Liquid crystal material, liquid crystal composition and liquid crystal element

摘要

Disclosed is a liquid crystal material represented by the following formula [I]: R-X-A1-Y1-A2-(Y2-A3)n-Z-R*[I] wherein R is an alkyl or polyfluoroalkyl group; X is a group such as -COO-, or a single bond; n is 0 or 1; A1, A2 and A3 are each a cyclic group such as tetralin, and at least one of them has an optically active group; Y1 and Y2 are each a group such as -COO-; Z is a group such as -O-, or a single bond; and R* is an optically active group. Also disclosed are a liquid crystal composition comprising the liquid crystal material represented by the above formula, and a liquid crystal element in which the liquid crystal material is used. The liquid crystal material of the invention shows excellent liquid crystal characteristics because it has at least two optically active groups.