Rare-earth super-hydrophobic coating capable of keeping fluorescence stability in aqueous solution and preparation method of rare-earth super-hydrophobic coating

Abstract

The invention discloses rare-earth super-hydrophobic coating capable of keeping fluorescence stability in an aqueous solution and a preparation method of the rare-earth super-hydrophobic coating. The preparation method includes the steps of firstly, using a seeded emulsion polymerization method to prepare core-shell nanoparticles with carboxylic on the surface; secondly, dispersing the core-shell nanoparticles in an organic solvent, and then allowing the dispersed core-shell nanoparticles to have complexing reaction with small-molecule ligands and a rare-earth compound to obtain complexing composite nanoparticles; thirdly, evenly dispersing the obtained complexing composite nanoparticles and low-surface-energy polymer particles, then coating on a certain matrix to obtain the super-hydrophobic coating with the micro-nano structure after the solvent volatilizes. The preparation method has the advantages that the rare-earth super-hydrophobic coating prepared by the method can solve the problem that rare-earth materials are prone to quenching when meeting water, the fluorescence strength of the rare-earth super-hydrophobic coating in purified water or the aqueous solution can be kept unchanged, the method is simple, economical and environmentally friendly, and the rare-earth super-hydrophobic coating is promising in application prospect in fields such as fluorescent display equipment and solar cells.

Description

technical field [0001] The invention belongs to the field of rare earth fluorescent and super-hydrophobic coatings, in particular to a rare-earth super-hydrophobic coating with stable fluorescence in aqueous solution and a preparation method thereof. Background technique [0002] Through the study of lotus leaves and rice in nature, it is found that the organic combination of micron and nanostructures on the surface results in a superhydrophobic surface with a contact angle of more than 150° and a rolling angle of less than 10°, thus endowing the superhydrophobic surface with a natural The clean performance and superhydrophobic surface have great prospects in microfluidic systems and biocompatibility due to the special wettability of the surface. [0003] Rare earth materials have excellent optical, electrical and magnetic properties due to their special 4f electronic transitions. However, because rare earth materials are generally inorganic salts, they are unstable in wate...

AI Technical Summary

Problems solved by technology

[0004] In the existing preparation methods, post-treatment is required to modify low surface energy substances, or polymerization is carried out on the substrate, the process is cumbersome and the scope of application is not wide

And there is no report on the influence of the rare earth superhydrophobic coating involved in the present invention on fluorescence when soaked in aqueous solution