Novel fluorinated liquid crystals. II. The synthesis and phase transitions of a novel type of ferroelectric liquid crystals containing 1,4-tetrafluorophenylene moiety
作者:
Jianxun Wen,
Minquan Tian,
Qi Chen,
期刊:
Liquid Crystals
(Taylor Available online 1994)
卷期:
Volume 16,
issue 3
页码: 445-451
ISSN:0267-8292
年代: 1994
DOI:10.1080/02678299408029169
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
4-[(S)-2-Methylbutoxycarbonyl]phenyl 4-[(4-n-alkoxy-2,3,5,6-tetrafluorophenyl)ethynyl]benzoates have been prepared from the starting material 1-pentafluorophenyl-2-trimethylsilylacetylene. Polarizing microscope textural observation and DSC measurements of the phase transitions of these novel compounds showed that they were liquid crystals with chiral smectic C phase (S*C), smectic A(SA) and cholesteric (Ch) phases. The effects of the alkoxy chain length on the transition temperatures and enthalpies were also studied.
点击下载:
PDF (392KB)
返 回