Nanoparticles passivated with cationic metal-chalcogenide compound
AssigneesAjou University Industry Cooperation Foundation, Samsung Electronics Co., Ltd.
InventorsKyung-sang CHO, Sang-wook KIM, Tae-ho KIM, Dong-hyeok CHOI, Byoung-lyong CHOI
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Abstract
Provided are nanoparticles passivated with a cationic metal-chalcogenide complex (MCC) and a method of preparing the same. A passivated nanoparticle includes: a core nanoparticle; and a cationic metal-chalcogenide compound (MCC) fixed on a surface of the core nanoparticle
Claims20
A cationic metal-chalcogenide compound.
A passivated nanoparticle comprising:
- a core nanoparticle;
- and
- a cationic metal-chalcogenide compound (MCC) fixed on a surface of the core nanoparticle.
A passivated nanoparticle colloid comprising:
- a plurality of passivated nanoparticles, each of the passivated nanoparticles comprising a core nanoparticle and a cationic metal-chalcogenide compound (MCC) fixed on a surface of the core nanoparticle;
- and
- a dispersion medium in which the passivated nanoparticles are dispersed.
A method of preparing a cationic metal-chalcogenide compound, the method comprising:
- reacting a chalcogen element with NaBH4 to form a sodium-chalcogenide compound;
- reacting the sodium-chalcogenide compound with a metal perchlorate to form a metal-chalcogenide perchlorate;
- and
- reacting the metal-chalcogenide perchlorate with ethanolamine to form a metal-chalcogenide compound.
A method of preparing passivated nanoparticles, the method comprising:
- providing a first dispersion, which is a dispersion of nanoparticles having a first organic ligand in a first organic solvent;
- preparing a second solution, which is a solution of a cationic metal-chalcogenide compound in a second organic solvent;
- mixing the first dispersion and the second solution to form a mixed solution;
- and
- stirring the mixed solution thereby exchanging the first organic ligand of the nanoparticles with the cationic metal-chalcogenide compound.
Dependencies are inferred from the claim text.