Squarylium compound, light-emitting composition, and light-emitting film

Patent metadata

Field	Value
Publication number	US-11261374-B2
Application number	US-201917275912-A
Country	US
Kind code	B2
Filing date	Sep 2, 2019
Priority date	Sep 14, 2018
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

The present invention addresses the issue of providing: a novel squarylium compound that has high light-emission efficiency, in particular little reduction in light-emission efficiency in a solid membrane, and is capable of emitting a near-infrared light having excellent light resistance; and a light-emitting composition and a light-emitting film that contain said squarylium compound. This squarylium compound is characterized by having a structure indicated by general formula (1).

First claim

What is claimed is:

1. A squarylium compound having a structure represented by Formula (1),

in Formula (1), a ring A and a ring B each respectively represent an aromatic hydrocarbon ring which may have a substituent; R 1 represents an alkyl group, a cycloalkyl group, an aromatic hydrocarbon group, or a halogen atom; R 2 and R 3 each respectively represent an alkyl group or a cycloalkyl group; R represents a substituent; R 1 and R, or two Rs may be combined with each other to form a ring; R 4 and R 5 each respectively represent a hydroxy group or an amino group; and n1 and n2 each respectively represent an integer of 0 to 4.

2. The squarylium compound described in claim 1 , wherein the compound having a structure represented by Formula (1) is a compound having a structure represented by Formula (2),

in Formula (2), a ring A and a ring B each respectively represent an aromatic hydrocarbon ring which may have a substituent; R 1 and R 6 each respectively represent an alkyl group, a cycloalkyl group, an aromatic hydrocarbon group, or a halogen atom; R 2 and R 3 each respectively represent an alkyl group or a cycloalkyl group; R represents a substituent; R 1 and R, R 6 and R, or two Rs may be combined with each other to form a ring; R 4 and R 5 each respectively represent a hydroxy group or an amino group; and n1 and n2 each respectively represent an integer of 0 to 4.

3. The squarylium compound described in claim 1 , wherein the compound having a structure represented by Formula (1) is a compound having a structure represented by Formula (3),

in Formula (3), a ring B represents an aromatic hydrocarbon ring which may have a substituent; R 1 and R 6 each respectively represent an alkyl group, a cycloalkyl group, an aromatic hydrocarbon group, or a halogen atom; R 2 and R 3 each respectively represent an alkyl group or a cycloalkyl group; R represents a substituent; R 1 and R, R 6 and R, or two Rs may be combined with each other to form a ring; R 5 represents a hydroxy group or an amino group; and n1 and n2 each respectively represent an integer of 0 to 4.

4. The squarylium compound described in claim 1 , wherein the compound having a structure represented by Formula (1) is a compound having a structure represented by Formula (4),

in Formula (4), R 1 and R 6 each respectively represent an alkyl group, a cycloalkyl group, an aromatic hydrocarbon group, or a halogen atom; R 2 and R 3 each respectively represent an alkyl group or a cycloalkyl group; R represents a substituent; R 1 and R, R 6 and R, or two Rs may be combined with each other to form a ring; and n1 and n2 each respectively represent an integer of 0 to 4.

5. A light-emitting composition containing the squarylium compound described in claim 1 .

6. A light-emitting film containing the squarylium compound described in claim 1 .

Assignees

• Konica Minolta Inc

Inventors

• Sugawara Ryutaro

Classifications

• C07C215/86

  being formed by two rings · CPC title

• C09K2211/1007

  Non-condensed systems · CPC title

• C07C2601/16

  the ring being unsaturated · CPC title

• C07C215/88

  being formed by at least three rings · CPC title

• C07C2601/04

  with a four-membered ring · CPC title