Purification of nanocrystal solutions by chromatography
US7794600B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2005 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | May 23, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/84
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method of processing nanocrystals. The method comprises providing a mixture comprising nanocrystals, contaminants and a first solvent in which the nanocrystals are soluble, and using chromatography to reduce the amount of contaminants in the mixture. The method optionally comprises isolating the nanocrystals after chromatography. The method allows for the production of nanocrystal compositions having a total amount of surfactant associated therewith, the amount of surfactant comprising an amount of bound surfactant and an amount of free surfactant in the solvent, the amount of free surfactant being less than about 1% of the total amount of surfactant in the solvent. The present invention, accordingly, also relates to such compositions and corresponding composites of nanocrystals in organic polymer matrices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.