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US-10025000-B2 · Jul 17, 2018 · US
Process for making cyano functionalized gold nanoparticles
US10908092B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10908092-B2 |
| Application number | US-201816157574-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2018 |
| Priority date | Oct 11, 2018 |
| Publication date | Feb 2, 2021 |
| Grant date | Feb 2, 2021 |
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Abstract
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A cyanide-functionalized gold nanoparticle. A method of making cyanide-functionalized gold nanoparticles includes forming an aqueous reaction mixture comprising a gold precursor and glycine, keeping the reaction mixture at about 18° C. to about 50° C. for at least 6 days to provide formation of the cyanide-functionalized gold nanoparticles, and isolating the cyanide-functionalized gold nanoparticles from the reaction mixture. A method of analyzing a sample, comprising contacting cyanide-functionalized gold nanoparticles with the sample and performing an analytical method on the sample. A sensor comprises cyanide-functionalized gold nanoparticles.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of making cyanide-functionalized gold nanoparticles, the method comprising: forming an aqueous reaction mixture comprising a gold precursor and glycine, keeping the reaction mixture at about 18° C. to about 50° C. for at least 6 days to provide formation of the cyanide-functionalized gold nanoparticles, and isolating the cyanide-functionalized gold nanoparticles from the reaction mixture. 2. The method of claim 1 , wherein keeping the reaction mixture about 18° C. to about 50° C. for at least 6 days is done in the dark without stirring. 3. The method of claim 1 , wherein the gold precursor comprises K[AuCl 4 ], chloroauric acid, gold (III) chloride; gold (III) iodide, trichloro(pyridine)gold(III), chloro(triphenylphosphine)gold(I), gold(I) cyanide, gold(III) bromide, gold(I) sulfide, gold(III) hydroxide, chloro(triethylphosphine)gold(I), methyl(triphenylphosphine)gold(I), or a salt thereof. 4. The method of claim 1 , wherein the reaction mixture has a pH of about 7 to about 14. 5. The method of claim 1 , wherein the reaction mixture comprises 0.001 to 1 wt % of the gold precursor, and 0.001 to 1 wt % of the glycine, based on the weight of the reaction mixture. 6. The method of claim 1 , further comprising monitoring the formation of the cyanide-functionalized gold nanoparticles by UV-visible spectroscopy, dynamic light scattering particle analysis, Raman spectroscopy, or a combination comprising at least one of the foregoing. 7. The method of claim 1 , wherein the cyanide-functionalized gold nanoparticles have an average diameter of about 10 to about 200 nm. 8. The method of claim 1 , wherein the cyanide in the cyanide-functionalized gold nanoparticles covers about 0.1% to about 40% of the nanoparticle surface.
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Classifications
Raman scattering · CPC title
starting from liquid metal compounds, e.g. solutions · CPC title
Electrodes · CPC title
Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors · CPC title
Metal or metal coated · CPC title
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- What does patent US10908092B2 cover?
- A cyanide-functionalized gold nanoparticle. A method of making cyanide-functionalized gold nanoparticles includes forming an aqueous reaction mixture comprising a gold precursor and glycine, keeping the reaction mixture at about 18° C. to about 50° C. for at least 6 days to provide formation of the cyanide-functionalized gold nanoparticles, and isolating the cyanide-functionalized gold nanopart…
- Who is the assignee on this patent?
- Suresh Radhika, Murugesan Sankaran, Khabashesku Valery N, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G01N21/658. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 02 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).