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

Journal Article (2016)
Author(s)

S. Sachdeva (TU Delft - OLD ChemE/Organic Materials and Interfaces)

D Soccol (NXP Semiconductors)

D Gravesteijn (University of Twente)

F Kapteijn (TU Delft - ChemE/Catalysis Engineering)

Ernst J. R. Sudholter (TU Delft - OLD ChemE/Organic Materials and Interfaces)

J Gascon (TU Delft - ChemE/Catalysis Engineering)

LCPM De Smet (TU Delft - OLD ChemE/Organic Materials and Interfaces)

Research Group
OLD ChemE/Organic Materials and Interfaces
DOI related publication
https://doi.org/10.1021/acssensors.6b00295
More Info
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Publication Year
2016
Language
English
Research Group
OLD ChemE/Organic Materials and Interfaces
Issue number
10
Volume number
1
Pages (from-to)
1188-1192

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.

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