Greener process to synthesize water-soluble Mn2+-doped CdSSe(ZnS) core(shell) nanocrystals for ratiometric temperature sensing, nanocrystals, and methods implementing nanocrystals
US9696317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2012 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Aug 18, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Novel Mn2+-doped quantum dots are provided. These Mn2+-doped quantum dots exhibit excellent temperature sensitivity in both organic solvents and water-based solutions. Methods of preparing the Mn2+-doped quantum dots are provided. The Mn2+-doped quantum dots may be prepared via a stepwise procedure using air-stable and inexpensive chemicals. The use of air-stable chemicals can significantly reduce the cost of synthesis, chemical storage, and the risk associated with handling flammable chemicals. Methods of temperature sensing using Mn2+-doped quantum dots are provided. The stepwise procedure provides the ability to tune the temperature-sensing properties to satisfy specific needs for temperature sensing applications. Water solubility may be achieved by passivating the Mn2+-doped quantum dots, allowing the Mn2+-doped quantum dots to probe the fluctuations of local temperature in biological environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.