One-dimensional imidazole aggregate in aluminium porous coordination polymers with high proton conductivity

Sareeya Bureekaew, Satoshi Horike, Masakazu Higuchi, Motohiro Mizuno, Takashi Kawamura, Daisuke Tanaka, Nobuhiro Yanai, Susumu Kitagawa

Research output: Chapter in Book/Report/Conference proceedingChapter

8 Citations (Scopus)


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.

Original languageEnglish
Title of host publicationMaterials for Sustainable Energy
Subtitle of host publicationA Collection of Peer-Reviewed Research and Review Articles from Nature Publishing Group
PublisherWorld Scientific Publishing Co.
Number of pages6
ISBN (Electronic)9789814317665
ISBN (Print)9814317640, 9789814317641
Publication statusPublished - Jan 1 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Energy
  • General Engineering
  • General Materials Science


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