The thiol group-containing colored compound includes a chromophore having absorption in a visible light region, a thiol group, and a spacer provided between the chromophore and the thiol group. The spacer is a chain alkylene group having 2 to 30 carbon atoms, a cyclic alkylene group having 3 to 30 carbon atoms, or a derivative of either alkylene group in which the number of carbon atoms in an additional structure of the alkylene group is equal to or less than the number of carbon atoms in the alkylene group.

The present disclosure relates to a novel merocyanine-based compound capable of labeling biomolecules by intercalating biomolecules, and to a dye, kit and contrast medium composition for labelling biomolecules comprising the same.

The present disclosure relates to a novel merocyanine-based compound capable of labeling biomolecules by intercalating biomolecules, and to a dye, kit and contrast medium composition for labelling biomolecules comprising the same.

A light absorption filter containing a resin, a specific dye, and a compound that generates a radical upon ultraviolet irradiation, in which a polymer constituting the resin contains a crosslinkable group, a light absorption filter containing a resin, a compound A having an acid group, a compound B that forms a hydrogen bond with the acid group contained in the compound A and generates a radical upon ultraviolet irradiation, and a specific dye, in which the compound A is contained in a side chain of a polymer constituting the resin, an optical filter using these light absorption filters and a manufacturing method thereof, and an organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device, each of which contains the optical filter.

A light absorption filter containing a resin, a specific dye, and a compound that generates a radical upon ultraviolet irradiation, in which a polymer constituting the resin contains a crosslinkable group, a light absorption filter containing a resin, a compound A having an acid group, a compound B that forms a hydrogen bond with the acid group contained in the compound A and generates a radical upon ultraviolet irradiation, and a specific dye, in which the compound A is contained in a side chain of a polymer constituting the resin, an optical filter using these light absorption filters and a manufacturing method thereof, and an organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device, each of which contains the optical filter.

A coloring composition having excellent light fastness, color migration properties, and flatness, a colorant, and a method for producing a colorant are provided. Further, a cured film, a color filter, a method for manufacturing a color filter, a solid-state imaging device, an image display device, and an organic electroluminescent element, each using such the coloring composition, are also provided. The coloring composition contains a colorant represented by General Formula (1) and a curable compound, and has a specific absorbance of 5 or more at a maximum absorption wavelength of 400 nm to 800 nm. R.sup.1 represents an (m+n)-valent linking group, P represents a monovalent substituent having a repeating units derived from a vinyl compound, D represents a colorant structure, and R.sup.2 and L.sup.1 each independently represent a single bond or a divalent linking group.

(D-R.sup.2).sub.nR.sup.1-(L.sup.1-P).sub.m(1)