Patent ID: 8278394

Claim:
Polymer comprising >0 mol % and <40 mol % of one or more identical or different units comprising an indenofluorene group of formula I wherein one of A and A′ is a single bond and the other is CR 1 R 2 , one of B and B′ is a single bond and the other is CR 3 R 4 , 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, —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 , optionally substituted silyl, or a straight-chain, branched or cyclic alkyl with 1 to 40 C-atoms, which is unsubstituted, mono- or polysubstituted by F, Cl, Br, I or CN, and wherein one or more non-adjacent CH 2 groups are optionally replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 0 —, —SiR 0 R 00 —, —CO—, —COO—, —OCO—, —O—CO—O—, —S—CO—, —CO—S—, —SO 2 —, —CO—NR 0 —, —NR 0 —CO—, —NR 0 —CO—NR 00 —, —CX 1 ═CX 2 — or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, with R 0 and R 00 having one of the meanings given as described below and X 1 and X 2 being independently of each other H, F, Cl or CN, X 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 a single bond or denotes mononuclear or polynuclear aryl or heterorayl that is optionally substituted, m is an integer ≧1, and wherein optionally the groups R 1 and R 2 and/or the groups R 3 and R 4 form a spiro group with the adjacent fluorene moiety, with the proviso that the following polymers are excluded