| abstract |
The invention provides a quantum dot ligand, a quantum dot light-emitting device, a preparation method, and a display device. The quantum dot ligand includes: a polyimide ligand, and the polyimide ligand includes a main chain and a branched chain, The branched chain is connected to the main chain, the end of the main chain is connected with a capping group, the end of the branched chain has a coordinating group, and the coordinating group and the quantum dot can pass through a coordination bond For connection, the coordinating group includes at least one of a thiol group, a carboxyl group or an amino group. In the quantum dot ligand of the present invention, the end of the main chain is connected with a capping group, and the coordinating group and the quantum dot can be connected by a coordination bond, which can reduce the surface defects of the quantum dot, and the quantum dot ligand can be introduced into the quantum dot. , By introducing a polyimide structure into the quantum dots, the mechanical stability and radiation stability of the quantum dot film in the device can be effectively improved, the overall stability and performance of the device can be improved, the service life can be prolonged, and the display effect can be improved. |