Temperature Dependent Sign Reversal of the Optical Anisotropy in Pyramidic Mesophases
Open Access
- 1 September 1986
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 41 (9) , 1137-1140
- https://doi.org/10.1515/zna-1986-0908
Abstract
Hexasubstituted tribenzocyclononene derivatives with R = -OC(O)C6H4CnH2n+i and R = -OC(O)C6H4OCnH2n+1 possess enantiotropic pyramidic mesophases. These mesophases exhibit an uncommon feature in that their optical anisotropy changes sign as function of temperature within the mesophase region. It is suggested that this effect reflects conformational changes involving the side chain benzene ring.Keywords
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