Title: New mesomorphic benzothiazol derivatives: Synthesis and characterization
Authors: Koh, Teck-Ming
Ha, Sie-Tiong
Yeap, Guan-Yeow
Lin, Hong-Cheu
材料科學與工程學系
Department of Materials Science and Engineering
Keywords: Benzothiazole;Nematic;Smectic C;Mesomorphic
Issue Date: 1-Oct-2013
Abstract: In this paper, the synthesis of new mesomorphic benzothiazolyl derivatives, 6-ethoxy-2-[4-(4-alkyloxybenzoyloxy)benzylidenamino]benzothiazoles, is presented. The structures of the title compounds were elucidated using spectroscopic techniques, such as FT-IR, NMR (H-1 and C-13), elemental analysis and EI-MS. The mesomorphic behaviours of these compounds were determined by differential scanning calorimetric and polarizing optical microscopic techniques. Compounds exhibited nematic and tilted smectic phases upon heating from crystal phase. An obvious odd-even effect was observed in this homologous series. (C) 2013 Sie-Tiong Ha. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cclet.2013.06.006
http://hdl.handle.net/11536/22712
ISSN: 1001-8417
DOI: 10.1016/j.cclet.2013.06.006
Journal: CHINESE CHEMICAL LETTERS
Volume: 24
Issue: 10
Begin Page: 926
End Page: 928
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