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.
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