Patent ID: 8466239

Claim:
A polymer represented by the following Formula 4, which contains a thiophene unit and a thienylenevinylene unit: wherein, R 1 , R 3 , R 4 and R 6 are each independently hydrogen, an alkyl group having 1 to 25 carbon atoms, an alkoxy group having 1 to 25 carbon atoms, a haloalkyl group having 1 to 25 carbon atoms, or an aryl group having 6 to 30 carbon atoms, R 2 and R 5 are each independently an alkyl group having 1 to 25 carbon atoms, an alkoxy group having 1 to 25 carbon atoms, a haloalkyl group having 1 to 25 carbon atoms, or an aryl group having 6 to 30 carbon atoms, A represents wherein X 1 and X 2 are each independently S, O, or Se, R 7 , R 8 , R 9 and R 10 are each independently an alkyl group having 1 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, or a haloalkyl group having 1 to 30 carbon atoms, and R 11 and R 12 are each independently an alkyl group having 1 to 30 carbon atoms, and n is an integer ranging from 1 to 1000, m is an integer ranging from 0 to 1000, and l is an integer ranging from 1 to 1000.