Unusual Formation of Switchable Hexagonal Columnar Phase by Bent-Shaped Molecules with Low Bent-Angle Naphthalene Central Core and Alkylthio Tail
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概要
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The low-angle bent-shaped molecules with 1,7-naphthalene central core and alkylthio tails can form a novel hexagonal columnar phase and a dark B4 phase. The columnar phase has a large two-dimensional hexagonal lattice with edges of 65–75 Å and exhibits polar switching with spontaneous polarization along the column axis. Calculated from the density (${\sim}1$ g$\cdot$cm-3) and unit volume, the number of molecules that are necessary to fill a 4.6-Å stratum of each column were found to be ${\sim}11$. Such a large number of molecules can be accommodated only in the tube-like assembly, which may be the first example as formed by the usual bent-shaped molecule with a single alkylthio tail.
- 2010-12-25
著者
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Lee Seng
Department Of Chemistry And Chemistry Institute For Functional Materials Pusan National University
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Li Xiaodong
School Of Material Science And Engineering Beijing University Of Aeronautics And Astronautics
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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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Kang Sungmin
Department Of Nuclear Medicine Kyungpook National University School Of Medicine
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Tokita Masatoshi
Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan
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Watanabe Junji
Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan
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Lee Seng
Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan
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