Transition metal containing gels are of high importance due to their applications as catalysts, magnetic materials, optic sensors, and electrochemical devices.  Among the various �chimie douce� strategies, sol-gel process is a prolific route to produce the size and shape controlled metal particles under mild reaction conditions. Recently, our studies are directed towards the pre- or post complexed gelification  (polymerization) of aminosilanes in presence of  metal complexes. It is our expectation, that such a strategy will provide metal containing monolithic materials, which will have superior stability against leakage of the metallic particles because of the covalent linkage between the silane and metal particles.In this poster, we will disclose the results of our experiments, where various ratios of bis(triethoxy silylpropyl) amines are copolymerized with metal carbonyls to produce transition metal carbonyl gels.  The reaction conditions were very mild and most of the reactions led to quantitative formation of the metallic gels in three to four days. These gels were analyzed by IR, UV-VIS and NMR Spectroscopy The morphological studies were carried out using the TEM (Transmission Electron Microscopy) SEM (Scanning Electron Microscopy) and AFM (Atomic Force Microscopy). In addition, we will also present the results of our preliminary studies of the thermal and catalytic properties of these materials.

Convenient route to colloidal metallic-silica gel composites

244th National Meeting (2012)

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