Provided are novel acetylene compounds which are useful as a component for a liquid crystal composition used for a liquid crystal element, a liquid crystal composition containing said compounds and a liquid crystal element using said liquid crystal composition. The acetylene compound is represented by Formula (1):
n-CmH2m+1—C≡C—A—Z1—B—Y1—R1 (1)
wherein m represents an integer of 2 to 24; R1 represents a linear or branched alkyl group, a linear or branched alkoxyalkyl group, a linear or branched alkenyl group, or a linear or branched alkenyloxyalkyl group each of which may be substituted with a halogen atom; R1 may have an asymmetric carbon atom, and the asymmetric carbon atom may be optically active; A and B represents a cyclic group such as a phenylene group, a biphenylene group, a naphthylene group and the like each of which may be substituted with a halogen atom.
提供了一种新型
乙炔化合物,其作为液晶元件用的液晶组合物的组分有用,液晶组合物包含该化合物,使用该液晶组合物的液晶元件。
乙炔化合物由式(1)表示:n-CmH2m+1—C≡C—A—Z1—B—Y1—R1 (1),其中m表示2到24的整数;R1表示线性或支链烷基,线性或支链烷氧基烷基,线性或支链烯基,或线性或支链烯氧基烷基,每个基团都可以用卤素原子取代;R1可以具有不对称碳原子,且该不对称碳原子可以是光学活性的;A和B表示环状基团,例如苯基团、
联苯基团、
萘基团等,每个基团都可以用卤素原子取代。