Patent ID: 7834136
Filing Date: 2010-11-16
Classification: C08G,C08L,C09B,C09K,H01L,H05B,Y02E,Y10S

Abstract:
1. A conjugated polymer (POLY1), characterized in that it comprises 1-100 mol % of units of the formula (I), where the symbols and indices have the following meanings: R is identical or different on each occurrence and is a cycloalkyl system which has from 3 to 40 carbon atoms and may be substituted or unsubstituted, an aromatic or heteroaromatic ring system which has from 2 to 40 carbon atoms and may be substituted or unsubstituted or an alkylenearyl, alkylenecycloalkyl or alkyleneheteroaryl system which has a linear or branched alkylene chain having from 1 to 16 carbon atoms and may be substituted or unsubstituted; the aryl, heteroaryl and cycloalkyl systems can also be part of a larger fused aromatic or aliphatic ring system; the possible substituents R Aryl are identical or different on each occurrence and are each an aromatic or heteroaromatic ring system which has from 2 to 40 carbon atoms and may be substituted or unsubstituted or a substituted or unsubstituted stilbenylene or tolanylene unit; the possible substituents R R R R m is identical or different on each occurrence and is 0, 1 or 2; o is identical or different on each occurrence and is 0, 1 or 2, with the proviso that o must not be 0 when m=2; r is identical or different on each occurrence and is 0 or 1, z is identical or different on each occurrence and is 0, 1, 2 or 3; the open-line bond indicates the linkage in the polymer; it should in the present case not be a methyl group and wherein formula (I) represents a bifunctional molecule if present within the polymer chain or a monofunctional molecule if present at the end of a polymer chain and the polymers have from 50 to 10,000 repeating units and a number average molecular weight (Mn) of at least 61,000.