Odd-even effects in the thermotropic and optical properties of chiral triplet liquid crystals
作者:
AntoniusT. M. Marcelis,
Arie Koudijs,
ErnstJ. R. Sudhölter,
期刊:
Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 18,
issue 6
页码: 851-855
ISSN:0267-8292
年代: 1995
DOI:10.1080/02678299508036702
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A series of chiral triplet liquid crystalline compounds with a central biphenyl group to which two dihydrocholesteryl groups are attached via two flexible alkanoate spacers has been prepared and investigated. As a function of spacer length, these compounds show strong odd-even effects for the phase transition temperatures, the corresponding entropy changes and the selective reflection wavelengths associated with the chiral nematic phases. Asymmetrical compounds with one odd and one even number of methylene groups in their spacers have properties intermediate between those of symmetrical compounds with two odd or two even spacers.
点击下载:
PDF (479KB)
返 回