Patent ID: 8822634

Claim:
A copolymer comprising anthracene and benzoselenadiazole, which is represented by formula (I), wherein n is a natural number from 10 to 1000, a is 1 or 2, b is 0, 1 or 2; X, Y are Se or SO 2 , N—R 4 , R 5 —Si—R 6 ; R 4 , R 5 , R 6 are selected from C 1 -C 20 straight-chain, branched-chain or cyclo alkyl or alkoxy; R 1 , R 2 are unsubstituted, monosubstituted or polysubstituted functional group Ar 1 and said functional group Ar 1 is selected from hydrogen, halogen, cyano, substituted or unsubstituted C 1 -C 40 straight-chain or branched-chain or cyclo alkyl, substituted or unsubstituted aryl or heteroaryl; R 3 , R 7 are unsubstituted, monosubstituted or polysubstituted functional group Ar 2 , and said functional group Ar 2 is selected from hydrogen, cyano, substituted or unsubstituted C 1 -C 40 straight-chain or branched-chain or cyclo alkyl, substituted or unsubstituted C 1 -C 40 alkoxy, substituted or unsubstituted C 6 -C 40 aryl, substituted or unsubstituted C 6 -C 40 aralkyl substituted or unsubstituted C 6 -C 40 aryl alkoxy.