Patent ID: 7541425

Claim:
A monomer, oligomer or polymer of formula I -[(A) a -(B) b —(C) c -(D) d ] n - I wherein A and C denote independently of each other a group of formula II R 1 is, in each occurrence independently of one another, halogen, or straight chain, branched or cyclic alkyl with 1 to 20 C-atoms, which is unsubstituted, mono- or poly-substituted by F, Cl, Br, I or CN, 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 —, —CO—, —COO—, —OCO—, —OCO—O—, —SO 2 —, —S—CO—, —CO—S—, —CH═CH— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, or R 1 is optionally substituted heteroaryl or P—Sp—, R 2 is H or —C≡C—R 3 , or is halogen, or straight chain, branched or cyclic alkyl with 1 to 20 C-atoms, which is unsubstituted, mono- or poly-substituted by F, Cl, Br, I or CN, 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—, —COO—, —OCO—, —OCO—O—, —SO 2 —, —S—CO—, —CO—S—, —CH═CH— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, or is optionally substituted aryl or heteroaryl or P-Sp-, R 3 is H, halogen, or straight chain, branched or cyclic alkyl with 1 to 20 C-atoms, which is unsubstituted, mono- or poly-substituted by F, Cl, Br, I or CN, 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—, —COO—, —OCO—, —OCO—O—, —SO 2 —, —S—CO—, —CO—S—, —CH═CH— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, or is optionally substituted aryl or heteroaryl or P-Sp-, R 0 and R 00 are independently of each other H or alkyl with 1 to 12 C-atoms, P is a polymerizable or reactive group, Sp is a spacer group or a single bond, B and D are independently of each other —CX 1 ═CX 2 —, —C≡C—, or optionally substituted arylene or heteroarylene, X 1 and X 2 are independently of each other H, F, Cl or CN, a, b, c, d are independently of each other 0 or 1, with a +b+c+d>0, and wherein in at least one recurring unit [(A) a -(B) b —(C) c -(D) d ] at least one of a and c is 1, and n is an integer ≧1, and wherein the recurring units [(A) a -(B) b —(C) c —(D) d ] are identical or different.