Stabilized and chemically functionalized nanoparticles
First Claim
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2. A method of stabilizing nanoparticles selected from the group consisting of semiconductor nanoparticles, metal nanoparticles, and metal salt nanoparticles, the method comprising contacting organic dendrons containing single focal point sulfhydryl groups, with colloidal solutions of semiconductor, metal, and metal salt nanoparticles and allowing the single focal point sulfhydryl groups to react with the surfaces of the semiconductor, metal, and metal salt nanoparticles to obtain stabilized, dendronized, semiconductor, metal, and metal salt nanoparticles.
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Abstract
Dendronization of nano-scale surfaces with focal point reactive dendrons to produce stabilized chemically functionalized nano-particles having quantum dot dimensions.
126 Citations
50 Claims
- 2. A method of stabilizing nanoparticles selected from the group consisting of semiconductor nanoparticles, metal nanoparticles, and metal salt nanoparticles, the method comprising contacting organic dendrons containing single focal point sulfhydryl groups, with colloidal solutions of semiconductor, metal, and metal salt nanoparticles and allowing the single focal point sulfhydryl groups to react with the surfaces of the semiconductor, metal, and metal salt nanoparticles to obtain stabilized, dendronized, semiconductor, metal, and metal salt nanoparticles.
- 3. A method of stabilizing semiconductor, metal, and metal salt nanoparticles, the method comprising contacting organic dendrons containing single focal point phosphine groups, with colloidal solutions of semiconductor, metal, and metal salt nanoparticles and allowing the single focal point phosphine groups to react with the surfaces of the semiconductor, metal, and metal salt nanoparticles to obtain stabilized, dendronized, semiconductor, metal, and metal salt nanoparticles.
- 4. A method of stabilizing nanoparticles selected from the group consisting of semiconductor, metal, and metal salt nanoparticles, the method comprising contacting organic dendrons containing single focal point phosphine oxide groups, with colloidal solutions of semiconductor, metal, and metal salt nanoparticles and allowing the single focal point phosphine oxide groups to react with the surfaces of the semiconductor, metal, and metal salt nanoparticles to obtain stabilized, dendronized, semiconductor, metal, and metal salt nanoparticles.
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5-1. A method according to claim 2 wherein the semiconductor, metal, and metal salt nanoparticles are passivated prior to contacting them with the single focal point functional groups.
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21. A method of stabilizing nanoparticles selected from the group consisting of semiconductor nanoparticles, metal nanoparticles, and metal salt nanoparticles, the method comprising contacting organic dendrons containing single focal point sulfhydryl groups, with colloidal solutions of semiconductor, metal, and metal salt nanoparticles and allowing the single focal point sulfhydryl groups to react with the surfaces of the semiconductor, metal, and metal salt nanoparticles to obtain stabilized, dendronized, semiconductor, metal, and metal salt nanoparticles, wherein the single focal point sulfhydryl group containing dendron is prepared by the method comprising:
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(I) providing a dendrimer have a disulfide core;
(II) reducing the disulfide of the disulfide core dendrimer to form sulfhydryl functional dendrons;
(III) contacting the sulfhydryl functional dendrons with a colloidal solution of nanoparticles to obtain dendronized semiconductor, metal, and metal salt nanoparticles. - View Dependent Claims (22)
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27. A composition of matter, said composition of matter being colloidal solutions selected from the group consisting of semiconductor nanoparticles, metal nanoparticles, and metal salt nanoparticles having outside surfaces, said outside surfaces having attached thereto, dendrons, said attachment comprising a linking group selected from the group consisting of:
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(i) sulfur as the thiol, (ii) thiol in combination with ethylene oxide units, and (iii) phosphorus, wherein the phosphorus is in the form of a group selected from (a) phosphines, and (b) phosphine oxides in combination with ethylene oxide units. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification