Water stable iii-v semiconductor nanocrystal complexes and methods of making same
AssigneeSamsung Electronics Co., Ltd.
InventorsDaniel LANDRY, Wei LUI, Adam PENG
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Abstract
A water-stable semiconductor nanocrystal complex that is stable and has high luminescent quantum yield. The water-stable semiconductor nanocrystal complex has a semiconductor nanocrystal core of a III-V semiconductor nanocrystal material and a water-stabilizing layer. A method of making a water-stable semiconductor nanocrystal complex is also provided.
Claims19
A water-stable semiconductor nanocrystal complex comprising:
- a semiconductor nanocrystal composition comprising:
- a III-V semiconductor nanocrystal core;
- and
- a surface layer comprising molecules having a moiety with an affinity for the semiconductor nanocrystal composition and a moiety with an affinity for a hydrophobic solvent;
- and
- a water-stabilizing layer comprising a diblock polymer that surrounds the semiconductor nanocrystal composition to provide a micelle and having a hydrophobic end for interacting with the surface layer and a hydrophilic end, wherein the water-stable semiconductor nanocrystal complex is electronically and chemically stable with a luminescent quantum yield of at least 45% as measured under ambient conditions.
The water-stable semiconductor nanocrystal complex of 11, wherein the member of the specific binding pair is selected from the group consisting of antibody, antigen, hapten, antihapten, biotin, avidin, streptavidin, IgG, protein A, protein G, drug receptor, drug, toxin receptor, toxin, carbohydrate, lectin, peptide receptor, peptide, protein receptor, protein, carbohydrate receptor, carbohydrate, polynucleotide binding protein, polynucleotide, DNA, RNA, aDNA, aRNA, enzyme, substrate.
A method of making a water-stable semiconductor nanocrystal complex comprising:
- synthesizing a semiconductor nanocrystal core comprising a III-V semiconductor nanocrystal material;
- forming a surface layer either directly or indirectly on the semiconductor nanocrystal core;
- and
- forming a water-stabilizing layer on the surface layer, the water-stabilizing layer having a hydrophobic end for interacting with the surface layer and a hydrophilic end, wherein the water-stable semiconductor nanocrystal complex is electronically and chemically stable with a luminescent quantum yield of at least 45% as measured under ambient conditions.
Dependencies are inferred from the claim text.