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Comparison of Mesomorphic Properties in Chiral and Achiral Homologous Series of High Tilted Ferroelectrics and Antiferroelectrics

GAsowska, J.; DAbrowski, R.; Drzewiński, W.; Filipowicz, M.; Przedmojski, J.; Kenig, K.

Authors

J. GAsowska

R. DAbrowski

W. Drzewiński

M. Filipowicz

J. Przedmojski

K. Kenig



Contributors

Abstract

Homologous series of chiral (S) 4-(1-methylheptyloxycarbonyl)-phenyl and achiral 4-(4-heptyloxycarbonylphenyl 4-(perfluoroalkanoyloxyhexyloxy)biphenylates or 4-(alkanoyloxyhexyloxy)biphenylates, chiral (S) and racemic (R,S) 4′-(1-methyl heptyloxycarbonyl)biphenyl-4-yl 4-(perfluoroalkanoyloxyhexyloxy)benzoates or 4 (alkanoyloxyhexyloxy)benzoates have been prepared and their phase transitions have been investigated by DSC and polarizing thermomicroscopic methods. Moreover the temperature dependence of interlayer spacing by a small angle X-ray diffraction method has been studied. The chiral and achiral members exhibit a SmC anti. phase, while racemic members only exhibit SmC phase. Fluorinated compounds have lower melting points, lower melting enthalpy and broader range of the SmC anti. phase than earlier prepared series with shorter spacer group (CH 2 ) m , m < 6. They are very useful components for the formulation of orthoconic (interlayer tilt 90°) antiferroelectric mixtures with temperature range from (−20°C) to 100°C.

Citation

GAsowska, J., DAbrowski, R., Drzewiński, W., Filipowicz, M., Przedmojski, J., & Kenig, K. (2004). Comparison of Mesomorphic Properties in Chiral and Achiral Homologous Series of High Tilted Ferroelectrics and Antiferroelectrics. Ferroelectrics, 309(1), 83-93. https://doi.org/10.1080/00150190490509962

Journal Article Type Article
Online Publication Date Sep 7, 2010
Publication Date 2004
Deposit Date Sep 19, 2018
Journal Ferroelectrics
Print ISSN 0015-0193
Electronic ISSN 1563-5112
Publisher Taylor and Francis Group
Peer Reviewed Peer Reviewed
Volume 309
Issue 1
Pages 83-93
DOI https://doi.org/10.1080/00150190490509962
Public URL https://durham-repository.worktribe.com/output/1319821