Abstract:
The disclosure discloses a polyacrylate dispersant, a pigment dispersion, a color photoresist, a color filter substrate and a display device. The polyacrylate dispersant of the disclosure is a polyhedral oligomeric silsesquioxane-modified polyacrylate dispersant prepared by an esterification reaction of a polyacrylate dispersant and polyhedral oligomeric silsesquioxane. Due to a steric hindrance effect of the structure of polyhedral oligomeric silsesquioxane, the polyacrylate dispersant of the disclosure may significantly improve the stability of pigment dispersion when used for dispersing pigment powder. A color photoresist prepared based on the pigment dispersion has a prominent heat resistance, an excellent resolution and a surface smoothness, as well as a low dielectric constant.
Abstract:
The invention discloses a blue quantum dot composite particle and a method for preparing the same, a photoelectric element and a photoelectric device. The blue quantum dot composite particle comprises a core and a shell that covers the core, wherein the core is a blue quantum dot, the shell is formed of a polymer, and the surface of the shell is chemically modified with gold nano-granules. The method for preparing the blue quantum dot composite particle comprises: coating a polymer on the surface of a blue quantum dot via seed emulsion polymerization; modifying the polymer via hydrolysis so as to make the surface thereof have a carboxyl functional group; and combining a gold nano-granule having an amino functional group on its surface with a blue quantum dot having a carboxyl functional group on its surface via chemical coupling, and obtaining a blue quantum dot composite particle. The fluorescence efficiency of the blue quantum dot composite particle according to the invention is very high.