申请人:3M Innovative Properties Company
公开号:US06030547A1
公开(公告)日:2000-02-29
Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion comprising (i) at least one chiral center, which can optionally be heteroatom-substituted; (ii) a terminal fluoroalkyl, fluoroether, perfluoroalkyl, or perfluoroether group; and (iii) an alkylene or fluoroalkylene group optionally containing at least one caternary ether oxygen atom; (b) a chiral or achiral terminal portion consisting of a hydrocarbon or hydrocarbon ether group, and, when chiral, comprising at least one chiral center, which can optionally be heteroatom-substituted; and (c) a central core connecting the terminal portions; the alkylene or fluoroalkylene group of the chiral fluorochemical terminal portion having at least 3 in-chain atoms and being located between the chiral center of the chiral fluorochemical terminal portion and the central core. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.
含氟手性液晶化合物包括:(a)手性氟化学末端部分,包括(i)至少一个手性中心,可以选择性地被杂原子取代;(ii)末端氟烷基,氟醚基,全氟烷基或全氟醚基;以及(iii)一个含有至少一个链间醚氧原子的烷基或氟烷基;(b)由烃基或烃基醚基组成的手性或非手性末端部分,当为手性时,包括至少一个手性中心,可以选择性地被杂原子取代;以及(c)连接末端部分的中心核心;手性氟化学末端部分的烷基或氟烷基具有至少3个链内原子,并位于手性氟化学末端部分的手性中心和中心核心之间。这些化合物具有液晶相或潜在液晶相,例如在液晶显示器件中有用。