A fluorescent labeling agent contains a fluorescent dye represented by general formula (1). General formula (1): Q-Z—R.sub.1-R.sub.2-R.sub.3 (In the formula, Q represents the residue of a fluorescent dye. Z represents a direct bond, alkylene group, or arylene group. R.sub.1 represents a direct bond, —O—, —OP(═O)R.sub.4—, —OC(═O)—, —OS(═O).sub.2—, —OSiR.sub.5R.sub.6—, —C(═O)—, or —C(═O)NH—. R.sub.2 represents a group selected from the group consisting of alkylene groups, arylene groups, and heterocyclic groups, or represents a group provided by combining these groups. R.sub.3 represents —COOM.sub.1, —NR.sub.7R.sub.8, or —N.sup.+R.sub.9R.sub.10R.sub.11. Here, R.sub.4 represents a hydrogen atom, hydroxyl group, alkyl group, aryl group, alkoxy group, aryloxy group, or heterocyclic group. R.sub.5 and R.sub.6 each independently represent an alkyl group, aryl group, or heterocyclic group. R.sub.7-R.sub.11 each independently represent a hydrogen atom, alkyl group, or aryl group. M.sub.1 represents a monovalent cation.)

There is provided an ink composition including: a predetermined dye (C-1); a dye (C-2) containing at least one of C.I. Direct Blues 86 and 199; an alkylene oxide adduct of an acetylene glycol having a main chain of 12 or more carbon atoms; an acetylene glycol having a main chain of 10 or more carbon atoms; and a polyoxyalkylene alkyl ether, in which the content ratio A of the dye (C-1) and the dye (C-2) (the dye (C-1):the dye (C-2)) is 7:3 to 9.5:0.5, and the content of the dye (C-1) is 2.0 mass % to 5.0 mass %.

A phthalocyanine compound which is suitable for forming a color filter used for a liquid crystal display device, a method for synthesis the phthalocyanine compound, a composition containing a resin and the phthalocyanine compound, an article having a polymer layer formed from the composition and a color filter formed from the composition are developed.

The present invention relates to particles of naphthalocyanine and phthalocyanine chromophores of formula (I) having a number average particle size in the range of from 10 nm to 80 nm with standard deviation being less than 40 nm, their use as almost colourless IR absorbers, for optical filter applications, especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.

##STR00001##

A composition contains a phthalocyanine derivative represented by the following formula: ##STR00001##
where R.sub.1 to R.sub.8 are independently an alkyl group, M is Si, each of R.sub.9 and R.sub.10 is any one of substituents represented by the following formulas, R.sub.11 to R.sub.13 are independently an alkyl group, and R.sub.14 to R.sub.18 are independently an alkyl group or an aryl group: ##STR00002##

Provided are a coloring composition including a colorant, a polymerizable compound, and a photopolymerization initiator, in which the colorant includes a green pigment, a content of the green pigment in a total solid content of the coloring composition is 25% by mass or more, and the green pigment includes a compound which is a compound represented by Formula (1) and has a maximal absorption wavelength in a wavelength range of 620 to 730 nm; a film formed of the coloring composition; a color filter; a solid-state imaging element; and an image display device.

##STR00001##

A phthalocyanine compound a photosensitive resin composition including the same, a photosensitive resin layer produced using the photosensitive resin composition, a color filter including the photosensitive resin layer, and a display device including the color filter, the phthalocyanine compound exhibiting a shortest wavelength of a full width at half maximum (FWHM) with respect to a maximum absorption wavelength in a range of about 600 nm to about 620 nm.

A composition contains a phthalocyanine derivative represented by the following formula:

##STR00001##

where R.sub.1 to R.sub.8 are independently an alkyl group, M is Si, each of R.sub.9 and R.sub.10 is any one of substituents represented by the following formulas, R.sub.11 to R.sub.13 are independently an alkyl group, and R.sub.14 to R.sub.18 are independently an alkyl group or an aryl group:

##STR00002##

Provided are a composition including a compound represented by Formula 1 and having a maximum absorption wavelength in a range of 600 nm or more and less than 750 nm and a polymerizable compound; as well as a cured product of the composition, a color filter including the cured product, a method for producing the color filter, a solid-state imaging element including the color filter, an image display device including the color filter, and a compound.

In Formula 1, Z's each independently represent a specific group, n represents an integer of 4 to 16, and R's each independently represent a hydrogen atom or a monovalent substituent which is different from Z, m represents an integer of 0 to 12, and m+n is 16.

##STR00001##

A dye according to an exemplary embodiment of the present invention includes a compound represented by the following Chemical Formula 1. ##STR00001##
In Chemical Formula 1, R1, R4, R5, R8, R9, R12, R13, and R16 are each independently Br or Cl, R2, R3, R6, R7, R10, R11, R14, and R15 are each independently any one of a group including Br, Cl, and a hydroxyl group, a group including an N(H)n group, and a group including an SH group, n is 1 to 3, and at least one of the R2, R3, R6, R7, R10, R11, R14, and R15 is any one of a group including a hydroxyl group, a group including an N(II)n group, and a group including an SH group.