Issue 45, 2015

Use of a protic salt for the formation of liquid-crystalline proton-conductive complexes with mesomorphic diols

Abstract

We herein report that molecular assembly of wedge-shaped mesomorphic diols and a protic salt results in the formation of anhydrous one-dimensional (1D) and 2D proton-conductive materials. The protic salt has been obtained by stoichiometric neutralization of imidazole with benzenesulfonic acid. The protic salt is incorporated into the hydrogen-bonded networks of the hydroxyl groups of the mesomorphic diols. This confined protic salt in the nanochannels exhibits enhanced ionic conductivities by three-orders of magnitude compared with those of the pure protic salt in the solid state, indicating that the imidazolium salt forms a mobile state in the liquid-crystalline nanostructures. These self-assembled and ordered materials based on protic salts may be promising candidates for the application as anhydrous proton-conducting electrolytes in fuel cells.

Graphical abstract: Use of a protic salt for the formation of liquid-crystalline proton-conductive complexes with mesomorphic diols

Supplementary files

Article information

Article type
Paper
Submitted
15 Aug 2015
Accepted
29 Sep 2015
First published
29 Sep 2015
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. A, 2015,3, 22656-22662

Author version available

Use of a protic salt for the formation of liquid-crystalline proton-conductive complexes with mesomorphic diols

A. Yamashita, M. Yoshio, B. Soberats, H. Ohno and T. Kato, J. Mater. Chem. A, 2015, 3, 22656 DOI: 10.1039/C5TA06414G

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