Polyazulene (PAz) was electrosynthesized in the ionic liquid N,N-butyl-methyl-pyrrolidinium bis(trifluoromethylsulfonyl)imide ([BMP][Tf2N]) and characterized using electrochemical methods. By using [BMP][Tf2N] as the electrolyte we obtained films with improved electrochemical and morphological properties compared to films electrosynthesized in an acetonitrile-based electrolyte solution. Composite films consisting of drop cast Cm and electrosynthesized PAz were also investigated in [BMP][Tf2N] using electrochemical methods. UV-vis and SEM and the results were compared to similar films prepared in acetonitrile. The use of ionic liquids made it possible to study the redox reactions of C-60 at room-temperature and in an extended cathodic potential range. In comparison to pure PAz the presence of C-60 in the composite film improved the charge storing ability. Electrosynthesis in [BMP][Tf2N] resulted in composite films with a lower degree of charge trapping compared to composite films synthesized in organic media. (C) 2010 Elsevier Ltd. All rights reserved.