Neil T Kemp et al 2007 Nanotechnology 18 145610 doi:10.1088/0957-4484/18/14/145610
Neil T Kemp1, Jack W Cochrane and Richard Newbury
Show affiliationsWe demonstrate a technique for the patterning of conducting polyaniline nanowires on metallic substrates. Electrochemical synthesis of template-free polyaniline nanowires is initially preceded by the formation of a thin compact 2D layer, which we show spreads horizontally from the edge of a gold electrode across a SiO2 surface. This encumbers nanowire patterning during the fabrication of nanowire devices since it leads to electrical short-circuiting of the metal contacts before the nanowires have fully developed. In this paper we demonstrate the use of amine-terminated self-assembled monolayers, 3-aminopropyltriethoxysilane, to inhibit the spread of polyaniline growth onto adjacent SiO2 surfaces. The technique has important applications in the fabrication of nanowire devices and area-selective patterning of nanowires on metallic electrodes.
81.16.Rf Nanoscale pattern formation
82.45.Yz Nanostructured materials in electrochemistry
Issue 14 (11 April 2007)
Received 30 November 2006, in final form 5 February 2007
Published 6 March 2007
Neil T Kemp et al 2007 Nanotechnology 18 145610
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