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Liquid Crystals Volume 35, 2008 - Issue 1
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Original Articles

Liquid crystalline benzothiophene derivatives

Milan Kurfürst Department of Organic Chemistry, Institute of Chemical Technology, CZ‐166 28 Prague 6, Czech Republic
,
Václav Kozmík Department of Organic Chemistry, Institute of Chemical Technology, CZ‐166 28 Prague 6, Czech Republic
,
Jiří Svoboda Department of Organic Chemistry, Institute of Chemical Technology, CZ‐166 28 Prague 6, Czech RepublicCorrespondence[email protected]
,
Vladimíra Novotná Institute of Physics, Academy of Science of the Czech Republic, Na Slovance 2, CZ‐182 21 Prague 9, Czech Republic
&
Milada Glogarová Institute of Physics, Academy of Science of the Czech Republic, Na Slovance 2, CZ‐182 21 Prague 9, Czech Republic
Pages 21-31 | Received 24 Aug 2007, Accepted 03 Oct 2007, Published online: 03 Jan 2008
 
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Abstract

The role and position of the benzothiophene core in several series of calamitic liquid crystals was examined. Benzothiophene and its lateral 3‐chloro‐ and 6‐methoxy‐substituted derivatives, where the benzothiophene unit is in the terminal position, support formation of broad nematic phases. On the other hand, introduction of a longer alkoxy chain in the 6‐position or positioning the benzothiophene in the centre of the molecular structure led to appearance of smectic C and/or smectic A phases.

Acknowledgements

This work was supported by Czech Science Foundation (project No. 202/05/0431), Ministry of Education, Youth and Sports of the Czech Republic (project OC176) and Grant Agency of AS CR (project No. IAA100100710).

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