Patent ID: 8138303

Claim:
A polymer comprising a repeating unit(s) of the formula wherein A is a 5-, 6-, or 7-membered heteroaromatic ring, containing at least one heteroatom selected from nitrogen, oxygen and sulfur, when A is 5-membered ring, A contains not more than 2 heteroatom, R a , R 1 , R 2 , R 3 , R 4 , R 1′ , R 2′ , R 3′ and R 4′ are independently of each other hydrogen, halogen, or an organic substituent, or R a , R 1 , R 2 , R 3 , R 4 , R 1′ , R 2′ , R 3′ and R 4′ , if possible, together form an aromatic, or heteroaromatic ring, or ring system, which can optionally be substituted, R 7 is halogen, or an organic substituent, wherein two or more substituents R 7 in the same molecule may have different meanings, or can form together an aromatic, or heteroaromatic ring, or ring system, wherein at least one of R a , R 1 , R 2 , R 3 , R 4 , R 1′ , R 2′ , R 3′ and R 4′ is a group R 10 , wherein R 10 is a group -(Sp) x1 -[PG′]<, wherein Sp is a spacer unit, PG′ is a group derived from a polymerisable group selecting from —C(R 44 )═CH 2 , —NHC(O)—C(R 45 )═CH 2 , —OCH 2 CH 2 OC(O)—C(R 45 )═CH 2 , —OC(O)—C(R 45 )═CH 2 , —C(O)—C(R 46 )═CH 2 , —C≡C—, —C≡, —OCH(CH 2 CH 2 CH═CH 2 ) 2 ; C 5 -C 8 cycloalkenyl, a substituted or unsubstituted bicycloalkenyl group having 5 to 30 carbon atoms, wherein s is an integer from 1 to 6, m1 is an integer from 1 to 6, R 6 is hydrogen, or C 1 -C 20 alkyl, R 44 is hydrogen, or C 1 -C 4 alkyl, or halogen, R 45 is hydrogen, C 1 -C 4 alkyl, or halogen, and R 46 is hydrogen, C 1 -C 4 alkyl, or C 6 -C 12 aryl, or PG′ is a group derived from a polymerisable group wherein AHG is an aromatic, or heteroaromatic residue R 211 and R 212 are independently of each other H, halogen, —C≡CH, boronic acid, or boronic esters, —Mg-Hal, —Zn-Hal, —Sn (R 213 ) 3 , wherein Hal is halogen, and R 213 is C 1 -C 18 alkyl, R 214 and R 214 ′ are independently of each other H, C 1 -C 18 alkyl, C 1 -C 18 alkyl which is interrupted by D, C 1 -C 18 perfluoroalkyl, C 1 -C 18 alkoxy, C 1 -C 18 alkoxy which is interrupted by D, or C 7 -C 25 aralkyl, x1 is 0, or 1, and x is 0, or an integer of 1 to 4.