Issue 11, 2014

Permeability improvements of electropolymerized polypyrrole films using dissolvable nano-CaCO3 particle templates

Abstract

The electropolymerisation of N-substituted pyrroles on a dissolvable calcium carbonate nanoparticle template was investigated in order to improve the film permeabilities in aqueous solution. After deposition of CaCO3 nanoparticles on the electrode surface, poly(pyrrole-ammonium) or poly(pyrrole-NTA) (NTA: nitrilotriacetic acid) were electrogenerated around the template structures of the electrodes using potentiostatic methods. The dissolution of nanoparticles in acidic medium leads to the formation of nano-porous structures increasing, therefore, the polypyrrole permeability in aqueous solutions. Histidine-tagged glucose oxidase, chosen as an enzyme model, was immobilised on the modified polypyrrole-NTA via the NTA–Cu2+–histidine interactions to validate the proposed method. The described setup led to a twofold increase in the maximum current density from 5 to 10 μA cm−2 after template dissolution.

Graphical abstract: Permeability improvements of electropolymerized polypyrrole films using dissolvable nano-CaCO3 particle templates

Article information

Article type
Communication
Submitted
03 Dec 2013
Accepted
17 Jan 2014
First published
20 Jan 2014

Phys. Chem. Chem. Phys., 2014,16, 5052-5055

Permeability improvements of electropolymerized polypyrrole films using dissolvable nano-CaCO3 particle templates

L. Popescu Mandoc, K. Gorgy, E. Ungureanu, G. Buica, M. Holzinger and S. Cosnier, Phys. Chem. Chem. Phys., 2014, 16, 5052 DOI: 10.1039/C3CP55100H

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