High tilt antiferroelectric esters bearing a perfluorobutanoyloxy terminal chain: the influence of lateral fluoro substituents on mesomorphic behaviour, tilt angle, and spontaneous polarization |
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Authors: | Andrew I. Stipetic John W. Goodby Michael Hird Yann M. Raoul Helen F. Gleeson |
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Affiliation: | a Department of Chemistry, University of Hull, Hull HU6 7RX, UKb Department of Physics, University of Manchester, Manchester M13 9PL, UK |
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Abstract: | Novel liquid crystalline esters have been synthesized with a perfluorocarbonyloxy terminal chain and lateral fluoro substituents in order to determine their influence on mesomorphic behaviour, tilt angle and spontaneous polarization. Certain locations of lateral fluoro substituents provide for very low melting points and reasonably wide temperature ranges of the antiferroelectric phase, and can generate enhanced tilt angles of up to 45°, although spontaneous polarization is always lower than for the parent system without lateral fluoro substituents. Thus, these novel materials, particularly as components in mixtures, should be useful in high tilt antiferroelectric (orthoconic) applications. |
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