Alidzhanov E.K., Lantukh Yu.D., Pashkevitch S.N., Razdobreev D.A., Bubnov V.P., Kareev I.E.
THE FORMATION OF ENDOMETALLOFULLERENES LANTHANIDES CLUSTERS IN SOLVENT AND ON THE SOLID SURFACE ^{[№ 13 ' 2015]}
The formation of the clusters in solution and on a solid surface can significantly modify the photophysical properties of the studied systems. Process of endometallofullerenes (EMFs) lanthanides (La, Gd, Ce) clusters formation in the polar solvent (dimethylformamide  — DMF) and on the mica surface by static and dynamic light scattering methods as well as atomic force microscopy was investigated. It is shown that endometallofullerenes in the solvent and on the mica surface form a stable system of nanoclusters with predominant dimension 50–60 nm. The combination of the methods of dynamic and static light scattering allowed us to estimate the molar mass of the scattering centers. Based on these data, the conclusion about the fractal nature of the EMF clusters and the estimation of their fractal dimension d ≈ 2.3 has been done. Zeta-potential of the EMF clusters in the DMF solution was measured. It is shown that the EMFs clusters have a negative charge and its zeta-potential value is –30 mV.