Patent ID: 7288617
Filing Date: 2007-10-30
Classification: C07C,C08G,H01L,Y02E,Y10S

Abstract:
1. A conjugated polymer comprising recurring units of the formula (I) and recurring units of the formula (II), where the proportion of repeating units of the formula (I) and formula (II) together make up at least 20%, and the ratio of the repeating units of the formula (I) to those of the formula (II) is in the range from 1:10 to 10:1, 0 and at least one structural element which have repeating units which have structures different from those of the formula (I) or (II) and the symbols and indices have the following meanings: X is identical or different on each occurrence and is CH, CR 1 or N, Z is identical or different on each occurrence and is a single chemical bond, a CR 3 R 4 group, a CR 3 R 4 —CR 3 R 4 group, a CR 3 ═CR 4 group, O, S, N—R 5 , C═O, C═CR 3 R 4 or SiR 3 R 4 ; R 1 is identical or different on each occurrence and is a straight-chain, branched or cyclic alkyl or alkoxy chain which has from 1 to 22 carbon atoms and in which one or more nonadjacent carbon atoms is optionally replaced by N—R 5 , O, S, —CO—O—, or O—CO—O, where one or more H atoms is optionally replaced by fluorine, an aryl or aryloxy group which has from 5 to 40 carbon atoms and in which one or more carbon atoms is optionally replaced by O, S or N and which is optionally substituted by one or more nonaromatic radicals R 1 , Cl, F, CN, or N(R 5 ) 2 , where two or more radicals R 1 is optionally joined to form a ring system; R 2 is identical or different on each occurrence and is a straight-chain, branched or cyclic alkyl or alkoxy chain which has from 1 to 22 carbon atoms and in which one or more nonadjacent carbon atoms is optionally replaced by N—R 5 , O, S, —CO—O—, or O—CO—O, where one or more H atoms is optionally replaced by fluorine, an aryl or aryloxy group which has from 5 to 40 carbon atoms and in which one or more carbon atoms is optionally replaced by O, S or N and which is optionally substituted by one or more nonaromatic radicals R 1 , or CN; R 3 and R 4 are identical or different on each occurrence and are each H, a straight-chain, branched or cyclic alkyl chain which has from 1 to 22 carbon atoms and in which one or more nonadjacent carbon atoms is optionally replaced by N—R 5 , O, S, —CO—O—, or O—CO—O, where one or more H atoms is optionally replaced by fluorine, an aryl group which has from 5 to 40 carbon atoms and in which one or more carbon atoms is optionally replaced by O, S or N and which is optionally substituted by one or more nonaromatic radicals R 1 , or CN; the two radicals R 3 and R 4 is optionally joined to form a ring which does not, however, lead to structures of the formula (I); R 5 is identical or different on each occurrence and is H, a straight-chain, branched or cyclic alkyl chain which has from 1 to 22 carbon atoms and in which one or more nonadjacent carbon atoms is optionally replaced by O, S, —CO—O—, or O—CO—O, where one or more H atoms is optionally replaced by fluorine, an aryl group which has from 5 to 40 carbon atoms and in which one or more carbon atoms is optionally replaced by O, S or N and which is optionally substituted by one or more nonaromatic radicals R 1 ; n is identical or different on each occurrence and is 0, 1, 2, 3 or 4; m is identical or different on each occurrence and is 0, 1, 2 or 3; o is identical or different on each occurrence and is 0, 1, 2 or 3, with the proviso that in the case of at least one unit of the formula (I), at least one index n and/or m is not.