The dependence of mesomorphic behaviour on the extent of hydrogen-bonding in sugar derived polyols

The thermotropic liquid crystalline properties of a variety of chiral and racemic dodecyloxy substituted polyols derived from carbohydrates were investigated as a function of the number of hydroxyl groups associated with the polyol unit. It was found that all of the materials exhibited smectic A* ph...

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Bibliographic Details
Published in:Liquid crystals 1998-08, Vol.25 (2), p.139-147
Main Authors: GOODBY, JOHN W., WATSON, MARCUS J., MACKENZIE, GRAHAM, KELLY, STEPHEN M., BACHIR, SABRINA, BAULT, PHILLIPE, GODE, PAUL, GOETHALS, GERARD, MARTIN, PATRICK, RONCO, GINO, VILLA, PIERRE
Format: Article
Language:English
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Summary:The thermotropic liquid crystalline properties of a variety of chiral and racemic dodecyloxy substituted polyols derived from carbohydrates were investigated as a function of the number of hydroxyl groups associated with the polyol unit. It was found that all of the materials exhibited smectic A* phases, and that the clearing points increased monotonically with the number of hydroxyl groups. The linear increase was found to be independent of stereochemical structure and the degree of optical purity. A model suggesting that the smectic A* phase has an internal microphase separated structure can be used to account for these observations.
ISSN:0267-8292
1366-5855
DOI:10.1080/026782998206272