| abstract |
The invention discloses a preparation method of polyurea quantum dot fluorescent microspheres. The preparation method includes: dispersing quantum dots in a multifunctional isocyanate monomer to form an oil phase mixture; adding the oil phase mixture and the crosslinking agent polyamine dropwise into a mixed solvent of acetone and water respectively, and then adding The system is reacted at a certain temperature for a certain time, and then centrifuged and dried to obtain polyurea quantum dot fluorescent microspheres. Thanks to the unique water and oxygen resistance and heat resistance properties of polyurea materials, the stability of the quantum dots embedded in the polyurea microspheres has been greatly improved. Compared with the existing quantum dot coating technology, the method is simple, efficient, and low-cost, and is suitable for industrialized large-scale production. |