METHOD OF INSERTING QUANTUM DOTS INTO POROUS CALCIUM CARBONATE PARTICLES BY CODEPOSITION Russian patent published in 2014 - IPC C01F11/18 C09K11/00 B01J13/22 B82B3/00 B82Y5/00 B82Y30/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: porous calcium carbonate particles are formed from the reaction CaCl₂+2NaHCO₃→CaCO₃↓+2NaCl+2H⁺, wherein an aqueous solution of quantum dots, modified with an excess amount of mercaptoacetic having concentration of 0.05-4 mg/ml, is added to 0.3 M NaHCO₃ solution while stirring intensely. The obtained suspension which contains porous calcium carbonate particles with inserted quantum dots is washed 1-3 times with water and once with ethanol, while treating with ultrasound after each washing. The obtained particles are then coated with polyethyleneimine or 6 layers of water-soluble polyelectrolytes from a series which includes diethylaminoethyl-dextran, chitosan, carrageenan.

EFFECT: shorter time for producing porous calcium carbonate particles with 100% inserted quantum dots.

2 cl, 6 ex