標題: | New mesomorphic benzothiazol derivatives: Synthesis and characterization |
作者: | 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 |
關鍵字: | Benzothiazole;Nematic;Smectic C;Mesomorphic |
公開日期: | 1-十月-2013 |
摘要: | 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 |
期刊: | CHINESE CHEMICAL LETTERS |
Volume: | 24 |
Issue: | 10 |
起始頁: | 926 |
結束頁: | 928 |
顯示於類別: | 期刊論文 |