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Characterizing the Dopant Behavior of Functionalized Carbon Nanotubes in Conducting Polymers

Published online by Cambridge University Press:  01 February 2011

Mark Hughe ,
Graeme A. Snook ,
George Z. Chen ,
Milo S. P. Shaffer ,
Derek J. Fray  and
Alan H. Windle
Mark Hughe
Affiliation:
Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK.
Graeme A. Snook
Affiliation:
Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK.
George Z. Chen
Affiliation:
School of Chemical, Environmental and Mining Engineering, University of Nottingham, Nottingham, NG7 2RD, UK.
Milo S. P. Shaffer
Affiliation:
Department of Chemistry, Imperial College, London, SW7 2AZ, UK.
Derek J. Fray
Affiliation:
Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK.
Alan H. Windle
Affiliation:
Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK.
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Abstract

The electrochemical polymerization of conducting polymers, such as polypyrrole, generally requires the incorporation of an anionic dopant to balance the positive charge on the oxidized conducting polymer chains. The susceptibility of multiwalled carbon nanotube (MWNT) surfaces to functionalization makes them exciting candidates for a new class of dopant for conducting polymers. In this work, the doping of polypyrrole with functionalized MWNTs is investigated using a combination of electrochemical impedance spectroscopy, scanning electron microscopy, and quartz crystal microbalance work. The findings described here are particularly relevant in light of recent reports indicating that carbon nanotube-conducting polymer composites hold great promise for use in electrochemical capacitors, also known as supercapacitors [1,2].

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 788: Symposium L – Continuous Nanophase and Nanostructured Materials , 2003 , L12.11
Copyright
Copyright © Materials Research Society 2004

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References

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