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| Mesomorphic behavior of new azomethine liquid crystals having terminal iodo group |
| Sie-Tiong Haa, Teck-Leong Leea, Guan-Yeow Yeapb, Masato M. Itoc, Ayumu Saitoc, Masaaki Watanabec |
a Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia;
b Liquid Crystal Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia;
c Faculty of Engineering, Soka University, 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan |
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Abstract A series of azomethine esters, 3-hydroxy-4-{[(4-iodophenyl)imino]methyl}phenyl alkanoates possessing even number of carbon atoms at the terminal alkanoyloxy chain (Cn-1H2n-1COO-, n=4,6,8,10,12,14) was synthesized. n-Butanoyloxy was found non-mesogenic, whilst n-hexanoyloxy to n-tetradecanoyloxy exhibited enantiotropic smectic A phase with fan-shaped texture. It was found that the length of terminal alkanoyloxy chain influenced the mesomorphic properties.
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Received: 10 June 2010
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| Fund:The author (S.T. Ha) would like to thank Universiti Tunku Abdul Rahman for the research facilities and financial support. T.L. Lee would like to acknowledge Ministry of Higher Education for the award of MOHE Scholarship. |
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Corresponding Authors:
Sie-Tiong Ha,E-mail addresses:hast_utar@yahoo.com,hast@utar.edu.my
E-mail: hast_utar@yahoo.com,hast@utar.edu.my
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