Processing of nanoparticles
US8501432B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2010 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Aug 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/54346
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Ligand-capped nanoparticles are dispersed in an organic solvent. There is then phase transfer of the nanoparticles introducing into the organic solvent an aqueous solution of polymer surfactant dissolved in water. The organic solvent and the aqueous solution are then mixed until the polymer forms micelles which encapsulate the nanoparticles in assemblies. The resultant nanoparticle assemblies in an aqueous phase may be used for any of a range of desired applications. It has been found that the assembly size can be tuned by control of any or a combination of method parameters such as concentration of polymer surfactant, and/or temperature of the phase change reaction, and/or rate of mixing, such as rotational rate of stirring. The nanoparticle assemblies find particular application as fluorescent biomarkers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.