METHOD FOR HYDROPHILIZATION OF QUANTUM DOTS Russian patent published in 2022 - IPC C09K11/54 B82Y30/00 B82Y40/00 

FIELD: nanotechnology.

SUBSTANCE: invention relates to nanotechnology and can be used in the manufacture of biosensors, analytical and diagnostic systems, biomarkers. The method for hydrophilization of quantum dots includes the deposition of hydrophobic quantum dots coated with zinc sulfide, the first centrifugation and precipitation. After drying, the resulting precipitate is dissolved in a non-polar solvent with the addition of a mercapto compound. Dihydrolipoic acid, thioglycolic acid, mercaptopropionic acid, or 2-mercaptoethanol, or mixtures thereof, are used as mercapto compounds. The resulting solution is treated with ultrasound, after which a second centrifugation is carried out with the separation and drying of the precipitate. Then the precipitate is dispersed in an aqueous solution of sodium hydroxide, tenfold dilution with water is carried out and the dispersion is treated with ultrasound.

EFFECT: reducing the losses of the luminescent material during the hydrophilization of quantum dots and increasing its colloidal stability.

2 cl, 3 dwg, 3 ex