New antiferroelectric liquid crystals with a trifluoromethyl group at the chiral centre
- 1 July 1995
- journal article
- Published by Taylor & Francis in Liquid Crystals
- Vol. 19 (1) , 15-19
- https://doi.org/10.1080/02678299508036716
Abstract
New antiferroelectric liquid crystals (AFLCs) with a trifluoromethyl group at the chiral centre were synthesized using optically active 3-(4-methoxyphenyl)-4,4,4-trifluorobutanoic acid. The new AFLCs showed the phase sequence on cooling: isotropic liquid (I)-smectic A (Sa) phase-antiferroelectric (AF) phase-crystal (Cr). In the antiferroelectric phase, a d.c.-threshold, a double hysteresis loop, a small dielectric constant value and two sharp switching-current peaks were observed. These are the first examples that are AFLCs which do not have a carbonyl moiety in the molecule.Keywords
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