Polymer−metal organic framework composite films as affinity layer for capacitive sensor devices

Sumit Sachdeva, Dimitri Soccol, Dirk J. Gravesteijn, Freek Kapteijn, Ernst J.R. Sudhölter, Jorge Gascon, Louis C.P.M. de Smet

    Research output: Contribution to journalArticleAcademicpeer-review

    29 Citations (Scopus)

    Abstract

    We report a simple method for sensor development using polymer-MOF composite films. Nanoparticles of NH2-MIL-53(Al) dispersed in a Matrimid polyimide were applied as a thin film on top of capacitive sensor devices with planar electrodes. These drop-cast films act as an affinity layer. Sensing studies carried out with methanol vapor using impedance spectroscopy demonstrate that the presence of MOF enhances the overall response and lowers the detection limit compared to MOF-free polymer films and bare devices. This can be understood by additional changes of the local polarity of the composite films due to higher adsorption of methanol by the porous MOF particles. We expect that this work will stimulate the design of composite polymeric affinity layers for a range of analytes by a proper choice of dispersed MOF particles.
    Original languageEnglish
    Pages (from-to)1188-1192
    Number of pages5
    JournalACS sensors
    Volume1
    Issue number10
    DOIs
    Publication statusPublished - 27 Sep 2016

    Keywords

    • Metal−organic frameworks
    • Planar electrodes
    • NH2-MIL-53(Al)
    • Polymer-MOF composites
    • Capacitive sensors

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