title: Catalytic rate enhancement observed for alkyne hydrocarboxylation using ruthenium carbonyl-capped nanostructures.
abstract: Surface functionalization of Ag nanocubes and nanoparticles with catalytically active ruthenium carbonyl oligomers has been carried out successfully. These functionalized nanostructures catalyze hydrocarboxylation onto terminal alkynes at significantly enhanced rates (33 times) compare to those observed for free ruthenium oligomers. The rate enhancement is facilitated by adsorption of substrates on the surface of the nanoparticles, thus bringing them into close proximity with the catalyst. The size and shape of the Ag nanostructures were retained, indicating that the metallic cores act mainly as a docking site.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
authors.forename: Yuan Yi
authors.initials: YY
authors.lastname: Chong
authors.forename: Wei Bin
authors.initials: WB
authors.lastname: Goh
authors.forename: Sze Tat
authors.initials: ST
authors.lastname: Tan
authors.forename: Wai Yip
authors.initials: WY
authors.lastname: Fan
mesh_terms: D015097:3-Mercaptopropionic Acid / Q000737:chemistry*; D000480:Alkynes / Q000737:chemistry; D002384:Catalysis; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry; D012428:Ruthenium / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000480:Alkynes; D012834:Silver; D012428:Ruthenium; D015097:3-Mercaptopropionic Acid