The synthesis and mesomorphic properties of some novel antiferroelectric liquid crystals

Article abstract of DOI:10.1080/10587250108025297

Several esters have been synthesised that exhibit the antiferroelectric smectic C phase. The core structures, like virtually all antiferroelectric materials, are very similar to that of MHPOBC. Lateral fluoro substituents have been used to reduce melting points and to investigate their effect on mesomorphic properties, spontaneous polarisation and tilt angle. A new device format reported by Lagerwall requires antiferroelectric liquid crystals with a 45° tilt angle. Novel antiferroelectric materials were prepared with fluoro substituents in lateral positions and in a terminal chain to provide low melting points, high antiferroelectric phase stability, high spontaneous polarisation and tilt angles of up to 45°. The synthetic routes to the novel materials are discussed, and the transition temperatures, tilt angles and spontaneous polarisations are compared to those of known materials.

Full text of DOI:10.1080/10587250108025297

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Molecular Crystals and
Liquid Crystals Science
and Technology. Section A.
Molecular Crystals and Liquid
Crystals
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The Synthesis and
Mesomorphic Properties of
Some Novel Antiferroelectric
Liquid Crystals
Michael Hird a , John W. Goodby a , Kenneth J. Toyne
a , Helen F. Gleeson b , I. Peter Buxton a , Alexander
J. Seed c & Mark R. Herbert c
a Department of Chemistry , University of Hull ,
Hull, HU6 7RX, UK
b Department of Physics and Astronomy , University
of Manchester , Manchester, M13 9PL, UK
c Department of Chemistry , Kent State University ,
Kent, 44242, USA
Published online: 27 Oct 2006.
To cite this article: Michael Hird , John W. Goodby , Kenneth J. Toyne , Helen
F. Gleeson , I. Peter Buxton , Alexander J. Seed & Mark R. Herbert (2001) The
Synthesis and Mesomorphic Properties of Some Novel Antiferroelectric Liquid Crystals,
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular
Crystals and Liquid Crystals, 365:1, 213-220, DOI: 10.1080/10587250108025297
To link to this article: http://dx.doi.org/10.1080/10587250108025297

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