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Issue 9, 2016
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Towards metal–organic framework based field effect chemical sensors: UiO-66-NH2 for nerve agent detection

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Abstract

We present a highly sensitive gas detection approach for the infamous ‘nerve agent’ group of alkyl phosphonate compounds. Signal transduction is achieved by monitoring the work function shift of metal–organic framework UiO-66-NH2 coated electrodes upon exposure to ppb-level concentrations of a target simulant. Using the Kelvin probe technique, we demonstrate the potential of electrically insulating MOFs for integration in field effect devices such as ChemFETs: a three orders of magnitude improvement over previous work function-based detection of nerve agent simulants. Moreover, the signal is fully reversible both in dry and humid conditions, down to low ppb concentrations. Comprehensive investigation of the interactions that lead towards this high sensitivity points towards a series of confined interactions between the analyte and the pore interior of UiO-66-NH2.

Graphical abstract: Towards metal–organic framework based field effect chemical sensors: UiO-66-NH2 for nerve agent detection

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Publication details

The article was received on 02 Mar 2016, accepted on 12 May 2016 and first published on 24 May 2016


Article type: Edge Article
DOI: 10.1039/C6SC00987E
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Citation: Chem. Sci., 2016,7, 5827-5832
  • Open access: Creative Commons BY-NC license
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    Towards metal–organic framework based field effect chemical sensors: UiO-66-NH2 for nerve agent detection

    I. Stassen, B. Bueken, H. Reinsch, J. F. M. Oudenhoven, D. Wouters, J. Hajek, V. Van Speybroeck, N. Stock, P. M. Vereecken, R. Van Schaijk, D. De Vos and R. Ameloot, Chem. Sci., 2016, 7, 5827
    DOI: 10.1039/C6SC00987E

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