Linear sulphonated poly(arylethersulphone) (SPAES) membranes were tested and compared with Nafion, as electrode modifiers for electroanalytical purposes. Different preparation parameters were evaluated: casting solvent, method of drying and storage, polymer ionic moieties counter-ion. In particular, the casting solvent seems to play a key role in the final modified electrode performances. Four solvents characterized by different boiling point and polarity were tested: dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), dimethylsulfoxide (DMSO), N-methylpyrrolidone (NMP). The best electrode, particularly in terms of highest peak currents, was the one prepared using a 1% m/v solution of polymer in NMP, dried at 25 °C in a drying oven. Its performances are explained in terms of a favourable membrane organization enabling a thin layer diffusion and/or a preconcentration mechanism.
Electrodes modified with sulphonated poly(aryl ether sulphone) : effect of casting conditions on their enhanced electroanalytycal performance / L. Falciola, S. Checchia, V. Pifferi, H. Farina, M.A. Ortenzi, V. Sabatini. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 194(2016 Mar 10), pp. 405-412.
|Titolo:||Electrodes modified with sulphonated poly(aryl ether sulphone) : effect of casting conditions on their enhanced electroanalytycal performance|
FALCIOLA, LUIGI (Primo)
CHECCHIA, STEFANO (Secondo)
PIFFERI, VALENTINA (Corresponding)
ORTENZI, MARCO ALDO (Penultimo)
SABATINI, VALENTINA (Ultimo)
|Parole Chiave:||sulphonated poly(arylethersulphone); membrane modified electrodes; casting solvent effect; thin layer diffusion mechanism; preconcentration mechanism|
|Settore Scientifico Disciplinare:||Settore CHIM/05 - Scienza e Tecnologia dei Materiali Polimerici|
Settore CHIM/01 - Chimica Analitica
Settore CHIM/02 - Chimica Fisica
|Data di pubblicazione:||10-mar-2016|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.electacta.2016.02.110|
|Appare nelle tipologie:||01 - Articolo su periodico|