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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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Main Authors: Ha, Sie Tiong, Ong, Lay Khoon, Lee, Siew Ling, Lin, Hong Cheu, Win, Yip Foo, Ong, Siew Teng
Format: Article
Published: Elsevier B.V. 2010
Subjects:
Q Science
Online Access:http://eprints.utm.my/id/eprint/26651/
http://dx.doi.org/10.1016/j.cclet.2010.01.023
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spelling 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
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic Q Science
spellingShingle 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
description 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.
format 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
author_sort 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
publisher Elsevier B.V.
publishDate 2010
url http://eprints.utm.my/id/eprint/26651/
http://dx.doi.org/10.1016/j.cclet.2010.01.023
_version_ 1643647819850973184
score 13.189025

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