Patent ID: 7892702

Claim:
A dye represented by Structural Formula (I): wherein: R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or —Si(R 5 ) 3 ; R 2 , R 3 , and R 4 are each independently —H, a halogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group; each R 5 is independently a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl or a substituted or unsubstituted heteroaryl group; and rings A and B are independently substituted or unsubstituted.