The present invention provides a conductive liquid-crystal material having features including that, for example, excellent conductivity is exhibited at a low threshold voltage of about 5 V even in a room temperature range, the value of resistance varies with an applied voltage, the current density rises sharply at a voltage of about 5 V, and an excellent charge mobility is exhibited, as well as a process for producing the conductive liquid-crystal material, a liquid-crystal composition which is used for the conductive liquid-crystal material, a liquid-crystal semiconductor element, and an information recording medium.
The conductive liquid-crystal material is characterized by being a liquid-crystal composition composed of at least two components having a smectic phase as a liquid-crystal phase, wherein at least one component is selected from distyryl derivatives represented by the following general formula (1) and the liquid-crystal composition comes into a solid state formed by a phase transition from the smectic phase.
(In the formula, R1 and R2 independently represent a linear or branched alkyl group or an alkoxyl group, and R1 and R2 may be the same group or different groups.)
本发明提供了一种导电液晶材料,其特点包括,在室温范围内,即使在低阈值电压约为5 V的情况下也表现出优异的导电性,电阻值随施加电压变化,电流密度在约5 V的电压下急剧上升,并表现出优异的电荷迁移率。此外,本发明还提供了制备导电液晶材料的方法、用于导电液晶材料的液晶组合物、液晶半导体元件和信息记录介质。该导电液晶材料的特征在于,它是由至少两个具有液晶相中的液晶相相变的薄层相组成的液晶组合物,其中至少一个组分选自以下通式(1)所表示的二烯基衍
生物,并且液晶组合物通过从薄层相转变而成的固态状态。 (在公式中,R1和R2分别表示线性或支链烷基或烷氧基,且R1和R2可以是相同的基团或不同的基团。)