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.

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A composite nanomaterial of ZnO impregnated by, e.g., a green copper phthalocyanine compound (CuPc) can be an efficient solar light photocatalyst for water remediation. The composite may include hollow shell microspheres and hollow nanospheres of CuPc-ZnO. CuPc may function as a templating and/or structure modifying agent, e.g., for forming hollow microspheres and/or nanospheres of ZnO particles. The composite can photocatalyze the degradation of organic pollutants such as crystal violet (CV) and 2,4-dichlorophenoxyacetic acid as well as microbes in water under solar light irradiation. The ZnO—CuPc composite can be stable and recyclable under solar irradiation.

The present invention provides a compound represented by formula (I) or formula (II) capable of reducing the color difference before and after post-baking.

##STR00001##

[In the formula (I), R.sup.1 represents a C2-C20 unsaturated hydrocarbon group optionally having a substituent; R.sup.2 represents a hydrogen atom, a C1-C20 hydrocarbon group optionally having a substituent, or a single bond connecting Z.sup.2 and R.sup.1; and Z.sup.1 and Z.sup.2 each independently represent a single bond or an oxygen atom, and in the formula (II), R.sup.3 represents a C2-C20 unsaturated hydrocarbon group optionally having a substituent; and Z.sup.3 represents a single bond or an oxygen atom].

A polymerizable phthalocyanine compound having the formula (I) or a PSMA-targeted phthalocyanine compound conjugate thereof having the formula (V).

A composite nanomaterial of ZnO impregnated by, e.g., a green copper phthalocyanine compound (CuPc) can be an efficient solar light photocatalyst for water remediation. The composite may include hollow shell microspheres and hollow nanospheres of CuPc-ZnO. CuPc may function as a templating and/or structure modifying agent, e.g., for forming hollow microspheres and/or nanospheres of ZnO particles. The composite can photocatalyze the degradation of organic pollutants such as crystal violet (CV) and 2,4-dichlorophenoxyacetic acid as well as microbes in water under solar light irradiation. The ZnO—CuPc composite can be stable and recyclable under solar irradiation.

A composite nanomaterial of ZnO impregnated by, e.g., a green copper phthalocyanine compound (CuPc) can be an efficient solar light photocatalyst for water remediation. The composite may include hollow shell microspheres and hollow nanospheres of CuPc-ZnO. CuPc may function as a templating and/or structure modifying agent, e.g., for forming hollow microspheres and/or nanospheres of ZnO particles. The composite can photocatalyze the degradation of organic pollutants such as crystal violet (CV) and 2,4-dichlorophenoxyacetic acid as well as microbes in water under solar light irradiation. The ZnO—CuPc composite can be stable and recyclable under solar irradiation.

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##

The present invention provides an optical purification layer, an edge-lit backlight module, and a polarizer. The material of the optical purification layer includes an organic absorbing dye for absorbing cyan light and yellow orange light having a wavelength range of 560-610 nm. The edge-lit backlight module includes a back plate, a reflector, a light guide plate, an edge light source, and an optical film module stacked, wherein the optical purification layer is provided between the edge light source and the light guide plate, or the optical purification layer is further provided between the light guide plate and the diffuse reflection layer, or the light guide plate includes a material of the optical purification layer.

A composite nanomaterial of ZnO impregnated by, e.g., a green copper phthalocyanine compound (CuPc) can be an efficient solar light photocatalyst for water remediation. The composite may include hollow shell microspheres and hollow nanospheres of CuPc-ZnO. CuPc may function as a templating and/or structure modifying agent, e.g., for forming hollow microspheres and/or nanospheres of ZnO particles. The composite can photocatalyze the degradation of organic pollutants such as crystal violet (CV) and 2,4-dichlorophenoxyacetic acid as well as microbes in water under solar light irradiation. The ZnOCuPc composite can be stable and recyclable under solar irradiation.

The present invention provides a color photoresist composition, including: 5-8 parts by weight of a pigment; 5-8 parts by weight of an alkali soluble resin; 5-8 parts by weight of a phthalocyanine semi-sandwich dye; 0.2-0.6 parts by weight of a photoinitiator; 70-85 parts by weight of a photoresist solvent; and 0.1-0.2 parts by weight of an additive.