Patent ID: 8226757

Claim:
A phthalocyanine dye represented by the general structure (II): wherein: X is OH, Cl, Br, F, an alkoxy group, a substituted alkoxy group, an acetyl group, a substituted acetyl group, or OSO 3 M 2 ; M is a metal ion selected from the group consisting of In, Y, Sc, Ga, Tl, and Al; R 1 is selected from the group consisting of O, CO, COO, C n H 2n wherein n is from 1 to 4, NH, CONH, S, SO 2 , and SO 2 NH; R 2 is H, an alkyl group, a substituted alkyl group, or a monovalent organic group selected from the group consisting of an alkoxy group and an aryloxy group; M 2 is independently selected from the group consisting of H and a monovalent metal cation, the monovalent cation being Na + , K + , or N(R 3 ) 4 + ; and R 3 is independently selected from the group consisting of H, an alkyl group, a substituted alkyl group, an aryl group, and a substituted aryl group.