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Powder X-ray diffraction analysis of the ferroelectric liquid crystal with a 2-methylbutoxypropionate unit as a function of temperature

Published online by Cambridge University Press:  05 March 2012

L. Dobiášová,
H. Šíchová and
V. Valvoda
L. Dobiášová
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
H. Šíchová
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
V. Valvoda*
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
*
a)Author to whom correspondence should be addressed.
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Abstract

The ferroelectric liquid crystal material [4-[(4-methyloxyfenyl) carbonyloxyl] bifenyl-4′-yl]-(S)-2-methylbutoxypropionate containing a lateral methyl group on the aromatic ring of the alkoxybenzoate unit and two chiral carbons has been investigated by X-ray powder diffraction analysis at the 28 °C–105 °C temperature range. On cooling through the SmC temperature range, the layer spacing decreases from 28.3 to 27.7 Å with a small variation of average intermolecular distances. Lattice parameters of tetragonal and monoclinic crystalline phases occurring at lower temperatures have been determined.

Keywords

liquid crystalsphase transformationtemperature dependence

Information

Type
Technical Articles
Information
Powder Diffraction , Volume 18 , Issue 4 , December 2003, pp. 293 - 295
Copyright
Copyright © Cambridge University Press 2003

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References

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