Patent ID: 7658868

Claim:
A polymer having the following formula: wherein, A represents independently for each occurrence thiophene; x is independently for each occurrence an integer from 2 to 8 inclusive; B represents wherein R represents independently for each occurrence H, alkyl, alkaryl, alkenyl, alkynyl, silyl, alkylthio, imino, amido, phosphoryl, phosphonate, phosphine, phosphonamide, carboxyl, carboxamide, keto, alkylsulfonyl, arylsulfonyl, selenoalkyl, formyl, ester, heteroalkyl, cyano, guanidine, amidine, acetal, ketal, aryl, heteroaryl, aralkyl, heteroaralkyl, epoxide, hydroxamic acid, imido, oxime, sulfonamine, sulfonamide, sulfonomate, thioamide, thiocarbamate, urea, thiourea, saturated or mono or poly unsaturated fatty acid, or —(CH 2 ) m —R 80 , or two instances of R taken together represent —CH 2 CH 2 OCH 2 (CH 2 OCH 2 ) y CH 2 OCH 2 CH 2 —, with the proviso that R is not methyl; R 80 represents independently for each occurrence an aryl, cycloalkyl, cycloalkenyl, heterocyclyl, or polycyclyl group; m is independently for each occurrence an integer in the range 0 to 8 inclusive; y is an integer in the range 0 to 3 inclusive; and n represents an integer from 2 to about 100.