The dependence of mesomorphic behaviour on the extent of hydrogen-bonding in sugar derived polyols
作者:
JOHN W. GOODBY,
MARCUS J. WATSON,
GRAHAM MACKENZIE,
STEPHEN M. KELLY,
SABRINA BACHIR,
PHILLIPE BAULT,
PAUL GODE,
GERARD GOETHALS,
PATRICK MARTIN,
GINO RONCO,
PIERRE VILLA,
期刊:
Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 25,
issue 2
页码: 139-147
ISSN:0267-8292
年代: 1998
DOI:10.1080/026782998206272
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
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.
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