Synthesis and transition properties of novel dimesogenic compounds possessing cis‐1, 4‐dioxa‐2‐butene as a linking group

Abstract

We have designed novel liquid crystalline compounds in which two mesogenic units are connected via cis‐2‐buten‐1,4‐diol. We prepared cis‐4‐{6‐[4‐(4‐cyanophenyl)phenyloxy]hexyloxy}‐1‐{6‐[4‐(4‐methyloxy)phenyloxy]hexyloxy}‐2‐butene (6OCMBCB), cis‐1,4‐bis{6‐[4‐(4‐cyanophenyl)phenyloxy]hexyloxy}‐2‐butene (6OCCBCB) and cis‐1,4‐bis{6‐[4‐(4‐methyloxy)phenyloxy]hexyloxy}‐2‐butene (6OMMBCB), and investigated their transition properties. 6OCMBCB and 6OCCBCB exhibited nematic phases whereas 6OMMBCB showed no liquid crystalline phase. We discuss the effects of the mesogenic structure and linkage group on the transition behaviour of the dimesogenic compounds.

Acknowledgement

This work was partly supported by Aomori Prefecture Collaboration of Regional Entities for the Advancement of Technological Excellence, JST and a Grant for Priority Research Designated by the President of Hirosaki University.