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Quantum dots, methods of producing quantum dots and methods of use of quantum dots

88 Citations2009
Эндрю Уилльям Джон Смит, Шумин Най, Брэд А. Кайрдольф
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A structure comprising a quantum dot is obtained by the method according to one of claims 1-6, wherein the quantumdot includes a layer of amphiphilic polymer disposed on the surface the quantum dot.

Abstract

1. A method for producing a quantum dot, comprising the following steps: a) mixing an amphiphilic polymer dissolved in a non-coordinating solvent with a first precursor to produce a carboxylate precursor; ! b) mixing the carboxylate precursor with a second precursor to obtain quantum dot core; ! c) mixing the core of the quantum dot with a precursor selected from the group consisting of: a third precursor, a fourth precursor, and combinations thereof, to form a coating of the quantum dot on the core of the quantum dot to form a quantum dot, wherein the quantum dot includes a layer of amphiphilic polymer disposed on the surface the quantum dot. ! 2. The method of claim 1, wherein steps a), b) and c) are performed in one reaction vessel. ! 3. The method of claim 1, wherein the amphiphilic polymer is an amphiphilic multidentate polymer. ! 4. The method of claim 3, wherein the amphiphilic multidentate polymer contains aliphatic chains and the carboxylic acid functional groups. ! 5. The method of claim 3, wherein mixing the amphiphilic polymer comprises preparing an amphiphilic multidentate ligand having multiple chelated metal ion first. ! 6. The method of claim 1 wherein the first precursor, the second precursor and the precursor are independently selected from the group consisting of: precursor Cd, precursor Se, Te precursor, the precursor Hg, Pb precursor precursor Zn precursor and S, wherein the first precursor, the second precursor and a precursor different from each other. ! 7. A structure comprising a quantum dot, obtained by the method according to one of claims 1-6. !eight. A method of producing a quantum