Patent ID: 7214752

Claim:
A homopolymer formed from a monomer represented by the following formula, wherein, R is H or methyl, § denotes a member selected from the group consisting of oxygen, sulfur and NR 1 , T denotes a (CH 2 ) n radical, optionally interrupted by a member selected from the group consisting of —O—, —NR 1 — and —OSi(R 1 ) 2 ,O—, and optionally substituted by methyl or ethyl, R 1 representing a member selected from the group consisting of hydrogen and C 1 –C 4 alkyl, n denotes the number 2, 3 or 4, Q denotes a divalent linking group, and E denotes an at least trinuclear group having nuclei selected from the group consisting of: 2,6-naphthylene; 1,4-phenylene; 6-membered heterocyclic radicals selected from the group consisting of 5-membered carbocyclic ring systems containing 3 hetero atoms selected from the group consisting of S, N and O; and 5-membered heteroaromatic ring systems containing 3 hetero atoms selected from the group consisting of S, N and O, each aromatic nuclei and each heterocyclic nuclei of said at least trinuclear group E is optionally and independently substituted with at least one member selected from the group consisting of C 1 –C 12 alkyl, C 1 –C 12 alkoxy, hydroxy, halogen, amino, nitro, trifluoromethyl, cyano, carboxy, COOR 2 (R 2 being selected from the group consisting of C 1 –C 6 alkyl, cyclohexyl, benzyl and phenyl), C 5 –C 12 cycloalkyl, C 1 –C 12 alkylthio, C 1 –C 6 alkylsulphonyl, C 6 –C 12 arylsulphonyl, aminosulphonyl, C 1 –C 6 alkylaminosulphonyl, phenylaminosulphonyl, aminocarbonyl, C 1 –C 6 alkylamino-carbonyl, phenylaminocarbonyl, C 1 –C 4 alkylamino, di-C 1 –C 4 alkylamino, phenylamino, C 1 –C 5 acylamino, C 1 –C 4 alkylsulphonylamino, mono-C 1 –C 4 alkylaminocarbonylamino, di-C 1 –C 4 alkylaminocarbonylamino, C 1 –C 4 alkoxycarbonylamino and trifluoromethyl-sulphonyl, and said at least trinuclear group E includes at least one polyvalent linking group, which is capable of undergoing a photo-induced change in configuration, selected from the group consisting of