| abstract |
(57) Abstract: A phenylacetylene compound having a large refractive index anisotropy, being stable, being easily mixed with other liquid crystals, and being usable as a material constituting a liquid crystal element such as an STN liquid crystal element or a PDLC liquid crystal element. And a liquid crystal composition and a liquid crystal element using the same. A phenylacetylene compound represented by the formula (1), a liquid crystal composition and a liquid crystal element using the same. Embedded image (A 1 -A 12 : independently H, F, etc., one of which may be an alkyl group or an alkoxy group optionally substituted by F, B: Is shown. R 1 : a C1-12 alkyl group optionally substituted by F, R 2 : H, F, CN, SF 5 , NCS, etc., q Represents 0 or 1. ) |