標題: Synthesis and Mesomorphic Properties of 2-(4-Alkyloxyphenyl)benzothiazoles
作者: Ha, Sie-Tiong
Koh, Teck-Ming
Yeap, Guan-Yeow
Lin, Hong-Cheu
Boey, Peng-Lim
Win, Yip-Foo
Ong, Siew-Teng
Ong, Lay-Khoon
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: 2-(4-alkyloxyphenyl)benzothiazole;heterocycles;Smectic A;structure-property relationship
公開日期: 2009
摘要: A homologous series of 2-(4-alkyloxyphenyl)benzothiazoles with an even number of carbons in the terminal alkoxyl chain was synthesized and characterized. The structure of the compounds was postulated using elemental analyses, FT-IR, NMR, and mass spectrometry techniques. Their liquid crystalline properties have been investigated by optical polarizing microscopy, DSC, and X-ray diffraction (XRD) techniques. Whilst the n-octyloxy to n-hexadecyloxy derivatives exhibited a monotropic smectic A phase, the n-ethoxy to n-hexyloxy and the n-octadecyloxy derivatives were not mesogenic. The mesomorphic properties of the present series were compared with other structurally related series to establish the chemical structure-mesomorphic properties relationship.
URI: http://hdl.handle.net/11536/7794
http://dx.doi.org/10.1080/15421400902987347
ISSN: 1542-1406
DOI: 10.1080/15421400902987347
期刊: MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume: 506
起始頁: 56
結束頁: 70
顯示於類別:期刊論文


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