Self-organization of spherical aggregates of palladium nanoparticles with a cubic silsesquioxane

Uniform spherical aggregates of palladium nanoparticles with a mean diameter of 70 nm were produced by stirring of palladium(II) acetate with octa(3-aminopropyi)octasilsesquioxane octahydrochloride (1) as a cubic-linker in methanol at room temperature via self-organized spherical templates of palladium ions and 1. Transmission electron microscopy investigation showed that the highly ordered spherical aggregates were composed of the palladium nanoparticles with a size of 4.0 nm.