PB16 Stabilization of ferroelectricity in liquid crystalline ureas by introducing aromatic groups to the peripheral parts of the columns

Abstract

For achieving realization of ferroelectric columnar mesophase, we synthesized liquid crystalline urea-compounds. The compounds exhibited rectangular columnar and smectic A liquid crystal phases. We investigated their mesophases and structures by polarized optical microscopy (POM), differential scanning calorimetry (DSC), and one- and two-dimentional X-ray diffractions (XRD). In addition, we investigated their ferroelectric switching behaviors by applying a triangular wave voltage. As a result, all compounds showed a response to the electric field but did not show ferroelectric behavior.