OPTICALLY ACTIVE COMPOUND, PHOTOREACTION TYPE CHIRAL AGENT, LIQUID CRYSTAL COMPOSITION, METHOD FOR CHANGING SPIRAL STRUCTURE OF LIQUID CRYSTAL, METHOD FOR FIXING SPIRAL STRUCTURE OF LIQUID CRYSTAL, LIQUID CRYSTAL COLOR FILTER, OPTICAL FILTER AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To obtain an optically active compound which can optically be isomerized and is useful as a photoreaction type chiral agent that can change the spiral structure (or the twisting force or the twisting angle) of a liquid crystal by the irradiation of light, when added to a liquid crystalline compound, to obtain the photoreaction type chiral agent comprising the optically active compound, to obtain a liquid crystal composition, to provide a liquid color filter, an optical film and a recording medium each of which contains the optically active compound, to provide a method for changing the liquid crystal of the liquid crystal composition containing the optically active compound, and to provide a method for fixing the spiral structure. SOLUTION: The optically active compound represented by formula (1) [R and R are each independently H, an alkyl, an aryl, a heterocyclic group, an alkenyl or an alkynyl; R and R are each independently H, an alkyl or an alkoxycarbonyl; L is a divalent group; its binaphthyl portion has (R) or (S) axial asymmetry].