Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/41843
標題: Synthesis and characterization of halogen-containing ferroelectric liquid crystals and side chain liquid crystalline polymers
作者: Hsiue, G.H.
鄭如忠
Sha, Y.A.
Hsieh, S.J.
Jeng, R.J.
Kuo, W.J.
關鍵字: oligooxyethylene spacers
期刊/報告no:: Liquid Crystals, Volume 28, Issue 3, Page(s) 365-374.
摘要: A new series of ferroelectric liquid crystals and side chain liquid crystalline polymers based on halogen-containing chiral centres has been synthesized. Chemical structures were analysed by NMR. Liquid crystal phases were characterized by differential scanning calorimetry, optical polarizing microscopy, and X-ray diffractometry. The behaviour of the liquid crystalline phases was investigated as a function of spacer units and differing terminal asymmetric moieties. It was found that phase transition temperatures decreased with increasing length of the oligooxyethylene spacer unit. Differing terminal asymmetric moieties led to differing mesophase phenomena. Furthermore, a wide temperature range (including room temperature) of a chiral smectic C phase was achieved.
URI: http://hdl.handle.net/11455/41843
ISSN: 0267-8292
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