Compounds which may be used as a dopant or host in a ferroelectric chiral smectic liquid crystal mixture. The compounds are characterized in that they are derivates of an X-hydroxy carboxylic acid and contain the chiral unit (I), in which Ro may be alkyl, alkoxy, halogen, formula (II), where b may be 0 to 3 and the phenyl ring may be substituted, and a is 0 or 1. The chiral unit is combined with a range of mesogenic combinations of groups. Lactic acid derivatives are described in detail (i.e. Ro.dbd.methyl) together with various preparative routes, for example the compound formula (III), which has dopant properties in a range of hosts.
这是一篇关于在
铁电手性液晶混合物中可以用作掺杂剂或主体的化合物的文章。这些化合物的特点是它们是X-羟基
羧酸的衍
生物,并含有手性单元(I),其中Ro可以是烷基,烷氧基,卤素,公式(II),其中b可以为0至3,苯环可以被取代,a为0或1。手性单元与一系列介向基团的组合相结合。详细描述了
乳酸衍
生物(即Ro.dbd.methyl),以及各种制备路线,例如化合物公式(III),它在一系列主体中具有掺杂特性。