Patent ID: 8173766

Claim:
Conjugated polymer comprising one or more identical or different repeating units of formula I wherein X 1 and X 2 denote independently of each other S, Se or —CR 1 ═CR 2 —, R 1-4 are identical or different groups independently of each other 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 is in each occurrence independently of one another are an optionally substituted aryl or heterorayl group, —CY 1 ═CY 2 — or —C≡C—, Y 1 and Y 2 are independently of each other H, F, Cl or CN, m is in each occurrence independently of one another 0, 1, 2, 3 or 4.