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Fullerene Film Electrodes in Aqueous Solutions. Part 1. Preparation and Electrochemical Characterization.-Solution cast C60 films on gold and vitreous carbon substrates can be reduced in 1M NaOH solutions to produce conductive films which are relatively stable even in air. Their electrochemical activity decreases only slowly on exposure to air. The conductive films can be converted to poorly conducting or insulating layers by electrochemical oxidation at potentials above + 600 mV. The oxidation process is independent of the solution pH. Below this potential the films can be used as electrodes exhibiting individual properties as electrocatalysts. - (SZUCS, A.; LOIX, A.; NAGY, J. B.; LAMBERTS, L.; J. Electroanal. Chem. 397 (1995) 1-2, 191-203; Lab. Electrochim. Chim. Anal., Fac. Univ. Notre-Dame de la Paix, B-5000 Namur, Belg.; EN)