X-ray diffraction studies of the liquid crystal phases of certain 4-n-alkoxyphenyl 4-(5-n-alkyl-2-thienyl)benzoates
作者:
JohnD. Bunning,
JaneL. Butcher,
DavidJ. Byron,
AvtarS. Matharu,
RobertC. Wilson,
期刊:
Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 19,
issue 5
页码: 693-698
ISSN:0267-8292
年代: 1995
DOI:10.1080/02678299508031085
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Then-butyl,n-octyl,n-decyl andn-dodecyl homologues of each of the 4-n-pentyloxyphenyl, 4-n-hexyloxyphenyl and 4-n-heptyloxyphenyl 4-(5-n-alkyl-2-thienyl)benzoates have been prepared. All the homologues give rise to liquid crystal phases and their transition temperatures are reported. Phase identification was not straightforward, especially when distinguishing between some of the higher order smectic phases, and required a combination of thermal optical microscopy and X-ray diffraction studies, including powder photographs and detailed measurements of smectic layer spacings.
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