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Electrochemical synthesis of polypyrrole in ionic liquids
journal contributionposted on 01.03.2004, 00:00 authored by Jenny PringleJenny Pringle, J Efthimiadis, Patrick HowlettPatrick Howlett, Jim Efthimiadis, D MacFarlane, A Chaplin, S Hall, D Officer, G Wallace, Maria ForsythMaria Forsyth
Electrochemical synthesis of inherently conducting polymers such as polypyrrole is traditionally performed in a molecular solvent/electrolyte system such acetonitrile/lithium perchlorate. We report the use of ionic liquids 1-butyl-3-methylimidazolium hexafluorophosphate, 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl) amide and N,N-butylmethylpyrrolidinium bis(trifluoromethanesulfonyl) amide, both as the growth medium and as an electrolyte for the electrochemical cycling of polypyrrole films. Use of the ionic liquid as the growth medium results in significantly altered film morphologies and improved electrochemical activities.