Abstract
Fullerenol-d C 60 (OH) 22-24 was synthesized by the method of direct heterogeneous oxidation of fullerene C 60 , dissolved in o-xylene, by NaOH, dissolved in water, in the presence of interphase catalyst t -(C 4 H 9 ) 4 N OH.Identification of fullerenol-d was provided by: C-H-N elemental analysis, High performance liquid phase chromatography, IR -and Electronic spectroscopy, Mass-spectrometry.The antioxidant properties of aqueous fullerenol-d solutions were investigated against free radicals, generated by hydrogen peroxide and molecular I 2 .Measurement of fullerenol antioxidant activity was based on the potentiometric titration of fullerenol solutions by hydrogen peroxide and molecular I 2 solutions and vice versa with compact Pt as working electrode.As a comparison, the very popular and strong anti-oxidant -ascorbic acid was used.Pourbaix Diagrams (pH -Eh) for hydrogen-oxygen and iodine forms were constructed.Fullerenol-d is a weaker antioxidant than ascorbic acid, but in contrast, fullerenols-d molecules are able to undergo multiply reversible absorption-desorption of some free radicals.