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Title: One-dimensional imidazole aggregate in aluminium porous coordination polymers with high proton conductivity
Authors: Bureekaew, Sareeya
Horike, Satoshi  kyouindb  KAKEN_id  orcid (unconfirmed)
Higuchi, Masakazu  kyouindb  KAKEN_id
Mizuno, Motohiro
Kawamura, Takashi
Tanaka, Daisuke
Yanai, Nobuhiro
Kitagawa, Susumu  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 北川, 進
堀毛, 悟史
Keywords: porous coordination polymer
metal−organic framework
proton conductivity
solid−state NMR
Issue Date: Oct-2009
Publisher: Nature Publishing Group
Journal title: Nature Materials
Volume: 8
Start page: 831
End page: 836
Abstract: The development of anhydrous proton-conductive materials operating at temperatures above 80 °C is a challenge that needs to be met for practical applications. Herein, we propose the new idea of encapsulation of a proton-carrier molecule—imidazole in this work—in aluminium porous coordination polymers for the creation of a hybridized proton conductor under anhydrous conditions. Tuning of the host–guest interaction can generate a good proton-conducting path at temperatures above 100 °C. The dynamics of the adsorbed imidazole strongly affect the conductivity determined by 2H solid-state NMR. Isotope measurements of conductivity using imidazole-d4 showed that the proton-hopping mechanism was dominant for the conducting path. This work suggests that the combination of guest molecules and a variety of microporous frameworks would afford highly mobile proton carriers in solids and gives an idea for designing a new type of proton conductor, particularly for high-temperature and anhydrous conditions.
Description: ナノ細孔の中で有機分子がプロトンを受け渡す -湿度ゼロ環境、100度以上で高いプロトン伝導性を示す 多孔性固体電解質の合成に成功-. 京都大学プレスリリース. 2009-09-07.
Rights: c 2009 Nature Publishing Group All Rights Reserved. 許諾条件により本文は2010-03-06に公開.
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1038/nmat2526
PubMed ID: 19734885
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