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Search Publications by: John Pettibone (Fed)

Displaying 26 - 30 of 30

Reaction Network Governing Diphosphine-Protected Gold Nanocluster Formation from Nascent Cationic Platforms

February 16, 2012

Author(s)

John M. Pettibone, Jeffrey W. Hudgens

We identify the reaction network governing gold monolayer protected cluster (MPC) formation during the reduction of Au(PPh 3)Cl and L 5 (L 5 = 1,5-bis(diphenylphosphino)pentane) in solutions. UV-vis spectroscopy and electrospray ionization mass

Predictive Gold Nanocluster Formation Controlled by Metal-Ligand Complexes

January 9, 2012

Author(s)

John M. Pettibone, Jeffrey W. Hudgens

The formation of ligand-protected transition metal nanoclusters in size-selective syntheses is driven by the inherent properties of the protecting ligands. We have previously reported the selective, monodisperse product formation of phosphine protected Au

Reaction Mechanism Governing the Formation of 1,3-bis(diphenylphosphino)propane-protected Gold Nanoclusters

September 19, 2011

Author(s)

Jeffrey W. Hudgens, John M. Pettibone, Thomas P. Senftle, Ryan N. Bratton

This report outlines the determination of a reaction mechanism that can be manipulated to develop directed syntheses of gold monolayer protected clusters (MPCs) prepared by the reduction of solutions containing 1,3-bis(diphenylphosphino)propane (L 3)

Gold cluster formation with phosphine ligands: Etching as a synthetic pathway for size-selective small clusters?

March 7, 2011

Author(s)

John M. Pettibone, Jeffrey W. Hudgens

Triphenylphosphine (PPh3) is commonly used during syntheses of stable closed-shell monolayer protected clusters (MPCs). Models of transition metal (TM) cluster and nanoparticle syntheses commonly assign PPh3 a passive role as a chemical placeholder

Synthetic Approach for Tunable, Size-Selective Formation of Monodisperse, Diphosphine-Protected Gold Nanoclusters

August 10, 2010

Author(s)

John M. Pettibone, Jeffrey W. Hudgens

Most nanoparticle syntheses, including those based on the Brust-Schiffrin method, produce a mixture of different metal core sizes. This report presents a new strategy for controlling the size and dispersity of ultra-small nanoclusters through selection of