Articles by Bhanu P. S. Chauhan in JoVE
Generation of Zerovalent Metal Core Nanoparticles Using n-(2-aminoethyl)-3-aminosilanetriol Bhanu P. S. Chauhan1, Swetha Matam1, Qiaxian R. Johnson1, Aarti Patel1, Kelly Moran1, Benjamin Onyechi1 1Department of Chemistry, William Paterson University A novel method for metal core nanoparticle synthesis using a water stable silanol is described.
Other articles by Bhanu P. S. Chauhan on PubMed
Synthesis of Polysiloxane Stabilized Palladium Colloids and Evidence of Their Participation in Silaesterification Reactions Journal of the American Chemical Society. Mar, 2003 | Pubmed ID: 12617645 The role of "Pd" colloids in Pd(OAc)2 -catalyzed silaesterification reactions was investigated. The first example of the generation and utilizations of recyclable polysiloxane network stabilized palladium nanoparticles is described. We also provide the evidence that the silicon polymers play the role of stabilizing agents, preventing the generation of bulk palladium without compromising the activity of the catalyst.
"Polysiloxane-Pd" Nanocomposites As Recyclable Chemoselective Hydrogenation Catalysts Journal of the American Chemical Society. Jul, 2004 | Pubmed ID: 15238006 Polysiloxane-encapsulated "Pd"-nanoclusters were generated by reduction of Pd(OAc)(2) with polymethylhydrosiloxane, which functions as a reducing agent as well as a capping material for production and stabilization of catalytically active "Pd"-nanoparticles. Chemoselective hydrogenation of functional conjugated alkenes was achieved by in-situ- or ex-situ-generated polysiloxane-stabilized "Pd"-nanoclusters under mild reaction conditions in high yields. Electron microscopy, UV-vis, and NMR studies of the reaction mixture during the catalytic transformation were performed and, in conjunction with catalyst poisoning experiments, demonstrated unequivocally the role of polysiloxane-encapsulated "Pd"-nanoclusters as the real catalytic species. The recyclability of the "Pd"-nanoclusters was established by reusing the solid left after the reaction.
Regioselective Synthesis of Multifunctional Hybrid Polysiloxanes Achieved by Pt-nanocluster Catalysis Journal of the American Chemical Society. Apr, 2005 | Pubmed ID: 15839668 The first example of "Pt"-nanocluster-catalyzed regioselective generation of hybrid polymers via attachment of organic functionalities to evenly distributed Si-H bonds of poly(methylhydro)siloxane is described. In addition, participation of Pt-nanoclusters as an active catalyst was evidenced by various spectroscopic techniques during the catalytic transformations.