METHODS FOR PREPARATION OF ZnTe NANOCRYSTALS
AssigneeLife Technologies Corporation
InventorsEric Tulsky, Joseph Bartel, Joseph Treadway
Life of this patent
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Abstract
Nanocrystals having a ZnTe core and methods for making and using them to construct core-shell nanocrystals are described. These core-shell nanocrystals are highly stable and provide quantum yields and stability suitable for applications such as flow cytometry, cellular imaging, and protein blotting, medical imaging, and other applications where cadmium toxicity is an issue.
Claims52
A semiconductor nanocrystal, comprising:
- a semiconductor core comprising zinc and tellurium;
- and
- a shell comprising zinc and selenium.
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A composition, comprising the population of semiconductor nanocrystals of claim 28, wherein the composition is photochemically and chemically stable and non-toxic to cells or tissue.
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A method to make a ZnTe semiconductor nanocrystal, comprising contacting a Zn2+ salt with a Te0 precursor in a solvent at a temperature that is sufficiently high to induce nanocrystal formation.
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A method to form a ZnSe shell on a ZnTe nanocrystal core, comprising contacting a semiconductor ZnTe core in a solvent with a Zn2+ salt and a Se0 precursor, at a temperature sufficiently high to induce formation of a ZnSe shell on the ZnTe nanocrystal core.
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Dependencies are inferred from the claim text.