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*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

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 (US)
Pages (from-to)1188-1192
Number of pages5
JournalACS Sensors
Volume1
Issue number10
DOIs
StatePublished - 2016
Externally publishedYes

Keywords

  • capacitive sensors
  • metal-organic frameworks
  • NH-MIL-53(Al)
  • planar electrodes
  • polymer-MOF composites

ASJC Scopus subject areas

  • Bioengineering
  • Fluid Flow and Transfer Processes
  • Process Chemistry and Technology
  • Instrumentation

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