Patent ID: 7161010

Claim:
A compound represented by formula (III): wherein Z 1 represents an atomic group necessary to form thiazole; Z 2 represents an atomic group selected from the group consisting of a furan ring and a thiophene ring which are condensed to a benzo ring to form a tetracyclic ring; R 2 represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; L 1 and L 2 each represents a methine group; p 1 represents 0; V 1 represents a substituent selected from a halogen atom, a mercapto group, a cyano group, a carboxyl group, a phosphoric acid group, a sulfo group, a hydroxyl group, a carbamoyl group having from 1 to 10 carbon atoms, a sulfamoyl group having from 0 to 10 carbon atoms, a nitro group, an alkoxyl group having from 1 to 20 carbon atoms, an aryloxy group having from 6 to 20 carbon atoms, an acyl group having from 1 to 20 carbon atoms, an acyloxy group having from 1 to 20 carbon atoms, an acylamino group having from 1 to 20 carbon atoms, a sulfonyl group having from 1 to 20 carbon atoms, a sulfinyl group having from 1 to 20 carbon atoms, a sulfonylamino group having from 1 to 20 carbon atoms, an amino group, a substituted amino group selected from methylamino, dimethylamino, benzylamino, anilino, and diphenylamino, an ammonium group having from 0 to 15 carbon atoms, a hydrazino group having from 0 to 15 carbon atoms, a ureido group having from 1 to 15 carbon atoms, an imido group having from 1 to 15 carbon atoms, an alkylthio group having from 1 to 20 carbon atoms, an arylthio group having from 6 to 20 carbon atoms, an alkoxycarbonyl group having from 2 to 20 carbon atoms, an aryloxycarbonyl group having from 6 to 20 carbon atoms, an unsubstituted alkyl group having from 1 to 18 carbon atoms, a substituted-alkyl group selected from hydroxymethyl, trifluoromethyl, benzyl, carboxyethyl, ethoxycarbonylmethyl, and acetylaminomethyl, an unsaturated hydrocarbon group having from 2 to 18 carbon atoms, an unsubstituted aryl group having from 6 to 20 carbon atoms, a substituted aryl group selected from p-carboxyphenyl, p-nitrophenyl, 3,5-dichlorophenyl, p-cyanophenyl, m-fluorophenyl and p-tolyl, an unsubstituted heterocyclic group having from 1 to 20 carbon atoms, and a methylpyridyl group; Q 1 represents a methine group or a polymethine group necessary to form a methine dye; M 1 represents an electric charge balancing counter ion; and m 1 represents a number of from 0 to 10 necessary to neutralize the electric charge of the molecule; and n represents 0, 1 or 2, and when n represents 2, a plurality of V 1 may be the same or different.