Patent ID: 8802813

Claim:
Compounds of formula I wherein k is, in each occurrence independently of one another, 0 or 1, with k in at least one repeating unit being 1, m is, in each occurrence independently of one another, 0 or 1, n is an integer >1, R 1 , R 2 are independently of each other straight-chain, branched or cyclic alkylene with 1 to 20, which is unsubstituted, mono- or polysubstituted by F, Cl, Br, I or CN, and wherein one or more non-adjacent CH 2 groups are optionally replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 0 —, —SiR 0 R 00 —, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —S—CO—, —CO—S—, —SO 2 —, —CO—NR 0 —, —NR 0 —CO—, —NR 0 —CO—NR 00 —, —CY 1 ═CY 2 — or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, or a single bond, Y 1 , Y 2 are independently of each other H, F, Cl, CN or R 0 , R 0 , R 00 are independently of each other H or alkyl with 1 to 12 C-atoms, X 1 , X 2 are independently of each other a linkage group selected from the group consisting of —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —CO—NR 0 —, —NR 0 —CO—, —NR 0 —CO—NR 0 —, —OCH 2 —, —CH 2 O—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CH 2 CH 2 —, —(CH 2 ) n1 —, —(CF 2 ) n1 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —CH═CH—, —CY 1 ═CY 2 —, —CH═N—, —N═CH—, —N═N—, —CH═CR 0 —, —C≡C—, —CH═CH—CO—O—, —O—CO—CH═CH—, —CR 0 R 00 — and a single bond, n1 is 1, 2, 3, 4, 5 or 6, B 1 , B 2 are independently of each other a bivalent group having high polarisability selected from the group consisting of —C≡C—, —CY 1 ═CY 2 —, optionally substituted aromatic or heteroaromatic groups, and combinations of the aforementioned, U 1 , U 2 are independently of each other H or a monovalent group of formula II, wherein the asterisk denotes the linkage to the adjacent group B 1 or B 2 , respectively R 3 , R 4 are independently of each other straight-chain, branched or cyclic alkyl with 1 to 20, which is unsubstituted, mono- or polysubstituted by F, Cl, Br, I or CN, and wherein one or more non-adjacent CH 2 groups are optionally replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 0 —, —SiR 0 R 00 —, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —S—CO—, —CO—S—, —SO 2 —, —CO—NR 0 —, —NR 0 —CO—, —NR 0 —CO—NR 00 —, —CY 1 ═CY 2 — or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, or a single bond, X 3 , X 4 independently of each other have one of the meanings of X 1 , Z 1 has in each occurrence independently of one another one of the meanings of X 1 , o is 0, 1, 2, 3, 4 or 5, G has one of the meanings of R 1 or is a bivalent group of formula III —X 5 -A 1 -(Z 2 -A 2 ) p -X 6 — III X 5 , X 6 independently of each other have one of the meanings of X 1 , A 1 , A 2 are independently of each other a carbocylic, heterocyclic, aromatic or heteroaromatic group, which is optionally substituted, Z 2 has in each occurrence independently of one another one of the meanings of X 1 , and p is 0, 1, 2 or 3.