发明授权
- 专利标题: Liquid crystal compounds having a chiral fluorinated terminal portion
- 专利标题(中): 具有手性氟化末端部分的液晶化合物
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申请号: US08998400申请日: 1997-12-24
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公开(公告)号: US06309561B1公开(公告)日: 2001-10-30
- 发明人: Masakazu Hasegawa , Michael P. Keyes , Marc D. Radcliffe , Patricia M. Savu , Daniel C. Snustad , Terence D. Spawn
- 申请人: Masakazu Hasegawa , Michael P. Keyes , Marc D. Radcliffe , Patricia M. Savu , Daniel C. Snustad , Terence D. Spawn
- 主分类号: C09K1934
- IPC分类号: C09K1934
摘要:
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 catenary 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.
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