Synthesis of new schiff base ester liquid crystals with a benzothiazole core
A series of new calamitic liquid crystals, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, comprising a benzothiazole core, terminal methoxy group and a Schiff base linkage were synthesised and characterised. This series comprises 12 members wherein members differ by the length of the alka...
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| Format: | Article |
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Taylor & Francis Group, LLC
2010
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| author | Ha, Sie-Tiong Koh, Teck Ming Lee, Siew Ling Yeap, Guan Yeow Lin, Hong Cheu Ong, Siew-Teng |
| author_facet | Ha, Sie-Tiong Koh, Teck Ming Lee, Siew Ling Yeap, Guan Yeow Lin, Hong Cheu Ong, Siew-Teng |
| author_sort | Ha, Sie-Tiong |
| collection | ePrints |
| description | A series of new calamitic liquid crystals, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, comprising a benzothiazole core, terminal methoxy group and a Schiff base linkage were synthesised and characterised. This series comprises 12 members wherein members differ by the length of the alkanoyloxy chain (C n-1H2n-1COO-, where n?=?2–8, 10, 12, 14, 16, 18). Their mesomorphic properties were studied by using differential scanning calorimetry, optical polarising microscopy and powder X-ray diffraction techniques. The short chain derivatives (n?=?2 and 3) were non-mesogenic compounds, while an enantiotropic nematic phase was present throughout the remaining members of the series. The smectic C phase emerged from the decanoyloxy derivative onwards. |
| first_indexed | 2024-03-05T18:40:29Z |
| format | Article |
| id | utm.eprints-26652 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:40:29Z |
| publishDate | 2010 |
| publisher | Taylor & Francis Group, LLC |
| record_format | dspace |
| spelling | utm.eprints-266522018-11-30T07:07:10Z http://eprints.utm.my/26652/ Synthesis of new schiff base ester liquid crystals with a benzothiazole core Ha, Sie-Tiong Koh, Teck Ming Lee, Siew Ling Yeap, Guan Yeow Lin, Hong Cheu Ong, Siew-Teng Q Science A series of new calamitic liquid crystals, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, comprising a benzothiazole core, terminal methoxy group and a Schiff base linkage were synthesised and characterised. This series comprises 12 members wherein members differ by the length of the alkanoyloxy chain (C n-1H2n-1COO-, where n?=?2–8, 10, 12, 14, 16, 18). Their mesomorphic properties were studied by using differential scanning calorimetry, optical polarising microscopy and powder X-ray diffraction techniques. The short chain derivatives (n?=?2 and 3) were non-mesogenic compounds, while an enantiotropic nematic phase was present throughout the remaining members of the series. The smectic C phase emerged from the decanoyloxy derivative onwards. Taylor & Francis Group, LLC 2010-05 Article PeerReviewed Ha, Sie-Tiong and Koh, Teck Ming and Lee, Siew Ling and Yeap, Guan Yeow and Lin, Hong Cheu and Ong, Siew-Teng (2010) Synthesis of new schiff base ester liquid crystals with a benzothiazole core. Liquid Crystals, 37 (5). 547- 554. ISSN 0267-8292 http://dx.doi.org/10.1080/02678291003710425 DOI:10.1080/02678291003710425 |
| spellingShingle | Q Science Ha, Sie-Tiong Koh, Teck Ming Lee, Siew Ling Yeap, Guan Yeow Lin, Hong Cheu Ong, Siew-Teng Synthesis of new schiff base ester liquid crystals with a benzothiazole core |
| title | Synthesis of new schiff base ester liquid crystals with a benzothiazole core |
| title_full | Synthesis of new schiff base ester liquid crystals with a benzothiazole core |
| title_fullStr | Synthesis of new schiff base ester liquid crystals with a benzothiazole core |
| title_full_unstemmed | Synthesis of new schiff base ester liquid crystals with a benzothiazole core |
| title_short | Synthesis of new schiff base ester liquid crystals with a benzothiazole core |
| title_sort | synthesis of new schiff base ester liquid crystals with a benzothiazole core |
| topic | Q Science |
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