Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent
A homologous series of Schiff base esters, 4-chlorobenzylidene-4'-n-alkanoyloxyanilines, containing even number of carbons at the end groups of the molecules (Cn-1H2n-1COO–, n = 4, 6, 8, 10, 12, 14, 16) were synthesized. The mesomorphic properties were investigated by differential scanning calo...
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my.utm.266512018-11-30T07:07:10Z http://eprints.utm.my/id/eprint/26651/ Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent Ha, Sie Tiong Ong, Lay Khoon Lee, Siew Ling Lin, Hong Cheu Win, Yip Foo Ong, Siew Teng Q Science A homologous series of Schiff base esters, 4-chlorobenzylidene-4'-n-alkanoyloxyanilines, containing even number of carbons at the end groups of the molecules (Cn-1H2n-1COO–, n = 4, 6, 8, 10, 12, 14, 16) were synthesized. The mesomorphic properties were investigated by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). It was found that the end groups of the molecules had an effect on the mesomorphic properties. n-Butanoyloxy was found non-mesogenic, whilst n-hexanoyloxy exhibited monotropic smectic phase. The higher members in this homologous series were enantiotropic smectogens. Elsevier B.V. 2010-06 Article PeerReviewed Ha, Sie Tiong and Ong, Lay Khoon and Lee, Siew Ling and Lin, Hong Cheu and Win, Yip Foo and Ong, Siew Teng (2010) Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent. Chinese Chemical Letters, 21 (6). 637 - 640. ISSN 1001-8417 http://dx.doi.org/10.1016/j.cclet.2010.01.023 DOI:10.1016/j.cclet.2010.01.023 |
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Q Science Ha, Sie Tiong Ong, Lay Khoon Lee, Siew Ling Lin, Hong Cheu Win, Yip Foo Ong, Siew Teng Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent |
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A homologous series of Schiff base esters, 4-chlorobenzylidene-4'-n-alkanoyloxyanilines, containing even number of carbons at the end groups of the molecules (Cn-1H2n-1COO–, n = 4, 6, 8, 10, 12, 14, 16) were synthesized. The mesomorphic properties were investigated by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). It was found that the end groups of the molecules had an effect on the mesomorphic properties. n-Butanoyloxy was found non-mesogenic, whilst n-hexanoyloxy exhibited monotropic smectic phase. The higher members in this homologous series were enantiotropic smectogens. |
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Article |
author |
Ha, Sie Tiong Ong, Lay Khoon Lee, Siew Ling Lin, Hong Cheu Win, Yip Foo Ong, Siew Teng |
author_facet |
Ha, Sie Tiong Ong, Lay Khoon Lee, Siew Ling Lin, Hong Cheu Win, Yip Foo Ong, Siew Teng |
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Ha, Sie Tiong |
title |
Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent |
title_short |
Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent |
title_full |
Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent |
title_fullStr |
Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent |
title_full_unstemmed |
Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent |
title_sort |
synthesis and mesomorphic properties of schiff base esters possessing terminal chloro substituent |
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Elsevier B.V. |
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2010 |
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http://eprints.utm.my/id/eprint/26651/ http://dx.doi.org/10.1016/j.cclet.2010.01.023 |
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