Abstract
To utilize the radical scavenging property of fullerene (C60), hydrophilic poly(ethylene glycol) (PEG) was chemically attached by Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC). The resulting C60-PEG derivatives were soluble in methanol when the molecular weight of PEG was 5,000. The antioxidative activity was evaluated for the alcohol-soluble C60 derivative. The C60-PEG has sufficient antioxidative activity with the β-carotene-attributed chromaticity of 76% for the C60-PEG derivative (9.96 mM). Further chemical modification will produce water-soluble fullerenes with higher antioxidative activities.
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