To obtain a polymer having an optically addressable side chain group capable of inducing a high birefringence by irradiation, and suitable for the formation of a constituent for optically storing an existing information and as a constituent capable of optically switching.
This polymer having optically addressable side chain group has a main chain working as a trunk and side chains branching therefrom, forming covalent bonds therewith and represented by formula I and II [S1 and S2 are each 0, S or NR0 (R0 is H or a 1-4C alkyl); T1 and T2 are each (CH2)n; Q2 and Q2 are each a single bond, O, COO, OCO, etc.; A is a unit capable of absorbing the irradiated electromagnetic wave; M is a mesogenic unit having anisotropic shape; (n) is 2-12] and A has ≥0.2 absorptivity E obtained by six respective measurement of the formula A-Q1H and AQ1T1S1H such as a measurement about A-Q1H or AQ1T1S1H at an available lowest concentration in a solvent having an available lowest polarity and a measurement about a standard material at an available maximum concentration in the same solvent.
CLAUSSEN UWE DR
KOSTROMINE SERGUEI DR
NEIGL RALF DR
RUEBNER JOACHIM DR
RUHMANN RALF DR
Next Patent: COPOLYMER CONTAINING ETHYLENE AND FLUORINE