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Int. J. Mol. Sci. 2016, 17(7), 994; doi:10.3390/ijms17070994

Conductive Hybrid Crystal Composed from Polyoxomolybdate and Deprotonatable Ionic-Liquid Surfactant

1
Department of Chemistry, School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan
2
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
*
Author to whom correspondence should be addressed.
Academic Editors: Andreas Taubert and Peter Hesemann
Received: 11 April 2016 / Revised: 20 June 2016 / Accepted: 20 June 2016 / Published: 23 June 2016
(This article belongs to the Special Issue Ionic Liquids 2016 and Selected Papers from ILMAT III)
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Abstract

A polyoxomolybdate inorganic-organic hybrid crystal was synthesized with deprotonatable ionic-liquid surfactant. 1-dodecylimidazolium cation was employed for its synthesis. The hybrid crystal contained δ-type octamolybdate (Mo8) isomer, and possessed alternate stacking of Mo8 monolayers and interdigitated surfactant bilayers. The crystal structure was compared with polyoxomolybdate hybrid crystals comprising 1-dodecyl-3-methylimidazolium surfactant, which preferred β-type Mo8 isomer. The less bulky hydrophilic moiety of the 1-dodecylimidazolium interacted with the δ-Mo8 anion by N–H···O hydrogen bonds, which presumably induced the formation of the δ-Mo8 anion. Anhydrous conductivity of the hybrid crystal was estimated to be 5.5 × 10−6 S·cm−1 at 443 K by alternating current (AC) impedance spectroscopy. View Full-Text
Keywords: inorganic-organic; hybrid crystal; polyoxometalate; ionic-liquid; surfactant inorganic-organic; hybrid crystal; polyoxometalate; ionic-liquid; surfactant
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Kobayashi, J.; Kawahara, R.; Uchida, S.; Koguchi, S.; Ito, T. Conductive Hybrid Crystal Composed from Polyoxomolybdate and Deprotonatable Ionic-Liquid Surfactant. Int. J. Mol. Sci. 2016, 17, 994.

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