Patent ID: 8679644

Claim:
A conjugated or partially conjugated polymer comprising from 0.1 mol % to 30 mol % of units of the formula (1) wherein: A is on each occurrence, identically or differently, N, P or As; X is on each occurrence, identically or differently, a divalent planar conjugated system having 6 to 40 C atoms, which comprises at least two arylene groups and which is optionally substituted by R1; Ar 1 , Ar 2 , Ar 3 , Ar 4 and Ar 5 are on each occurrence, identically or differently, an aromatic or heteroaromatic ring system having 2 to 40 C atoms, which is optionally substituted by one or more radicals R 1 , with the proviso that none of the groups Ar 1 to Ar 5 are a fused ring system if this group does not have a direct bond to the polymer chain; R 1 is on each occurrence, identically or differently, H, F, Cl, Br, I, CN, NO 2 , OH, N(R 1 ) 2 , Si(R 2 ) 3 , B(R 2 ) 2 , a straight-chain, branched or cyclic alkyl, alkoxy or thioalkoxy group having 1 to 40 C atoms, in which, in addition, one or more non-adjacent C atoms is optionally replaced by —CR 2 ═CR 2 —, —NR 2 —, —O—, —S—, —CO—O— or —O—CO—O—, where, in addition, one or more H atoms is optionally replaced by fluorine, an aryl, heteroaryl, aryloxy or heteroaryloxy group having up to 40 C atoms, in which, in addition, one or more C atoms is optionally replaced by O, S or N and which, in addition, may be substituted by one or more non-aromatic radicals R 1 ; two or more of the radicals R 1 optionally form an aliphatic or aromatic, mono- or polycyclic ring system with one another; R 2 is on each occurrence, identically or differently, H or an aliphatic or aromatic hydrocarbon radical having 1 to 20 C atoms; n is on each occurrence, identically or differently, 0, 1 or 2; the linking of the units of the formula (1) to the polymer takes place via one or two of the groups Ar 1 to Ar 5 ; with the exception of the polymer of the formula (2) wherein Ar 21 , Ar 22 , Ar 24 are each an arylene group, which may carry a substituent; Ar 25 is an arylene group or a divalent polycondensed ring group, which optionally carry a substituent; Ar 23 and Ar 26 are each an alkyl group, an aralkyl group or an aryl group, which optionally carry a substituent; m 1 is 0, 1, 2 or 3; n 1 is a natural number; and wherein said conjugated or partially conjugated polymers further comprise one or more units selected from the group consisting of spirobifluorene, fluorene, dihydrophenanthrene, cis-indenofluorene, trans-indenofluorene, dihydropyrene, and tetrahydropyrene.