Consumption kinetics of N-monosubstituted amino acid fullerene C60 derivatives in reactions with peroxy radicals in aqueous colloidal solutions

The kinetics of N-(monohydrofullerenyl)-L-alanine and N-(monohydrofullerenyl)-D-alanine consumption during interaction with alkylperoxy radicals in aqueous colloidal solutions were recorded. The covalent attachment of radicals to the fullerene ‘core’ was confirmed by IR spectroscopy. It was found that the antiradical activity of fullerene derivatives initially quickly declines but does not further tend to zero, remaining at a significant level for a long time, which is probably due to another inhibition mechanism realized through free radical adsorption on nanoparticles followed by recombination.