METHOD OF PRODUCING NANOCOMPOSITES BASED ON GOLD NANOPARTICLES COATED WITH SHELL MADE OF SILICON OXIDE AND QUANTUM DOTS Russian patent published in 2016 - IPC C01B33/146 C01G7/00 B82B3/00 B82Y30/00 B82Y40/00 H01S5/327 G01N21/31 

FIELD: nanotechnology.

SUBSTANCE: invention can be used in making spasers, plasmon nanolasers with the fluorescence analysis of nucleic acids, high sensitive detection of DNA, photometric determination of methylamine. First, one prepares the first solution containing gold nanoparticles with a shell made of silicon oxide. Then one prepares a second solution containing quantum dots coated with ligands containing various functional groups. Mixing said solutions to obtain resultant solution containing gold nanoparticles with a shell made of silicon oxide coated with quantum dots. Number of quantum dots is determined by ratio of shell diameter to quantum dot diameter. To obtain the required number of quantum dots on the shell surface its thickness is increased after mixing the first and second solutions by mixing resultant water solution with ethanol and adding ammonium and tetraethoxysilane.

EFFECT: invention makes it possible to control the number of quantum dots on the shell surface.

12 cl, 1 dwg