Patent ID: 7714098

Claim:
A monomer, oligomer, or polymer compound comprising a structure according to formula I ([A] a [B] b [C] c [D] d ) n - I wherein A and C are each, independently of one another, B and D are each, independently of one another, —CX 1 ═CX 2 —, or —C≡C—, or an arylene or heteroarylene group that is optionally substituted with one or more groups R 1 , R 1 and R 2 are each, independently of one another, H or halogen, or an aryl or heteroaryl group which is optionally substituted, or a straight chain, branched or cyclic alkyl with 1 to 20 C-atoms and which is unsubstituted or mono- or polysubstituted by F, Cl, Br, I or CN, and wherein optionally one or more non-adjacent CH 2 groups are replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 0 —, —SiR 0 R 00 —, —CO—, —COO—, —OCO—, —O—CO—O—, —S—CO—, —CO—S—, —CX 1 ═CX 2 — or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, X 1 and X 2 are each, independently of one another, H, F, Cl or CN, R 0 and R 00 are each, independently of one another, H, alkyl with 1 to 12 C-atoms, or aryl, a and c are each, independently of one another, 0 or 1, wherein in at least one group [(A) a -(B) b -(C) c (D) d ] a and/or c is 1, b and d are each, independently of one another, 0, 1 or 2, and n is an integer from 1 to 10,000, wherein in case n>1 the groups [(A) a -(B) b -(C) c -(D) d ] can be identical or different, and with the provisos that: a) said compound comprise at least one group A or C that is substituted by groups R 1 and R 2 each having at least 3 C-atoms, and/or b) said compound comprise at least one group B or D that is thiophene-2,5-diyl or selenophene-2,5-diyl substituted in 3- and/or 4-position by a group R 1 being different from H; and with the proviso that said compound does not contain a thieno[2,3-b]thiophene group.