Abstract
Hyperbranched polymers have attracted considerable research and application interests because of their unique properties, such as low viscosity, favorable solubility, less chain entanglement and better reactivity than linear polymers. Compared with dendrimers, hyperbranched polymers (HBPs) demonstrate special advantages with their easy synthetic accessibility, typically by one pot process, allowing for their production and application on large scale. Specifically, when hyperbranched polymers were used as templates or additives to synthesize nanoparticles, they showed some unique function. E.g., hyperbranched polymers have been used to prepare a thin hexagonal palladium platelet and silver tube, and applied as the stabilizer and monolayer mediation to prepare silver nanoparticle, monodisperse rhodium and platinum nanoparticle. Interconnected silica nanotubes templated by hyperbranched nanowires and smart nanocarriers were also prepared successfully. But the application and synthetic method of hyperbranched polymers/Pt(0) catalyst have not been reported yet. In this paper, the facile preparation and characterization of a novel heterogeneous shape-controllable nano-hyperbranched polymer/Pt(0) catalyst will be presented, and the factors influencing the shape and size of the nano-catalyst and its catalytic activity in hydrosilylation reaction will also be discussed. Experimental
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