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Liquid Crystals Volume 23, 1997 - Issue 1
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Original Articles

Evidence of nematic, hexagonal and rectangular columnar phases in thermotropic ionic liquid crystals

FRANCK ARTZNER
,
MICHELE VEBER
,
MARIANNE CLERC
&
ANNE-MARIE LEVELUT
Pages 27-33 | Received 01 Sep 2001, Published online: 06 Aug 2010
 
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Abstract

Dithiolium salts, with amphipathic character, are compounds of choice for investigations of the influence of an ionic feature upon mesomorphic properties. In this way, salts bearing a branched chain have been studied by SAXS. In spite of their rod-like shape, they exhibit only columnar mesophases, the supramolecular organization of which is close to that of cylindrical inverted micelles. Moreover, the nematic columnar phase, characterized by the loss of lateral positional correlations of the columns themselves, is one of the first examples of such behaviour in the case of thermotropic liquid crystals.

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