Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies
A series of new rod-shaped mesomorphic compounds, 6-ethoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, consisting of a 2,6-disubstituted benzothiazole core and a Schiff base central linkage, were synthesized and their structures were ascertained via elemental analysis and spectroscopic technique...
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my.utm.263022017-10-17T03:20:30Z http://eprints.utm.my/id/eprint/26302/ Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies Tiong Haa, Sie Ming Koh, Teck Yeow Yeap, Guan Cheu Lin, Hong Siew Ling, Lee Foo Win, Yip Teng Ong, Siew Q Science A series of new rod-shaped mesomorphic compounds, 6-ethoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, consisting of a 2,6-disubstituted benzothiazole core and a Schiff base central linkage, were synthesized and their structures were ascertained via elemental analysis and spectroscopic techniques. Their mesomorphic properties were studied using differential scanning calorimetry (DSC), polarized optical microscopy (POM) and X-ray diffraction (XRD) analysis. All compounds showed enantiotropic mesomorphism. Whilst the lower members of the series, hexanoyloxy and octanoyloxy derivatives exhibited nematic phase, the higher members (decanoyloxy, dodecanoyloxy, tetradecanoyloxy, hexadecanoyloxy and octadecanoyloxy derivatives) exhibited nematic and smectic C phases. Taylor & Francis Group 2010 Article PeerReviewed Tiong Haa, Sie and Ming Koh, Teck and Yeow Yeap, Guan and Cheu Lin, Hong and Siew Ling, Lee and Foo Win, Yip and Teng Ong, Siew (2010) Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies. Phase Transitions: A Multinational Journal, 83 (3). 195 - 204. ISSN 0141-1594 http://dx.doi.org/10.1080/01411591003600375 10.1080/01411591003600375 |
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Q Science Tiong Haa, Sie Ming Koh, Teck Yeow Yeap, Guan Cheu Lin, Hong Siew Ling, Lee Foo Win, Yip Teng Ong, Siew Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies |
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A series of new rod-shaped mesomorphic compounds, 6-ethoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, consisting of a 2,6-disubstituted benzothiazole core and a Schiff base central linkage, were synthesized and their structures were ascertained via elemental analysis and spectroscopic techniques. Their mesomorphic properties were studied using differential scanning calorimetry (DSC), polarized optical microscopy (POM) and X-ray diffraction (XRD) analysis. All compounds showed enantiotropic mesomorphism. Whilst the lower members of the series, hexanoyloxy and octanoyloxy derivatives exhibited nematic phase, the higher members (decanoyloxy, dodecanoyloxy, tetradecanoyloxy, hexadecanoyloxy and octadecanoyloxy derivatives) exhibited nematic and smectic C phases. |
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Article |
author |
Tiong Haa, Sie Ming Koh, Teck Yeow Yeap, Guan Cheu Lin, Hong Siew Ling, Lee Foo Win, Yip Teng Ong, Siew |
author_facet |
Tiong Haa, Sie Ming Koh, Teck Yeow Yeap, Guan Cheu Lin, Hong Siew Ling, Lee Foo Win, Yip Teng Ong, Siew |
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Tiong Haa, Sie |
title |
Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies |
title_short |
Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies |
title_full |
Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies |
title_fullStr |
Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies |
title_full_unstemmed |
Mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies |
title_sort |
mesogenic schiff base esters with benzothiazole core: synthesis and phase transition studies |
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Taylor & Francis Group |
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2010 |
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http://eprints.utm.my/id/eprint/26302/ http://dx.doi.org/10.1080/01411591003600375 |
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