Solvents and new method for the synthesis of CdSe semiconductor nanocrystals
US7998271B2 · kind B2 · utility
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46Claims
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Key dates
| Filing date | Nov 19, 2004 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Jan 12, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/605
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
New methods for the synthesis of nanocrystals/quantum dots are disclosed. The methods comprise use of reasonably-priced and commercially available heat transfer fluids (such as Dowtherm® A) as solvents to synthesize CdSe nanocrystals. Separation of nucleation and growth is achieved by quenching the reaction solution with relatively cold (room temperature) solvent to lower the solution temperature. Quenching may be followed by raising the solution temperature, to allow controlled growth to take place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.