Novel chiral liquid crystalline compounds having an optically active group are of the general formula
wherein R is a linear or branched alkyl of 1 to 18 C; ℓ is 0 or 1; X is COO or -0- in the case of ℓ = 0 and COO, -O- or -CH2- in the case of ℓ = 1; and represents optically active carbon. and when used in a display element bring about a higher response velocity. The racemic compounds are also useful in liquid crystal compositions.
具有光学活性基团的新型手性液晶化合物通式如下
其中 R 是 1 至 18 C 的直链或支链烷基;ℓ 是 0 或 1;X 在 ℓ = 0 的情况下是 COO 或 -0-,在 ℓ = 1 的情况下是 COO、-O- 或 -
CH2-;并且代表光学活性碳。外消旋化合物还可用于液晶组合物中。