Geodesic
Antioxidant properties of fullerenol-d
Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 6, pp. 798-810.

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Fullerenol-d $\mathrm{C_{60}(OH)_{22-24}}$ was synthesized by the method of direct heterogeneous oxidation of fullerene $\mathrm{C}_{60}$, dissolved in o-xylene, by $\mathrm{NaOH}$, dissolved in water, in the presence of interphase catalyst $[t-(\mathrm{C_4H_9})_4\mathrm{N}]\mathrm{OH}$. Identification of fullerenol-d was provided by: $\mathrm{C-H-N}$ 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 $\mathrm{I}_2$. Measurement of fullerenol antioxidant activity was based on the potentiometric titration of fullerenol solutions by hydrogen peroxide and molecular $\mathrm{I}_2$ 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.
Keywords: fullerenol, antioxidant properties, hydrogen peroxide, Pourbaix Diagrams, platinum electrode.
Mots-clés : iodine 
@article{NANO_2018_9_6_a14,
     author = {D. P. Tyurin and F. S. Kolmogorov and I. A. Cherepkova and N. A. Charykov and K. N. Semenov and V. A. Keskinov and N. M. Safyannikov and Yu. V. Pukharenko and D. G. Letenko and T. A. Segeda and Z. Shaimardanov},
     title = {Antioxidant properties of fullerenol-d},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {798--810},
     publisher = {mathdoc},
     volume = {9},
     number = {6},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a14/}
}
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D. P. Tyurin; F. S. Kolmogorov; I. A. Cherepkova; N. A. Charykov; K. N. Semenov; V. A. Keskinov; N. M. Safyannikov; Yu. V. Pukharenko; D. G. Letenko; T. A. Segeda; Z. Shaimardanov. Antioxidant properties of fullerenol-d. Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 6, pp. 798-810. http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a14/