Grygorova G. Properties of hydrosols based on ortovanadate nanocrystals and their interaction with dyes

The thesis is devoted to the influence of various factors on the aggregative stability of REE orthovanadate hydrosols and to the character of interaction of the dispersed phase with organic dyes of different structures. The pH ranges of aggregative stability of hydrosols and Critical Coagulation Concentration of some inorganic electrolytes, surfactants and dyes were determined. The behavior of nanoparticles of hydrosols in physiological environments was investigated. By methods of optical spectroscopy the formation of ordered dye aggregates in the presence of nanoparticles was revealed. The degree of ordering of molecules in aggregate can be controlled by form-factors of nanoparticles. The possibility of using nanoparticles as biological probes was demonstrated.