Quantum dot nanoparticles having enhanced stability and luminescence efficiency
US10468559B2 · kind B2 · utility
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Key dates
| Filing date | Apr 25, 2017 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Feb 25, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Certain dithio-compounds have been found to be superior capping ligands for quantum dot (QD) nanoparticles. Example dithio-ligands include dithiocarbamate ligands. These strongly binding ligands are capable of coordinating to both positive and negative atoms on the surface of the nanoparticle. The ligands are bi-dentate and thus their approach to the QD surface is not as sterically hindered as is the approach of mono-dentate ligands. These ligands can therefore completely saturate the QD surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.