Template Electrochemical Growth of Polypyrrole and Gold-Polypyrrole-Gold Nanowire Arrays
- 1 January 2005
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 152 (9) , D130-D135
- https://doi.org/10.1149/1.1997163
Abstract
In this paper, we report on the synthesis of polypyrrole (PPy) and hybrid (Au-PPy-Au) nanowire arrays of controlled dimension by an all electrochemical template method. PPy nanowires with an average diameter of only 38-160 nm were obtained by electropolymerization in well-defined conditions within the pores of homemade polycarbonate membranes. Characterization by scanning and transmission electron microscopies (SEM and TEM) revealed that the morphology (nanotubes or nanowires) of the resulting PPy nanostructures strongly depended on the electropolymerization conditions. Possible mechanisms responsible for the growth of nanowires vs. nanotubes are discussed. We also describe here a gold electroplating strategy using a homemade cyanide-free bath that was used to prepare high-quality Au nanowires with an inner PPy nanojunction. These Au-electroactive polymer-Au segmented nanowires are promising materials for use in molecular nanoelectronics.Keywords
This publication has 29 references indexed in Scilit:
- Template Fabrication of Protein-Functionalized Gold−Polypyrrole−Gold Segmented NanowiresChemistry of Materials, 2004
- Self-Assembly of Mesoscopic Metal-Polymer AmphiphilesScience, 2004
- Chemical and electrochemical synthesis of polyaniline micro- and nano-tubulesSynthetic Metals, 2000
- Effect of Electrolyte Concentration and Nature on the Morphology and the Electrical Properties of Electropolymerized Polypyrrole NanotubulesChemistry of Materials, 1999
- Template Synthesis of Nanowires in Porous Polycarbonate Membranes: Electrochemistry and MorphologyThe Journal of Physical Chemistry B, 1997
- Electrically conductive polymer fibres with mesoscopic diameters: 2. Studies of polymerization behaviourPolymer, 1995
- Nanomaterials: A Membrane-Based Synthetic ApproachScience, 1994
- Template synthesis of metal microtubule ensembles utilizing chemical, electrochemical, and vacuum deposition techniquesJournal of Materials Research, 1994
- Pore size distributions of nanoporous track-etched membranesNanostructured Materials, 1993
- Template synthesis of polymeric and metal microtubulesAdvanced Materials, 1991