Photoelectrochemical Synthesis of Polypyrrole on Anodic Ta2O5 Films

Francesco Di Quarto, Viviana Figa', Monica Santamaria, Di Quarto, Santamaria, Patrizia Bocchetta

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14 Citazioni (Scopus)


Polypyrrole film was photoelectrochemically grown on insulating Ta2O5 anodic film in acetonitrile solution. A characterization byphotocurrent spectroscopy PCS of metal/oxide/polypyrrole interface was carried out. The PCS results suggest that a metallic-likePPy is formed under illumination at constant anodic potential. By polarizing the polypyrrole at cathodic potentials a photocurrentspectrum typical of p-type semiconducting film was recorded. A scanning electron microscopy study of PPy surfaces solution sideand oxide side allowed us to obtain information on the morphology of the polymer as well as a rough estimate of the film thicknessand of the diameter of PPy globules at the two interfaces.
Lingua originaleEnglish
pagine (da-a)H305-H308
Numero di pagine4
RivistaElectrochemical and Solid-State Letters
Stato di pubblicazionePublished - 2007

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1600.1606???
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