Patent ID: 7947382

Claim:
Polymers containing at least 5 mol % of units of the formula (1) where the symbols and indices used have the following meaning: R is on each occurrence, identically or differently, H, a straight-chain, branched or cyclic alkyl chain having 1 to 40 C atoms, which may be substituted by R 1 , and in which, in addition, one or more non-adjacent C atoms may be replaced by N—R 1 , O, S, O—CO—O, CO—O, —CR 1 ═CR 1 — or —C≡C—, with the proviso that the heteroatoms are not bonded directly to the phenanthrene unit, and in which, in addition, one or more H atoms may be replaced by F, Cl, Br, I or CN, or an aromatic or heteroaromatic ring system having 2 to 40 C atoms, which may also be substituted by one or more radicals R 1 , or a combination of a plurality of these systems; the two radicals R here may also form a further mono- or polycyclic, aliphatic ring system with one another; with the proviso that at least one of the two radicals R is not equal to H; X is on each occurrence, identically or differently, —CR 1 ═CR 1 —, —C≡C— or N—Ar; Y is on each occurrence, identically or differently, a divalent aromatic or heteroaromatic ring system having 2 to 40 C atoms, which may be substituted by one or more radicals R 1 or unsubstituted; R 1 is on each occurrence, identically or differently, H, a straight-chain, branched or cyclic alkyl or alkoxy chain having 1 to 22 C atoms, in which, in addition, one or more non-adjacent C atoms may be replaced by N—R 2 , O, S, O—CO—O, CO—O, —CR 2 ═CR 2 —, —C≡C— and in which, in addition, one or more H atoms may be replaced by F, Cl, Br, I or CN, or an aryl, heteroaryl, aryloxy or heteroaryloxy group having 5 to 40 C atoms, which may also be substituted by one or more non-aromatic radicals R 1 ; two or more of the radicals R 1 here may also form a ring system with one another and/or with R; or F, Cl, Br, I, CN, N(R 2 ) 2 , Si(R 2 ) 3 or B(R 2 ) 2 ; R 2 is on each occurrence, identically or differently, H or an aliphatic or aromatic hydrocarbon radical having 1 to 20 C atoms; Ar is on each occurrence, identically or differently, a monovalent aromatic or heteroaromatic ring system having 2 to 40 C atoms, which may be substituted by R 1 or unsubstituted; n is on each occurrence, identically or differently, 0 or 1; m is on each occurrence, identically or differently, 0, 1 or 2; the dashed bond here as denotes the link in the polymer; it is not intended to represent a methyl group here; wherein the further structural elements are used as backbone, selected from the classes of the 4,5-dihydropyrene derivatives, 4,5,9,10-tetrahydropyrene derivatives, fluorene derivatives, 9,9′-spirobifluorene derivatives, 9,10-dihydrophenanthrene derivatives, 5,7-di-hydrodibenzoxepine derivatives and cis- and trans-indenofluorene derivatives.