| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 218226 | Journal of Electroanalytical Chemistry | 2015 | 5 Pages |
•Polydapsone was electrochemically synthesized for the first time.•The polymer redox activity exhibits excellent stability in acid solution.•The polymer mediated the electron transfer between Fe3 +/Fe2 + ions and GCE.•The polymer has admittance similar to pure and sulfonated polyanilines.•The polymerization occurs via amino–amino coupling.
ABSTRACTThe electropolymerization of dapsone by anodic oxidation is reported for the first time. The conditions in which a non-conducting oligomeric film or a conductive polymeric film of dapsone is formed are also discussed, based on the scan rate and potential window applied. The cyclic voltammetry of dapsone-polymer presented redox activities that have not been shown before, to the authors' knowledge, demonstrating its high electronic conductivity. The electrochemical impedance response of the dapsone-polymer indicates that their admittance is similar to pure and sulfonated polyanilines, while for the dapsone-oligomers is characteristic of insulating materials. Infrared spectroscopy of both oligomers and polymer supports that the polymerization occurs via amino–amino coupling, since no modifications in the aromatic ring is observed.
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