Quantum dot surface ligand exchange method
US11214732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2018 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Jul 10, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y40/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is a quantum dot surface ligand exchange method. The method comprises the steps: pre-treating proton-containing ligands using a deprotonating agent to obtain deprotonated ligands; mixing a pre-prepared quantum dot solution having original ligands with the deprotonated ligands, after stirring for a predetermined amount of time at room temperature, a ligand exchange reaction occurring, and after washing, obtaining a quantum dot having the deprotonated ligands on the surface. The quantum dot ligand exchange method has a high reaction rate and is easy to operate; after the ligand exchange, the deprotonated ligands firmly bind to cations on the surface of the quantum dot, and after the ligand exchange, the quantum dot provides a stable colloidal solution, and has good solubility and high luminous efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.