Patents by Inventor Jakub CICHOS

Jakub CICHOS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for preparing water-dispersible quantum dots, colloid and a method for preparing the colloid
    Patent number: 10442988
    Abstract: The method for preparing water-dispersible core-shell quantum dots stabilized with a layer of hydrophilic surface ligands includes making a core of PbS nanocrystals, and obtaining the shell of CdS layer and the surface ligands of dithiocarbamates obtained by reacting amino acids with carbon disulphide, while maintaining the photoluminescence. The emulsion formed of an aqueous solution of amino acid and carbon disulphide includes adding a solution of PbS/CdS in chloroform (CHCl3). Then, the contents are stirred vigorously for at least 20 hours, then the phases are separated. The upper, aqueous phase, being a solution of PbS/CdS/DTC-amino acid residue, is subjected to purification. The present invention is also colloid and a method for preparing colloid.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: October 15, 2019
    Assignee: UNIWERSYTET WROCLAWSKI
    Inventors: Jakub Cichos, Miroslaw Karbowiak
  • METHOD FOR PREPARING WATER-DISPERSIBLE QUANTUM DOTS, COLLOID AND A METHOD FOR PREPARING THE COLLOID
    Publication number: 20170044430
    Abstract: The method for preparing water-dispersible core-shell quantum dots stabilized with a layer of hydrophilic surface ligands includes making a core of PbS nanocrystals, and obtaining the shell of CdS layer and the surface ligands of dithiocarbamates obtained by reacting amino acids with carbon disulphide, while maintaining the photoluminescence. The emulsion formed of an aqueous solution of amino acid and carbon disulphide includes adding a solution of PbS/CdS in chloroform (CHCl3). Then, the contents are stirred vigorously for at least 20 hours, then the phases are separated. The upper, aqueous phase, being a solution of PbS/CdS/DTC-amino acid residue, is subjected to purification. The present invention is also colloid and a method for preparing colloid.
    Type: Application
    Filed: November 19, 2015
    Publication date: February 16, 2017
    Inventors: Jakub CICHOS, Miroslaw KARBOWIAK