METHOD OF PRODUCING STABLE COLLOIDAL SOLUTION OF CADMIUM SULPHIDE NANOPARTICLES IN MEDIUM OF ACRYLIC MONOMERS Russian patent published in 2012 - IPC C01G11/02 B01J13/00 C08K3/10 B82B1/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. Further polymerisation of the obtained dispersions enables to obtain block optically transparent fluorescent composite materials. The invention can be used in making diode lasers, light sources, light filters, displays, nonlinear absorption media, photodetectors and in other fields where conversion of energy is necessary. The method involves preparation of a solution containing cadmium salts dissolved in acrylic monomers, and adding a solution of hydrogen sulphide in methyl methacrylate, with simultaneous stirring and irradiation of the reaction medium with UV radiation. The precursor which is added to the methyl methacrylate medium is cadmium carbonate which is pre-dissolved in methacrylic acid and the reaction medium is additionally blown at the moment of illumination and adding hydrogen sulphide to methyl methacrylate with argon gas for 1 min at a rate of 0.2 l/min. The methyl methacrylate (MMA) comonomer used can be a second monomer of 2-hydroxyethyl methacylate (HEMA), with the weight ratio of components MMA_(1-X):HEMA_X, where 0<x≤1.

EFFECT: obtaining block optically transparent fluorescent composite materials.