摘要:
To provide a chiral compound having large helical twisting power, a low melting point and good compatibility with other liquid-crystal compounds; and a liquid-crystal composition an optically isotropic liquid-crystal phase composed of the chiral compound and an achiral liquid-crystal component according to the invention, having a low drive voltage and good storage stability. The liquid-crystal composition is composed of at least one chiral compound represented by general formula (K1) or (K2) and at least one achiral liquid-crystal component:
(wherein, in formulas (K1) and (K2), R k1 is, for example, alkyl having 1 to 5 carbons, R k2 is, for example, alkyl having 1 to 20 carbons, ring A k1 is, for example, 1,4-phenylene, X k1 is, for example, a single bond, Y k1 is, for example, -(CH 2 ) n -, n is an integer from 1 to 20, Z k1 is, for example, a single bond, nk1 is, for example, an integer from 2 to 4, and nk1 and nk2 are, for example, an integer from 0 to 2.).
摘要:
A liquid crystal medium having an optically isotropic liquid crystal phase is described, which has stability to heat, light and so on, a broad temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy. A liquid crystal composition is described, which includes an achiral component T and a chiral dopant and exhibits an optically isotropic liquid crystal phase. The achiral component T contains, as its first component, at least one compound selected from compounds represented by formula (1),
wherein R 1 is C 1-20 alkyl, the rings A 1 to A 6 are 1,4-phenylene, Z 1 to Z 7 are single bonds, Y 1 and Y 2 are fluorine; X 1 is halogen, and i, j, k, m, n, p and q are independently 0 or 1.
摘要:
The purpose of the present invention is to achieve a composition for forming a low dielectric constant resin which is suitable for use in a substrate for radar, next-generation communication devices and the like using higher frequencies, while having high heat dissipation properties. The present invention enables the achievement of a polymerizable composition, which is able to be molded by a solution process, while exhibiting thermal conductivity and low dielectric properties lower than those of conventional liquid crystal polymers, by curing a polymerizable polycyclic compound that has less conjugates or polar groups, while exhibiting higher linearity or symmetry of each molecule.
摘要:
To provide a chiral compound having large helical twisting power, a low melting point and good compatibility with other liquid-crystal compounds; and a liquid-crystal composition an optically isotropic liquid-crystal phase composed of the chiral compound and an achiral liquid-crystal component according to the invention, having a low drive voltage and good storage stability. The liquid-crystal composition is composed of at least one chiral compound represented by general formula (K1) or (K2) and at least one achiral liquid-crystal component: (wherein, in formulas (K1) and (K2), R k1 is, for example, alkyl having 1 to 5 carbons, R k2 is, for example, alkyl having 1 to 20 carbons, ring A k1 is, for example, 1,4-phenylene, X k1 is, for example, a single bond, Y k1 is, for example, -(CH 2 ) n -, n is an integer from 1 to 20, Z k1 is, for example, a single bond, nk1 is, for example, an integer from 2 to 4, and nk1 and nk2 are, for example, an integer from 0 to 2.).