Patent ID: 8709290

Claim:
Conjugated polymer comprising one or more identical or different repeating units of formula I wherein one of A 1 and A 2 is a single bond and the other is SiR 1 R 2 , one of A 3 and A 4 is a single bond and the other is SiR 3 R 4 , one of U 1 and U 2 is —CH═ or ═CH— and the other is —X—, one of U 3 and U 4 is —CH═ or ═CH— and the other is —X—, X is in each occurrence independently selected from —S— and —Se—, R 1-4 are independently of each other identical or different groups selected from H, halogen, —CN, —NC, —NCO, —NCS, —OCN, —SCN, —C(═O)NR 0 R 00 , —C(═O)X 0 , —C(═O)R 0 , —NH 2 , —NR 0 R 00 , —SH, —SR 0 , —SO 3 H, —SO 2 R 0 , —OH, —NO 2 , —CF 3 , —SF 5 , P-Sp-, optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 40 C atoms that is optionally substituted and optionally comprises one or more hetero atoms, P is a polymerisable group, Sp is a spacer group or a single bond, X 0 is halogen, R 0 and R 00 are independently of each other H or an optionally substituted carbyl or hydrocarbyl group optionally comprising one or more hetero atoms, Ar 1 and Ar 2 are independently of each other an optionally substituted aryl or heteroaryl group, —CY 1 ═CY 2 — or —C≡C—, Y 1 and Y 2 are independently of each other H, F, Cl or CN, m1 and m2 are independently of each other 0 or 1, 2, 3 or 4.