Abstract
Colloidal mesoporous silica nanoparticles asymmetrically capped with non-porous phenylsilsesquioxane have been prepared by adding phenyltriethoxysilane to an aqueous dispersion of mesostructured silica-surfactant composite nanoparticles. The integration of colloidal stability, mesoporosity and the Janus structure is quite promising for materials design applicable in various fields, including catalysis, biomedicine and coatings.
Highlights
Colloidal mesoporous silica nanoparticles asymmetrically capped with non-porous phenylsilsesquioxane have been prepared by adding phenyltriethoxysilane to an aqueous dispersion of mesostructured silica–surfactant composite nanoparticles
The integration of colloidal stability, mesoporosity and the Janus structure is quite promising for materials design applicable in various fields, including catalysis, biomedicine and coatings
Precise design based on the type, size and shape of each component promises a wide range of applications in displays, sensors and drug delivery systems, the easy and large-scale fabrication of Janus particles remains a major challenge
Summary
Synthesis of colloidal Janus nanoparticles by asymmetric capping of mesoporous silica with phenylsilsesquioxane† Colloidal mesoporous silica nanoparticles asymmetrically capped with non-porous phenylsilsesquioxane have been prepared by adding phenyltriethoxysilane to an aqueous dispersion of mesostructured silica–surfactant composite nanoparticles. We report a new class of mesoporous Janus nanoparticles prepared by adding phenyltriethoxysilane (PTES) to a dispersion of colloidal mesostructured silica–surfactant composite nanoparticles (hereafter denoted as CMSS).
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