Patent ID: 7368510

Claim:
An organic semiconductor copolymer comprising: a poly(oligothiophene-arylene) derivative having a chemical formula: wherein x is an integer from 3 to 12, y is an integer from 1 to 4 with x>y, R 1 is a hydrogen atom, a C 1-20 linear, branched, or cyclic alkyl group, a C 1-20 alkoxyalkyl group or a C 1-16 linear, branched, or cyclic alkoxy group, Ar is a C 2-30 heteroaromatic structure comprising at least one electron-withdrawing imine nitrogen atom in the heteroaromatic structure or a thiophene-arylene comprising the C 2-30 heteroaromatic structure, and n is an integer from 4 to 200.