Issue 6, 2001

Abstract

A new series of achiral five-ring banana-shaped compounds is presented which exhibit a cyano substituent in the 4-position of the central core. It follows from X-ray investigations and from NMR, microscopical and electro-optical measurements that all members of the series do not only form the chiral B2 phase characteristic of a bent molecular shape, but also SmA and SmC (in one case also nematic) phases. The electro-optical studies on the B2 phase prove an antiferroelectric ground state which can be switched into ferroelectric states. On the base of the experimental data plausible structure models have been proposed.

Graphical abstract: New variants of polymorphism in banana-shaped mesogens with cyano-substituted central core

Supplementary files

Article information

Article type
Paper
Submitted
26 Jan 2001
Accepted
30 Mar 2001
First published
26 Apr 2001

J. Mater. Chem., 2001,11, 1642-1650

New variants of polymorphism in banana-shaped mesogens with cyano-substituted central core

I. Wirth, S. Diele, A. Eremin, G. Pelzl, S. Grande, L. Kovalenko, N. Pancenko and W. Weissflog, J. Mater. Chem., 2001, 11, 1642 DOI: 10.1039/B100924I

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