Compound, light emitter, and organic light emitting device

Patent metadata

Field	Value
Publication number	US-9793492-B2
Application number	US-201414768507-A
Country	US
Kind code	B2
Filing date	Feb 14, 2014
Priority date	Feb 18, 2013
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A compound represented by D-A-D is useful as a light emitter for an organic electroluminescent device:

First claim

What is claimed is:

1. A compound represented by the following Formula (1):
D-A-D  Formula (1)

wherein:
A represents a divalent group having a structure represented by one of the following Formulae (2) to (5):

in which a hydrogen atom in the structures of the Formulae (2) to (5) may be substituted by a substituent; and
the two groups of D each independently represent a group having a structure selected from the following structures:

in which a hydrogen atom in the above structures may be substituted by a substituent.

2. The compound according to claim 1 , wherein A in the Formula (1) has a structure represented by one of the following Formulae (6) to (9):

in which R 1 to R 10 in the formulae (6) to (9) each independently represent a hydrogen atom or a substituent, and R 1 and R 2 , R 3 and R 4 , R 5 and R 6 , and R 7 and R 8 each may be bonded to each other to form a cyclic structure.

3. The compound according to claim 1 , wherein the two groups of D have the same structure.

4. The compound according to claim 1 , wherein D in the Formula (1) has a structure represented by one of the following Formulae (10) to (12):

in which R 11 to R 18 and R 21 to R 25 in the Formulae (10) to (12) each independently represent a hydrogen atom or a substituent, and R 11 and R 12 , R 12 and R 13 , R 13 and R 14 , R 15 and R 16 , R 16 and R 17 , R 17 and R 18 , R 21 and R 22 , R 22 and R 23 , R 23 and R 24 , and R 24 and R 25 each may be bonded to each other to form a cyclic structure.

5. The compound according to claim 4 , wherein D has a structure represented by the Formula (11).

6. A light emitter consisting of a compound represented by the following Formula (1):
D-A-D  Formula (1)

wherein:
A represents a divalent group having a structure represented by one of the following Formulae (2) to (5):

in which a hydrogen atom in the structures of the Formulae (2) to (5) may be substituted by a substituent; and
the two groups of D each independently represent a group having a structure selected from the following structures:

in which a hydrogen atom in the above structures may be substituted by a substituent.

7. A delayed fluorescent emitter having a structure represented by the following Formula (1):
D-A-D  Formula (1)

wherein:
A represents a divalent group having a structure represented by one of the following Formulae (2) to (5):

in which a hydrogen atom in the structures of the Formulae (2) to (5) may be substituted by a substituent; and
the two groups of D each independently represent a group having a structure selected from the following structures:

in which a hydrogen atom in the above structures may be substituted by a substituent.

8. An organic light emitting device containing a substrate having thereon a light emitting layer containing a compound represented by the following Formula (1):
D-A-D  Formula (1)

wherein:
A represents a divalent group having a structure represented by one of the following Formulae (2) to (5):

in which a hydrogen atom in the structures of the formulae (2) to (5) may be substituted by a substituent; and
the two groups of D each independently represent a group having a structure selected from the following structures:

in which a hydrogen atom in the above structures may be substituted by a substituent.

9. The organic light emitting device according to claim 8 , wherein the organic light emitting device emits delayed fluorescent light.

10. The organic light emitting device according to claim 8 , wherein the organic light emitting device is an organic electroluminescent device.

Assignees

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

Inventors

• SAGARA Yuta
• Tanaka Hiroyuki
• SHIZU Katsuyuki
• Miyazaki Hiroshi
• Adachi Chihaya

Classifications

• C09K2211/1037

  with sulfur · CPC title

• H01L51/5012

  Electricity · mapped topic

• C09K2211/1044

  containing two nitrogen atoms as heteroatoms · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• C09K2211/1033

  with oxygen · CPC title