Patent ID: 8865861

Claim:
A polymer comprising a structure represented by formula 1: wherein X and Y are independently selected from O, S, or Se; R 5 and R 3 is an aryl group containing from about 2 to about 36 carbon atoms, or a heteroaryl group containing from about 2 to about 30 carbon atoms and may be optionally substituted; R 4 is an alkene, alkyne, or an aryl group containing from about 2 to about 36 carbon atoms, or a heteroaryl group containing from about 2 to about 30 carbon atoms and may be optionally substituted; R 1 and R 2 are the same or different, and are selected from the group comprising a hydrogen, an alkyl group (linear or branched), a substituted alkyl group, an alkoxy group, an alkylthio group, an aryl group, a substituted aryl group; a, b, and c are independently integers from 0 to 5; and n is the number of repeat units from about 2 to about 5000; wherein R 4 is a substituted or unsubstituted alkene and b is 1 or 2.