A1 Refereed original research article in a scientific journal
Ionic liquids in electrosynthesis and characterization of a polyazulene-fullerene composite
Authors: Österholm A, Kvarnström C, Ivaska A
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication year: 2011
Journal: Electrochimica Acta
Journal name in source: ELECTROCHIMICA ACTA
Journal acronym: ELECTROCHIM ACTA
Volume: 56
Issue: 3
First page : 1490
Last page: 1497
Number of pages: 8
ISSN: 0013-4686
DOI: https://doi.org/10.1016/j.electacta.2010.09.089
Abstract
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.
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.
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