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2013, Vol.86, No.9

1022-1027
BCSJ Award ArticleOpen Access

Universality of Molten State of Alkyl Chain in Liquid-Crystalline Mesophases: Smectic E Phase of 6-Alkyl-2-phenylazulene

Takuya Adachi 1 , Hideki Saitoh 2 , Yasuhisa Yamamura 1 , Mafumi Hishida 1 , Mao Ueda 3 , Shunji Ito 3 , Kazuya Saito 1
1 Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
2 Graduate School of Science and Engineering, Saitama University
3 Graduate School of Science and Technology, Hirosaki University
https://doi.org/10.1246/bcsj.20130122

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Abstract
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Through thermodynamic, spectroscopic, and structural studies, the molten state of the alkyl chain in SmE phase, which is the liquid-crystalline mesophase closest to an ordered crystalline phase, has been established in a calamitic mesogen nPA. Combining the same conclusion for the SmE phase of another calamitic mesogen nTCB, it is concluded that the alkyl chain attached at end(s) of a rod-like core is molten in any liquid-crystalline mesophase. The thermodynamic implications are briefly discussed.

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