SERS substrates formed by hydroxylamine seeding of colloidal metal nanoparticle monolayers
US6624886B2 · kind B2 · utility
25Cited by
3References
8Claims
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Key dates
| Filing date | May 13, 2002 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | May 13, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y30/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods for preparing colloidal metal nanoparticles, in which seed colloids are added to a solution of reductant mixed with a solution containing a source of metal ions, include a method in which the seeds are colloidal gold nanoparticles, the source of gold ions is HAuCl4, and the reductant is NH2OH. SERS substrates are prepared by combining a colloidal gold monolayer with a solution containing a source of metal ions and a reductant such as NH2OH.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.