Coloring composition, light absorption anisotropic film, laminate, and image display device
Provided are a coloring composition with which a light absorption anisotropic film having excellent durability can be formed, a light absorption anisotropic film, a laminate, and an image display device. A coloring composition according to the invention contains a dichroic dye compound having a structure represented by Formula (1D) and a liquid crystalline compound.
1. A coloring composition comprising:
A dichroic dye compound having a structure represented by Formula (1D); and
a liquid crystalline compound, wherein
in Formula (1D), C 1 and C 2 each independently represent a monovalent substituent, and at least one of C 1 and C 2 represents a crosslinkable group,
in Formula (1D), M 1 represents —O—, —S—, —O—CO—O—, —CO—NR N —, —O—CONR N —, —SO 2 —, —SO—, an alkylene group, a cycloalkylene group, an alkenylene group, and a group obtained by combining two or more of the above groups, R N represents a hydrogen atom or an alkyl group, M 2 represents a divalent linking group, and in at least one of M 1 and M 2 , the number of atoms of a main chain is 4 or more,
in Formula (1D), Ar 1 and Ar 2 each independently represent any one of a phenylene group which may have a substituent, a naphthylene group which may have a substituent, and a biphenylene group which may have a substituent,
in Formula (1D), E represents any one of a nitrogen atom, an oxygen atom, and a sulfur atom,
in Formula (1D), R 1 represents a hydrogen atom or a substituent,
in Formula (1D), R 2 represents a hydrogen atom or an alkyl group which may have a substituent,
in Formula (1D), n represents 0 or 1, such that in a case where E is a nitrogen atom, n is 1, and in a case where E is an oxygen atom or a sulfur atom, n is 0,
in Formula (1D), at least one of the following Condition 1 and Condition 2 is satisfied,
Condition 1: C 1 is a crosslinkable group, and the number of atoms of a main chain of M 1 is 4 or more,
Condition 2: C 2 is a crosslinkable group, and the number of atoms of a main chain of M 2 is 4 or more,
the liquid crystalline compound is a high-molecular-weight liquid crystalline compound having a repeating unit represented by Formula (1), or both a repeating unit represented by Formula (2) and a repeating unit represented by Formula (3),
in Formula (1), Formula (2) and Formula (3), R represents a hydrogen atom or a methyl group, L represents a single bond or a divalent linking group, B represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkoxy group, an amino group, an oxycarbonyl group, an acyloxy group, an acylamino group, an alkoxycarbonylamino group, a sulfonylamino group, a sulfamoyl group, a carbamoyl group, an alkylthio group, a sulfonyl group, a sulfinyl group, or a ureido group, C represents a crosslinkable group, and M represents a mesogenic group,
the crosslinkable group is an acryloyl group or a methacryloyl group, and
the dichroic dye compound and the liquid crystalline compound are aligned at a high alignment degree.
2. The coloring composition according to claim 1 ,
wherein in Formula (1D), the number of atoms of a main chain of at least one of M 1 and M 2 is 7 or more.
3. The coloring composition according to claim 2 ,
wherein in Formula (1D), both C 1 and C 2 are crosslinkable groups.
4. A light absorption anisotropic film which is formed using the coloring composition according to claim 2 .
5. The coloring composition according to claim 1 ,
wherein in Formula (1D), both C 1 and C 2 are crosslinkable groups.
6. A light absorption anisotropic film which is formed using the coloring composition according to claim 5 .
7. A light absorption anisotropic film which is formed using the coloring composition according to claim 1 .
8. A laminate comprising:
a base; and
the light absorption anisotropic film according to claim 7 which is formed on the base.
9. The laminate according to claim 8 , further comprising:
a λ/4 plate which is formed on the light absorption anisotropic film.
10. An image display device comprising:
the laminate according to claim 9 .
11. The laminate according to claim 8 , further comprising:
an oxygen shielding layer which is formed on the light absorption anisotropic film.
12. An image display device comprising:
the laminate according to claim 11 .
13. An image display device comprising:
the laminate according to claim 8 .
14. An image display device comprising:
the light absorption anisotropic film according to claim 7 .