COMPOUND HAVING PHENYLACETYLENE STRUCTURE IN ITS SKELETAL STRUCTURE, LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME AND LIQUID CRYSTAL ELEMENT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a new compound that has a large refractometoric anisotropy, can easily be mixed with other liquid crystals, is excellent in photostability and has a enough short absorption wavelength at an ultraviolet area to be practically out of the question, and also provide a liquid crystal composition and a liquid crystal element which can be used for an optical shutter, a displaying element and the like.;SOLUTION: This compound is a compound represented by formula (1) having a phenylacetylene structure with a skeletal structure, where HOMO energy difference ΔE between each of the parts represented by formulas (1-1) to (1-3) in formula (1) found by the molecular orbital method calculation is 0.3 electron volt or larger and a polarizability anisotropy Δα found in the same manner as the above for the molecule represented by formula (1) is 500 (atomic unit) or larger. In formulas, A¹ to A⁴ are independently H, F or a 1-10C alkyl or alkoxy group which may be substituted with F, and P¹ and P² are each a structure which satisfies the conditions of the HOMO energy and polarizability.;COPYRIGHT: (C)2003,JPO