The present paper focuses on the impact of different electro-synthesis processes, used to produce poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT–PSS) systems in aqueous medium, on the polymer backbone and its electro-catalytic activity. FE-SEM and micro-Raman spectroscopy were used to analyze the samples obtained by varying the conditions of the electro-polymerization processes. The I2/I redox behaviour of various PEDOT–PSS layers has been comparatively examined in relation to the surface morphology and structural characteristics of the polymer. A response similar to that of a conventional Pt electrode has been revealed for the films produced by chronoamperometric technique. The study has demonstrated that the polymer structure plays an important role in the electro-activity, providing a possibility to improve the redox performance of PEDOT–PSS films by a proper choice of the synthesis methods. Moreover, the use of aqueous solution as a reaction medium can be welcomed as a sustainable chemistry way involving the use of environmentally friendly chemicals.
Tamburri, E., Guglielmotti, V., Orlanducci, S., Terranova, M. (2011). structure and I2/I- redox behaviour of PEDOT-PSS films electropolymerized in acqueous medium : implications for convenient counter electrodes in DSSC. INORGANICA CHIMICA ACTA, 377, 170-176 [10.1016/j.ica.2011.08.001].
structure and I2/I- redox behaviour of PEDOT-PSS films electropolymerized in acqueous medium : implications for convenient counter electrodes in DSSC
Tamburri, E;Guglielmotti, V;Orlanducci, S;Terranova, ML
2011-01-01
Abstract
The present paper focuses on the impact of different electro-synthesis processes, used to produce poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT–PSS) systems in aqueous medium, on the polymer backbone and its electro-catalytic activity. FE-SEM and micro-Raman spectroscopy were used to analyze the samples obtained by varying the conditions of the electro-polymerization processes. The I2/I redox behaviour of various PEDOT–PSS layers has been comparatively examined in relation to the surface morphology and structural characteristics of the polymer. A response similar to that of a conventional Pt electrode has been revealed for the films produced by chronoamperometric technique. The study has demonstrated that the polymer structure plays an important role in the electro-activity, providing a possibility to improve the redox performance of PEDOT–PSS films by a proper choice of the synthesis methods. Moreover, the use of aqueous solution as a reaction medium can be welcomed as a sustainable chemistry way involving the use of environmentally friendly chemicals.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
