Patterns of conducting polypyrrole with tunable morphologies

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DOIResolve DOI: http://doi.org/10.1016/j.polymer.2009.06.054
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TypeArticle
Journal titlePolymer
Volume50
Issue13
Pages39383942; # of pages: 5
Subjectpolypyrrole (PPy); pattern; electrochemistry
AbstractAn effective and reliable method was established to fabricate ordered arrays of conducting polypyrrole (PPy) with tunable morphologies. A polydimethylsiloxane (PDMS) stamp was used to lift up the top layer of silica spheres with a closed-packed hexagonal arrangement on a silicon wafer. The lattice spacing of the silica sphere array on the PDMS stamp could be tuned by controlling the swelling of the stamp. Afterwards, the silica spheres were transferred onto a poly(vinyl alcohol) (PVA) film which was pre-spin-coated on an ITO glass. The silica spheres were etched away with hydrofluoric (HF) acid, and the resulting porous PVA film maintained an identical ordered array but of holes. Electrochemical polymerization of pyrrole monomer was carried out with the ITO glass as a working electrode, on which was the PVA film with ordered holes. Different charge densities applied led to PPy patterns with different morphologies; a possible mechanism was addressed.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number16488509
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Record identifiera66955ab-aedf-407b-8091-37376f6039f9
Record created2011-02-15
Record modified2016-05-09
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