Behavior of C70 Fullerene in a Binary Mixture of Xylene and Tetrahydrofuran

The self-organization properties of C-70 fullerene molecules in a xylene/tetrahydrofuran binary mixture were studied for the first time by optical absorption, refractometry, and dynamic light scattering. A correlation has been established between the change in the refractive index of the C-70/xylene/tetrahydrofuran solution and the degree of self-organization of C-70 molecules in the medium at various concentrations and storage periods of the solution. It is shown that the features of the optical absorption spectrum of C-70/xylene/tetrahydrofuran at a fixed low concentration of fullerene are sensitive to its storage time. It was determined that the beginning time of the formation of C-70 nanoclusters and their final size depend on the degree of concentration of fullerene and the time spent keeping the solution. The observed nature of the C-70 fullerene solution in a binary mixture may help to elucidate its mechanism of self-organization in the future.