Frustrated Smectic Phase Appearing as Transitional State between Single-Layer and Antiferroelectric Bilayer Smectic Phases in Binary Mixtures of Dimeric Compounds
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概要
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Twin dimers, $m$OAM5AMO$m$, form characteristic smectic phases, single-layer SmCAs and antiferroelectric bilayer SmCAb phases. Structural transformation from SmCAs to SmCAb was examined in two series of binary mixtures of 8OAM5AMO8/4OAM5AMO4 and 8OAM5AMO8/16OAM5AMO16. In this transformation, the frustrated SmCAf with density modulation along the layer is formed and the size of modulation increases from 50 to 250 Å with variations in mixture contents from an edge near SmCAs to another edge near SmCAb. From polymorphisms shown by some mixtures, it was found that SmCAs and SmCAb are located at high-temperature and low-temperature edges, respectively, and that the SmCAf phase is set between them.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-06-15
著者
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Izumi Tatsuya
Department Of Dermatology Keio University School Of Medicine
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Tokita Masatoshi
Department Of Organic And Polymer Materials Chemistry Tokyo Institute Of Technology
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Watanabe Junji
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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Naitou Yuu
Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Izumi Tatsuya
Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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