| abstract |
Ferroelectric liquid crystal mixtures are based on at least 2 mixing components of general formula (I) and contain, in addition, at least one optically active dopant from one or more of the following groups: (a) optically active esters of tetrahydrofuran-2-carboxylic acid; (b) optically active aryl-2,3-epoxyalkyl ethers; (c) optically active 1,3-dioxolan-4-yl-ethers. Said mixtures possess high spontaneous polarization and permit substantial compensation of the pitch of the helix in a nematic phase. |