1 , wherein in the general formula (2), R 2 , R 4 , R 7 and R 9 each represent a cyano group.

7 . The compound according to claim 1 , wherein in the general formula (2), R 1 to R 5 and R 6 to R 10 except for one representing a cyano group each represent a hydrogen atom or a substituted or unsubstituted alkyl group having from 1 to 10 carbon atoms, and R 11 to R 17 and R 21 to R 27 each represent a hydrogen atom or a substituted or unsubstituted alkyl group having from 1 to 10 carbon atoms.

8 . The compound according to claim 1 , wherein in the general formula (2), R 1 to R 5 and R 6 to R 10 except for one representing a cyano group each represent a hydrogen atom, and R 11 to R 17 and R 21 to R 27 each represent a hydrogen atom.

9 . A light emitting material comprising the compound according to claim 1 .

10 . A delayed fluorescent emitter having a structure represented by the following general formula (2)
General Formula (2)

wherein in the general formula (2), R 1 to R 5 each independently represent a hydrogen atom or a substituent, provided that at least one thereof represents a cyano group; R 6 to R 10 each independently represent a hydrogen atom or a substituent, provided that at least one thereof represents a cyano group; and R 11 to R 17 and R 21 to R 27 each independently represent a hydrogen atom or a substituent.

11 . An organic light emitting device comprising a substrate having thereon a light emitting layer containing the light emitting material according to claim 9 .

12 . The organic light emitting device according to claim 11 , wherein the organic light emitting device emits delayed fluorescent light.

13 . The organic light emitting device according to claim claim 11 , wherein the organic light emitting device is an organic electroluminescent device.

Assignees

• Univ Kyushu Nat Univ Corp
• Nippon Steel & Sumikin Chem Co

Inventors

• Li Bo
• Orita Akihiro
• Miyazaki Hiroshi
• Otera Junzo
• Nomura Hiroko
• Adachi Chihaya

Classifications

• C07D209/82 Primary

  Carbazoles; Hydrogenated carbazoles · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C07D209/86

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

• C09K11/06

  containing organic luminescent materials · CPC title

• C09K2211/1007

  Non-condensed systems · CPC title