Patent ID: 7910687
Filing Date: 2011-03-22
Classification: C08G,C09K,H01L,Y02E

Abstract:
1. A conjugated polymer containing at least 1 mol % of units of the formula (I) where the symbols and indices are each defined as follows: Ar Ar Ar-fus is the same or different at each instance and is an aromatic or heteroaromatic ring system which has at least 9 but at most 40 atoms carbon or heteroatoms in the conjugated system which is optionally substituted or else unsubstituted and which consists of at least two fused rings; the possible substituents R1 is optionally at any free position; Ar m and n are the same or different at each instance and are each 0, 1 or 2; R1 is the same or different at each instance and is a straight-chain, branched or cyclic alkyl or alkoxy chain having from 1 to 22 carbon atoms in which one or more nonadjacent carbon atoms are optionally replaced by N—R2, O, S, —CO—O—, O—CO—O and one or more hydrogen atoms are optionally replaced by fluorine, an aryl or aryloxy group having from 5 to 40 carbon atoms in which one or more carbon atoms are optionally replaced by O, S or N and which may also be substituted by one or more nonaromatic R1 radicals, or Cl, F, CN, N(R2) R2 is the same or different at each instance and is H, a straight-chain, branched or cyclic alkyl chain having from 1 to 22 carbon atoms in which one or more nonadjacent carbon atoms are optionally replaced by O, S, —CO—O—, O—CO—O and one or more hydrogen atoms is optionally replaced by fluorine, an aryl group having from 5 to 40 carbon atoms in which one or more carbon atoms are optionally replaced by O, S or N and which are optionally substituted by one or more nonaromatic R1 radicals, are excluded when the conjugated polymer contains metal complexes which enable a transfer of singlet excitons to triplet excitons and with the proviso that the polymer does not contain fluorene units and wherein the polymer contains further structural elements and said further structural elements are meta-phenylenes, 1,4-naphthylenes, 9,10-anthracenylenes, 2,7-phenanthrenylenes, 1,6-pyrenylenes, 2,7-pyrenylenes, 4,9-pyrenylenes, 2,7-tetrahydropyrenylenes, oxadiazolylenes, 2,5-thiophenylenes, 2,5-pyrrolylenes, 2,5-furanylenes, 2,5-pyridylenes, 2,5-pyrimidinylenes, 3,6- or 2,7-carbazolylenes, 5,8-quinolinylenes, spiro-9,9′-bifluorenylenes, indenofluorenylenes, stilbenzylenes, tolanylenes, bisstyrylarylenes, bis(arylacetylene)arylenes, chrysenes, naphthacenes, pentacenes, perylenes, coronenes, metal complexes which enable a transfer of singlet excitons to triplet excitons and which emit light from the triplet state, arylene-acetylene structures or larger aromatic units.