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Liquid Crystals Volume 37, 2010 - Issue 12
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Original Articles

Synthesis and mesogenic properties of three- and four-ring compounds with a fluoroisothiocyanatobiphenyl moiety

R. Dąbrowski Institute of Chemistry, Military University of Technology, Warsaw, PolandCorrespondence[email protected]
,
J. Dziaduszek Institute of Chemistry, Military University of Technology, Warsaw, Poland
,
K. Garbat Institute of Chemistry, Military University of Technology, Warsaw, Poland
,
M. Filipowicz Institute of Chemistry, Military University of Technology, Warsaw, Poland
,
S. Urban Institute of Physics, Jagiellonian University, Krakow, Poland
,
S. Gauza College of Optics and Photonics, University of Central Florida, Orlando, FL, USA
&
G. Sasnouski Institute of Applied Physics Problems, Belarusian State University, Minsk, Belarus
 show all
Pages 1529-1537 | Received 29 Jun 2010, Accepted 03 Sep 2010, Published online: 10 Dec 2010
 
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Abstract

The syntheses and mesomorphic properties of 4-alkylcyclohexyl- and 4-alkylcyclohexylethyl and 4-alkylbicyclohexyl-3-fluoro- and 3,5-difluorobiphenyl-4-isothiocyanates are described. The compounds are low melting, very broad range nematic liquid crystals and are very useful for the formulation of nematic mixtures of low viscosity and with a moderately high birefringence (0.3–0.35). The refractive indices, bulk viscosity and dielectric anisotropy extrapolated from Demus' ester mixture for the prepared compounds are presented.

Acknowledgements

The work was carried out under Polish Ministry of Sciences and Information PBS 826 and project NATO PDD(TC)-(CBP.EAP.CLG 983701)

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