Fulleropeptide esters as potential self-assembled antioxidants
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The potential use of amphiphilic fullerene derivatives as a bionanomaterial was investigated by cyclic voltammetry (CV), scanning electron microscopy (SEM), and the ferrous ion oxidation-xylenol orange (FOX) method. Despite the disrupted delocalization of the pi-electronic system over the C-60 sphere, its antioxidant capacity remained high for all twelve derivatives. The compounds expressed up to two-fold and 5-12-fold better peroxide quenching capacity as compared to pristine C-60 and standard antioxidant vitamin C, respectively. During precipitation and slow evaporation of the solvent, all compounds underwent spontaneous self-assembly giving ordered structures. The size and morphology of the resulting particles depend primarily on the sample concentration, and somewhat on the side chain structure.
Keywords:antioxidant activity / cyclic voltammetry / FOX assay / fulleropeptide esters / scanning electron microscopy
Source:Beilstein Journal of Nanotechnology, 2015, 6, 1065-1071
- Beilstein-Institut, Frankfurt Am Main