New banana-type liquid crystal with a methoxy group substituted near the central ring

Abstract

A seven-ring achiral bent core (banana-shaped) mesogen with a thermally stable ester linkage in the molecule was synthesized. The novelty of the molecular structure lies in the methoxy group laterally substituted in the ortho position on the phenyl ring located near the molecular centre. The compound shows two mesophases; the high temperature one can be attributed to the antiferroelectric B₂ phase, the low temperature one is a smectic phase with an in-plane ordering.