Surface Reconstruction by a Coassembly Approach

Abstract

Materials with switchable surfaces,c apable of changing surface properties under external stimuli, are playing apivotal role in many applications,such as tissue engineering, biosensors,a nd drug/protein delivery.I nt his researchs ilica particles with patterned and switchablesurfaces are fabricated. Surface micelles on silica particles are formed by coassembly of polymer brushes and "free" blockc opolymer chains in as elective solvent. The cores of the surface micelles are crosslinked by anthracene photodimerization. After quaternization of the coronae,a mphiphilic surface micelles are prepared. The surface micelles are able to rearrange in different media. After treatment with an organic solvent, the surfaces of silica particles are occupied by hydrophobic polymer components;i na queous solution, the positively charged polymer chains are on the surfaces.T he switching of the surface micelles results in changes in surface composition and wetting behaviors.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Surface Nanostructures Fabricated by Polymerization-Induced Surface Self-Assembly

“…34 The s-micelles with different sizes and morphologies are fabricated on silica particles, and the switching of the s-micelles results in changes in surface chemistry and wetting behaviors. 35,36 In these years, synthesis of BCP nanoparticles by the polymerization-induced self-assembly (PISA) approach has aroused great research interest. 37−40 PISA provides an efficient method to the synthesis of BCP self-assemblies with diverse morphologies at high solid contents.…”