Substitution effects on the liquid crystalline properties of D,L-xylitol amphiphiles
作者:
JOHNW. GOODBY,
JULIEA. HALEY,
MARCUSJ. WATSON,
GRAHAME MACKENZIE,
STEPHENM. KELLY,
PHILIPPE LETELLIER,
OLIVIER DOUILLET,
PAUL GODE,
GERARD GOETHALS,
GINO RONCO,
PIERRE VILLA,
期刊:
Liquid Crystals
(Taylor Available online 1997)
卷期:
Volume 22,
issue 3
页码: 367-378
ISSN:0267-8292
年代: 1997
DOI:10.1080/026782997209441
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
In this article we describe the self-assembling properties of alkyl substituted xylitols in relation to both thermotropic and lyotropic liquid crystalline mesophases. Three series of substituted xylitols were prepared where aliphatic chains of varying length were attached to a xylitol moiety via ether, thioether and ester linking groups. The thermotropic properties were investigated by thermal polarized light microscopy and differential scanning calorimetry, and evaluated as a function of chain length and linking group. The lyotropic phase behaviour was investigated via the addition of water to each material at room temperature. The efficiency for forming thermotropic phases was found to be reversed for the lyotropic phases in respect of the three series, i.e. as a function of the linking unit.
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