Importance of Molecular Geometry in Liquid Crystal Formation-Incapability of Mesophase-Formation by Bent Dimesogenic and Star-Shaped Trimesogenic Compounds

A series of compounds were synthesized that contain varying number of mesogenic units, 4-n-butylazobenzene moiety, attached to the central benzene ring through ester bond. These compounds were subjected to thermal analysis on a differential scanning calorimeter (DSC) and also on a polarizing microsc...

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Bibliographic Details
Published in:Bulletin of the Korean Chemical Society 1990, Vol.11 (3), p.245-248
Main Authors: Jung-Il Jin, Chung-Seock Kang, Bong Young Chung
Format: Article
Language:Korean
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Summary:A series of compounds were synthesized that contain varying number of mesogenic units, 4-n-butylazobenzene moiety, attached to the central benzene ring through ester bond. These compounds were subjected to thermal analysis on a differential scanning calorimeter (DSC) and also on a polarizing microscope. It was found from this study that the presence of mesogenic units in a multi-mesogenic compound does not guarantee for the compound to become mesomorphic and that the linear molecular shape is conducive to form a liquid crystalline phase.
ISSN:0253-2964
1229-5949