| abstract |
An optical recording medium dye has the following structure (1): n n n wherein A is an aromatic group or a polycyclic aromatic group; B 1 is a hydrogen atom, a hydroxyl group, an alkyloxy group, a halogen, a nitro group, a nitroso group, a substituted and unsubstituted amine group, a substituted or unsubstituted sulfamoyl group (—SO 2 NH 2 ); R 1 , R 2 are same or different, substituted or unsubstituted, straight chain or branched alkyl group, alkenyl group, aralkyl group, alkoxycarbonyl group, alkoxycarboxyl group, alkoxyl group, alkyl hydroxyl group, alkylamino group, alkylcarbamoyl group, alkylsulfamoyl group, alkylalkoxyl group, alkyl halide group, alkylsulfonyl group or alkylcarboxyl group; and X − is anion. |