| abstract |
PROBLEM TO BE SOLVED: To provide a polymerizable photoisomerized optically active liquid crystal compound having a photoisomerized azobenzene skeleton and usable as a reversibly optically writable memory material. SOLUTION: General formula (I) (A; (meth) acryl, ethoxy, phenol, isocyanate, m; 8 to 20, Y and Z: -O-, -COO-, -OCO-, -NHCO-, -CONH-, single bond, ring D, J; 1,4-phenylene, pyrimidin-2,5-diyl, pyridin- 2,5-diyl, trans-1,4-cyclohexylene, ring E, G; 1,4-phenylene, Pirimidine-2,5-diyl, pirid-2,5-diyl, n and k; 0, 1, R 1 ; -CH 3 , -C 2 H 5 , -CHF 2 , -CF 3 , -F, -CN, R 2 ; C A polymerizable optically active photoisomerizable liquid crystal compound represented by the formula: 2 to 18 alkyl, R 1 = R 2 ≠ —C 2 H 5 , C * ; (R) or (S) configuration irregular carbon). |