The effect of a lateral substituent on the mesomorphic properties in a series of ferroelectric liquid crystals with a 2-alkoxypropionate unit

• Published in: Liquid crystals Vol. 22; no. 5; pp. 557 - 561
• Main Authors: KASPAR, M., HAMPLOVA, V., PAKHOMOV, S. A., STIBOR, I., SVERENYAK, H., BUBNOV, A. M., GLOGAROVA, M., VANEK, P.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis Group 01-05-1997
• ISSN: 0267-8292; 1366-5855
• DOI: 10.1080/026782997208947

A new series of ferroelectric liquid crystal materials containing a lateral methyl group on the aromatic ring of the alkoxybenzoate unit has been synthesized and investigated. These materials exhibit a wide temperature range of ferroelectric SmC* phase on cooling (including supercooling) with a very high spontaneous polarization. All phase transition temperatures are lower when compared with those of similar non-substituted materials. In comparison with the compounds containing the lateral methoxy group, only the SmC*-Cr transition changed significantly. The values of spontaneous polarization are mostly increased compared with both non-substituted and methoxy substituted compounds.