Novel ferroelectric liquid crystals based on fused thieno[3,2‐<i>b</i>]furan and thieno[3,2‐<i>b</i>]thiophene cores

Abstract

Several series of new benzofused thieno[3,2‐b]furan‐ and thieno[3,2‐b]thiophene‐based derivatives have been synthesized and their mesomorphic properties investigated. All the studied compounds exhibit a SmC* phase with very wide temperature interval. Additionally, some types of the compounds show the cholesteric, SmA or blue phase. In the ferroelectric SmC* phase we evaluated physical properties of relevance for possible applications.