Investigation of C60/NMP and C60/NMP/xylene solutions by absorption spectroscopy and dynamic light scattering

The behavior of intermolecular interactions in fresh and aged solutions fullerene C60 neat N-methyl-2-pyrrolidone (NMP), as well NMP/xylene mixed solvents, were studied by the methods ultraviolet-visible spectroscopy dynamic light scattering (DLS). It has been experimentally shown that aging C60/NMP solution leads to disappearance characteristic maximum molecular absorption at ∼330 nm with smoothing, an increase optical intensity. latter depend on formation “C60- NMP”complexes, transition molecules nanocluster state. Increasing xylene content significant changes charge transfer between solute solvent (“C60-NMP”, “C60-C60”) a fixed concentration fullerene. reorganization nanoparticles, which proceeds destruction complexes. In this case, using DLS method, it was found geometric dimensions synthesized nanoclusters decrease.