Single-crystalline metal nanorings and methods for synthesis thereof
US8460428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jul 2, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In various embodiments, methods for synthesizing single-crystalline zero-valent metal nanorings, such as single-crystalline copper nanorings, are described herein. The methods include providing a solution containing a metal cation, a complexing agent bound to the metal cation, thereby forming a metal complex that is at least partially soluble in the solution, and a reducing agent operable for reducing the metal complex to a zero-valent metal and then heating the solution for a sufficient time and at a sufficient temperature until zero-valent metal nanorings form. The solution may be an aqueous solution in an embodiment. Single-crystalline metal nanorings produced by the methods described herein may have a diameter less than about 100 μm and a wall thickness between about 10 nm and about 500 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.