Investigation of high Δ<i>ε</i>derivatives of the [<i>closo</i>-1-CB<sub>9</sub>H<sub>10</sub>]<sup>−</sup>anion for liquid crystal display applications
申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US05055221A1
公开(公告)日:1991-10-08
Compounds of the formula I, R.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --[Z.sup.2 --A.sup.3 ].sub.m --R.sup.2 I in which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, Z.sup.1, Z.sup.2 and m have the meaning specified in patent claim 1, are suitable as components of smectic liquid-crystalline phases.