Patent ID: 8470198

Claim:
A compound of formula I D[-(B) q -M] z I wherein D is a discotic group, or forms a discotic group together with (B) q , z is an integer from 3 to 10, B is, in each occurrence independently of one another, a bivalent group having high polarizability, selected from the group consisting of —C≡C—, —CY 1 ═CY 2 — and optionally substituted aromatic or heteroaromatic groups, Y 1,2 are independently of each other H, F, Cl, CN or R 0 , q is, in each occurrence independently of one another, 0 or an integer from 1 to 10, provided that at least one q is an integer from 1 to 10, M is a group of formula II wherein the individual radicals have, in case of multiple occurrence independently of one another, the following meanings U 1 is selected from the group consisting of the following rings including their mirror images, wherein the ring U 1 is bonded to the group —(B) q — via the axial bond, and one or two non-adjacent CH 2 groups in these rings are optionally replaced by O and/or S, and the ring U 1 is optionally substituted, Q 1,2 are independently of each other CH or SiH, Q 3 is C or Si, A 1,2 are independently of each other selected from non-aromatic, aromatic or heteroaromatic carbocylic or heterocyclic groups, which are optionally substituted, and wherein -(A 1 -Z 1 ) m -U 1 -(Z 2 -A 2 ) n - does not contain more aromatic groups than non-aromatic groups, Z 1,2 are independently of each other —O—, —S—, —CO—, —COO—, —OCO—, —O—COO—, —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 ) 3 —, —(CH 2 ) 4 —, —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—COO—, —OCO—CH═CH—, CR 0 R 00 or a single bond, R 0 and R 00 are independently of each other H or alkyl with 1 to 12 C-atoms, m and n are independently of each other 0, 1, 2, 3 or 4, with m+n>0, R 1-3 are independently of each other identical or different groups selected from H, halogen, —CN, —NC, —NCO, —NCS, —OCN, —SCN, —C(═O)NR 0 R 00 , —C(═O)X 0 , —C(═O)R 0 , —NH 2 , —NR 0 R 00 , —SH, —SR 0 , —SO 3 H, —SO 2 R 0 , —OH, —NO 2 , —CF 3 , —SF 5 , P-Sp-, optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 40 C atoms that is optionally substituted and optionally comprises one or more hetero atoms, or denote P or P-Sp-, or are substituted by P or P-Sp-, P is a polymerizable group, Sp is a spacer group or a single bond.