New banana-shaped mesogens with bromine-substituted central core

Banana-shaped five-ring mesogens derived from either isophthalic acid or 4-bromoisophthalic acid have been synthesized. It is shown that the melting and clearing points of the bromine-substituted compounds are markedly decreased in comparison with the analogous unsubstituted compounds. On the basis...

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Bibliographic Details
Published in:Liquid crystals 2001-08, Vol.28 (8), p.1269-1277
Main Authors: Dehne, H., Pötter, M., Sokolowski, S., Weissflog, W., Diele, S., Pelzl, G., Wirth, I., Kresse, H., Schmalfuss, H., Grande, S.
Format: Article
Language:English
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Summary:Banana-shaped five-ring mesogens derived from either isophthalic acid or 4-bromoisophthalic acid have been synthesized. It is shown that the melting and clearing points of the bromine-substituted compounds are markedly decreased in comparison with the analogous unsubstituted compounds. On the basis of X-ray diffraction studies and NMR measurements, as well as dielectric and electro-optical investigations, the mesophase of these compounds could be identified as a B 2 phase.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678290110047904