Spectroscopic studies of fullerene clusters in N-methyl-2-pyrrolidone

The studies of the peculiarities of the interaction of C60 with NMP solvent by optical absorption, fluorescence and fluorescence excitation were performed. The results of experiments on the spectroscopy showed a sharp decrease in the optical density of absorption in the region of electronic transitions and a significant decrease in the fluorescence quantum yield of N-methyl-2-pyrrolidone when adding C60. These facts indicate the effective electron capture of solvent molecules by fullerenes. The line shape and position of fluorescence bands indicate the aggregation of C60 complexes with NMP depending on the storage time of solution.