An Unusual Endothermic Transition to an Optically Isotropic Phase Organized by Chiral Molecular Recognition

A novel chiral liquid crystal was found to exhibit an endothermic transition upon cooling from a chiral smectic C phase to an optically isotropic phase. C-13 NMR and X-ray diffraction indicate that the isotropic phase has a layered structure in which fast isotropic reorientation of molecules or mole...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1998-08, Vol.37 (8A), p.L942
Main Authors: Yoshizawa, Atsushi, Umezawa, Junko, Ise, Noriko, Sato, Rie, Soeda, Yukie, Kusumoto, Tetsuo, Sato, Ken-ichi, Hiyama, Tamejiro, Takanishi, Yoichi, Takezoe, Hideo
Format: Article
Language:English
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Summary:A novel chiral liquid crystal was found to exhibit an endothermic transition upon cooling from a chiral smectic C phase to an optically isotropic phase. C-13 NMR and X-ray diffraction indicate that the isotropic phase has a layered structure in which fast isotropic reorientation of molecules or molecular assemblies occurs. We suggest that molecular aggregation via chiral recognition breaks anisotropic molecular ordering, which leads to a novel phase structure.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.37.L942