Permeability improvement of electropolymerized polypyrrole films in water using magnetic hydrophilic microbeads

Serge Cosnier, Shou Nian Ding, Aymeric Pellissier, Karine Gorgy, Michael Holzinger, Briza Pérez López, Arben Merkoçi

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

The electrochemical polymerization of polypyrrole films onto magnetically immobilized hydrophilic microbeads was carried out. Poly(pyrrole-pyrene)- microbeads coatings display thus higher permeability in water towards the diffusion of ferrocyanide than a pure poly(pyrrole-pyrene) film. In addition, the modulation of this permeability through an applied magnetic field that attracts the microbeads on the electrode surface or pushes back them was shown. Moreover, a glucose biosensor was prepared by adsorbing and electropolymerizing on a platinum electrode, an aqueous mixture containing glucose oxidase, amphiphilic pyrrole monomer and microbeads attracted by a magnet. The presence of microbeads inside the biocoating, markedly increases the biosensor performance. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
Original languageEnglish
Pages (from-to)887-890
JournalElectroanalysis
Volume21
Issue number7
DOIs
Publication statusPublished - 1 Apr 2009

Keywords

  • Biosensor
  • Electropolymerized film
  • Magnetic microbeads
  • Permeability
  • Poly(pyrrole-pyrene)

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