Al-Shuuchi Y. Nanosized aggregates of C60 in polar solvents: formation, properties and interaction with metal ions

The dissertation is devoted to the nature of the nanosized aggregates of C60 in polar organic solvents and their mixtures with non-polar ones. The formation and ageing of these colloidal species obtained by physical condensation were examined via spectrophotometry, transmission electron microscopy, and dynamic light scattering (DLS). The source of the negative electrical charge of species in polar non-hydrogen bond donor solvents was explained by formation of fullerene anion-radicals. Besides the standard effect of screening of the surface potential of aggregates, the expressed phenomenon of overcharging was registered. This leads in some cases to the appearance of the so-called coagulation zones. The overcharging by multi-charged cations is caused by the poor solvation of the last-named in organic solvents.