Patent ID: 8298453

Claim:
A photochromic dye having at least two different photo-reactive groups coupled to one another, comprising: a first photo-reactive group coupled to a second photo-reactive group that is different from the first photo-reactive group, wherein the first photo-reactive group and the second photo-reactive group are independently represented by Formula I: wherein, R 1 , R 3 to R 8 , and R 10 to R 11 independently represent hydrogen, a halogen, a substituted or unsubstituted C 1-12 alkyl, a substituted or unsubstituted C 1-12 alkoxy, a substituted or unsubstituted C 1-12 alkenyl, a substituted or unsubstituted C 1-12 conjugated alkyl, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group; or the substituents together form an alkylene or alkenylene chain completing an aryl group; and wherein: R 2 and R 9 independently represent a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group; or R 2 and R 3 and R 9 and R 10 together form an alkylene or alkenylene chain completing an aryl group.