Abstract
C60derivatives covalently linked with the nitroxide radical of 2,2,6,6-tetramethylpiperidine-1-oxyl have been synthesized by two methods: C60 reacts with 4-amino-4-carboxy-2,2,6,6-tetramethylpiperidine-1-oxyl (TOAC) and aldehyde; And another new route: C60 reacts with 4-oxo-2,2,6,6-tetramethyl-piperidinyloxy(4-oxo-TEMPO) and amino acid.