A color conversion sheet converts incident light into light with a wavelength longer than that of the incident light. The color conversion sheet includes the following layer (A) and layer (B): the layer (A): a layer containing an organic light-emitting material (a) that exhibits light emission with a peak wavelength observed in a region of 500 nm or more and 580 nm or less by using excitation light in a wavelength range of 400 nm or more and 500 nm or less and a binder resin; and the layer (B): a layer containing an organic light-emitting material (b) that exhibits light emission with a peak wavelength observed in a region of 580 nm or more and 750 nm or less by being excited by either or both of excitation light in a wavelength range of 400 nm or more and 500 nm or less and light emission from the organic light-emitting material (a) and a binder resin.

A color conversion sheet converts incident light into light with a wavelength longer than that of the incident light. The color conversion sheet includes the following layer (A) and layer (B): the layer (A): a layer containing an organic light-emitting material (a) that exhibits light emission with a peak wavelength observed in a region of 500 nm or more and 580 nm or less by using excitation light in a wavelength range of 400 nm or more and 500 nm or less and a binder resin; and the layer (B): a layer containing an organic light-emitting material (b) that exhibits light emission with a peak wavelength observed in a region of 580 nm or more and 750 nm or less by being excited by either or both of excitation light in a wavelength range of 400 nm or more and 500 nm or less and light emission from the organic light-emitting material (a) and a binder resin.

A technical problem of the present invention is to provide a condensed polycyclic organic pigment having excellent dispersion properties and dispersion stability. More specifically, the technical problem of the present invention is to provide a condensed polycyclic organic pigment in which a practically sufficient viscosity is achieved in terms of both the initial viscosity of a base ink and the viscosity over time of a base ink when used in the printing ink application. As a result of thorough studies on the surface state of organic pigment particles and interaction among components constituting a printing ink, it has been found that the technical problem can be solved by using a polyvalent metal inorganic salt in a condensed polycyclic organic pigment, thus accomplishing the present invention.

A technical problem of the present invention is to provide a condensed polycyclic organic pigment having excellent dispersion properties and dispersion stability. More specifically, the technical problem of the present invention is to provide a condensed polycyclic organic pigment in which a practically sufficient viscosity is achieved in terms of both the initial viscosity of a base ink and the viscosity over time of a base ink when used in the printing ink application. As a result of thorough studies on the surface state of organic pigment particles and interaction among components constituting a printing ink, it has been found that the technical problem can be solved by using a polyvalent metal inorganic salt in a condensed polycyclic organic pigment, thus accomplishing the present invention.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I): ##STR00001##
including stereoisomers, salts and tautomers thereof, wherein R.sup.1, R.sup.2, R.sup.3, L.sup.1, L.sup.2, L.sup.3, L.sup.4, L.sup.5, L.sup.6, M.sup.1, M.sup.2, A, q, w and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I): ##STR00001##
including stereoisomers, salts and tautomers thereof, wherein R.sup.1, R.sup.2, R.sup.3, L.sup.1, L.sup.2, L.sup.3, L.sup.4, L.sup.5, L.sup.6, M.sup.1, M.sup.2, A, q, w and n are as defined herein. Methods associated with preparation and use of such compounds are also provided.

The instant disclosure generally relates to a coloring composition for coloring mammalian or synthetic keratin fibers or keratinous surfaces. The composition comprising a medium, optionally pigment microparticles and at least one dye, in particular at least one peri-arylene dye dissolved in the medium. Methods of using such compositions are also described herein.

The present invention is generally directed to the synthesis and use of fluorophores. It is more specifically directed to the synthesis and use of deuterated fluorophores. In one case, the present invention provides a compound of the structure shown in FIG. 44.

The present invention is generally directed to the synthesis and use of fluorophores. It is more specifically directed to the synthesis and use of deuterated fluorophores. In one case, the present invention provides a compound of the structure shown in FIG. 44.

The present invention relates to optical articles and optical filtering coatings comprising at least one absorbing dye comprising one of the groups of formulae of formulae (I), (II), (III) and (IV), wherein R represents an aryl or alkyi group, and the groups of formulae (I), (II), (III) and (IV) have at least one carbon atom substituted with a group chosen from OH, CN, bromo, NO.sub.2, alkoxy, aryloxy, COOH, CHO, COalkyl, COaryl, haloalkyl, SH, S-alkyl, S-aryl, SO.sub.2alkyl, OSO.sub.2alkyl, SO.sub.2aryl, OSO.sub.2aryl and sulfonamide, or have at least two carbon atoms substituted with a chloro group.

##STR00001##