Dendrimer-encapsulated metal nanoparticles and their applications to catalysis

来自 dx.doi.org

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阅读量：

123

作者：

Y Niu

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摘要：

This account describes the synthesis, characterization, and applications to catalysis of dendrimer-encapsulated metal nanoparticles (DEMNs). These materials are synthesized by a template approach in which metal ions are sorbed into the interior of dendrimers and then subsequently chemically reduced to yield nearly size-monodisperse, zero-valent metal particles having dimensions of less than 4 nm. The dendrimer component of these composites serve not only as a template for preparing the nanoparticle replica, but they also stabilize the nanoparticle, make it possible to tune solubility, and enhance catalytic selectivity. These materials have been used for a broad range of catalytic reactions, including hydrogenations, Heck coupling, and Suzuki reactions, in water, organic solvents, biphasic fluorous/organic solvents, and supercritical CO 2. In many cases it is very simple to recycle the dendrimer-encapsulated catalysts. In addition to monometallic DEMNs, bimetallic materials have also recently been prepared and their catalytic properties are reported. To cite this article: Y. Niu et al., C. R. Chimie 6 (2003).

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关键词：

dendrimers nanostructures catalysis hydrogenation molecular rulers recycling

DOI：

10.1016/j.crci.2003.08.001

被引量：

1613

年份：

2004