Patent ID: 8772442

Claim:
An electronic, optical or optoelectronic device comprising a polymeric semiconductor component, the polymeric semiconductor component comprising a polymer having the formula: wherein: Ar and Ar′ are identical or different optionally substituted 5-8 membered heteroaryl groups; π and π′ are identical or different optionally substituted 11-24 membered polycyclic aryl or heteroaryl groups; X 1 and X 2 independently are selected from the group consisting of N, CH and CR 1 , provided that at least one of X 1 and X 2 is CR 1 ; X 3 is N or CR 3 ; X 4 is N or CR 4 ; R 1 is selected from selected from the group consisting of F, Cl, —C(O)R 5 , —CF 2 R 5 , and CN; R 3 and R 4 independently are selected from selected from the group consisting of H, F, Cl, —C(O)R 5 , CN, R 5 , OR 5 , and SR 5 , wherein R 5 , at each occurrence, independently is selected from selected from the group consisting of a C 1-20 alkyl group and a C 1-20 haloalkyl group; X is selected from the group consisting of O, S, and NR 6 , wherein R 6 is H or a C 1-20 alkyl group; a and b independently are 0 or 1; m and m′ are 0, 1, or 2; n and n′ are 0, 1, or 2, provided that m and m′ are 1 and/or n and n′ are 1, and/or at least one of a and b is 1; x and y are real numbers representing mole fractions, wherein 0.05≦x≦0.95, 0.05≦y≦0.95, and the sum of x and y is about 1; and wherein the polymer has a molecular weight in the range of about 3,000 to about 300,000.