High proton conductivity by a metal-organic framework incorporating Zn 8O clusters with aligned imidazolium groups decorating the channels

Susan Sen, Nisanth N. Nair, Teppei Yamada, Hiroshi Kitagawa, Parimal K. Bharadwaj

研究成果: ジャーナルへの寄稿学術誌査読

238 被引用数 (Scopus)

抄録

A novel metal-organic framework, [{(Zn0.25)8(O)} Zn6(L)12(H2O)29(DMF) 69(NO3)2]n (1) {H2L = 1,3-bis(4-carboxyphenyl)imidazolium}, has been synthesized under solvothermal conditions in good yield. It shows a Zn8O cluster that is coordinated to six ligands and forms an overall three-dimensional structure with channels along the crystallographic a and b axes. The imidazolium groups of the ligand moiety are aligned in the channels. The channels are not empty but are occupied by a large number of DMF and water molecules. Upon heating, these solvent molecules can be removed without breakdown of the overall structure of the framework as shown by variable-temperature powder X-ray diffraction patterns. Of great interest is the fact that the compound exhibits high proton conductivity with a low activation energy that is comparable to those of Nafion presently used in fuel cells.

本文言語英語
ページ(範囲)19432-19437
ページ数6
ジャーナルJournal of the American Chemical Society
134
47
DOI
出版ステータス出版済み - 11月 28 2012
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 触媒
  • 化学 (全般)
  • 生化学
  • コロイド化学および表面化学

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