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Enhancing proton conductivity in a metal–organic framework at T > 80 °C by an anchoring strategy

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Abstract

A new Zr(IV)-based metal–organic framework, termed VNU-23 [Zr6O8(H2O)8(H2SNDC)4], where H2SNDC2− = 4,8-disulfonaphthalene-2,6-dicarboxylate, was synthesized. Subsequently, detailed structural analysis revealed that VNU-23 adopted the bcu topology with a structure characterized by densely packed sulfonic acid groups lining 6 Å channels. With this structural feature, an anchoring strategy was employed to dock the proton transfer agent, histamine, into the void space of VNU-23 to enhance the proton conductivity. Remarkably, the proton conductivity of this material reached 1.79 × 10−2 S cm−1 at 95 °C and 85% relative humidity without any appreciable loss of performance for at least 120 h.

Graphical abstract: Enhancing proton conductivity in a metal–organic framework at T > 80 °C by an anchoring strategy

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Publication details

The article was received on 17 Nov 2017, accepted on 21 Dec 2017 and first published on 21 Dec 2017


Article type: Paper
DOI: 10.1039/C7TA10148A
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Enhancing proton conductivity in a metal–organic framework at T > 80 °C by an anchoring strategy

    M. V. Nguyen, T. H. N. Lo, L. C. Luu, H. T. T. Nguyen and T. N. Tu, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C7TA10148A

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