Tuesday, May 20, 2008 - 11:25 AM
Library Building, Rm LB-6 (Queensborough Community College)
372

Selective Olefin and Polyolefin Stiching to Silicon

Bhanu P. S. Chauhan*, Alok Sarkar, and Bharthi Balagam. Engineered Nanomaterials Laboratory, William Paterson University, Wayne, NJ

Nanoparticle synthesis is a very fascinating and fast developing field of research due to the applications of resulting materials. One of the major difficulties in this endeavor is to obtain isolable and catalytically active nanoparticles in multigram scale. In the field of catalysis, nanoparticles have gained interest due to their vital characteristics such as redispersibility and recyclability.

Recently, our laboratory has been developing new strategies for the generation of catalytically active metal nanoparticles.1, 2, 3 We have been able to generate and stabilize a fair number of late transition metal nanoparticles via this strategy. In this presentation, we will present catalytic utility of nanoparticles to tailor olefins to silicon molecules via hydrosilylation reactions. We will demonstrate that a fair number of electronically and sterically varied olefins were quantitatively and regioselectively grafted to Si-H containing silicone molecules and oligomers. Furthermore, hybrid nanoarchitectures were generated by selective incorporation of olefin based polymers on predefined nanostructures, such as Octakis(dimethylsiloxy)-T8-silsesquioxane (Q8M8H) and 1,3,5,7 Tetramethylcyclo-tetrasiloxane (D4H).

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[1]Chauhan, B. P. S.; Rathore, J. S., Chauhan, M. and Krawicz, A. J. Am. Chem. Soc. 2003, 125, 2876.[2] Chauhan, B. P. S.; Rathore, J. S. J. Am. Chem. Soc. 2005, 127, 5790-5791.[3]Chauhan, B.P.S.; Balagam, B. Macromolecules 2006, 39, 2010-2012.