J
Joseph T. Khoury
Researcher at Georgia Institute of Technology
Publications - 13
Citations - 5473
Joseph T. Khoury is an academic researcher from Georgia Institute of Technology. The author has contributed to research in topics: Nanocrystal & Colloidal gold. The author has an hindex of 12, co-authored 13 publications receiving 5335 citations.
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Journal ArticleDOI
Optical Absorption Spectra of Nanocrystal Gold Molecules
Marcos M. Alvarez,Joseph T. Khoury,T. Gregory Schaaff,Marat N. Shafigullin,Igor Vezmar,Robert L. Whetten +5 more
TL;DR: The optical absorption spectra of a series of nanocrystal gold molecules, passivated by a compact monolayer of n-alkylthiol(ate)shave have been measured across the electronic range (1.1−4.0 eV) in dilute solution at ordinary temperature as mentioned in this paper.
Journal ArticleDOI
Nanocrystal gold molecules
Robert L. Whetten,Joseph T. Khoury,Marcos M. Alvarez,Srihari Murthy,Igor Vezmar,Zhong Lin Wang,Peter W. Stephens,Charles L. Cleveland,W. D. Luedtke,Uzi Landman +9 more
TL;DR: In this article, a series of gold nanocrystals, passivated by self-assembled monolayers (SAMs) of straight-chain alkylthiolate molecules (RS, R) are described.
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Gold nanoelectrodes of varied size: Transition to molecule-like charging
Shaowei Chen,Roychelle S. Ingram,Michael J. Hostetler,Jeremy J. Pietron,Royce W. Murray,Royce W. Murray,T. Gregory Schaaff,Joseph T. Khoury,Marcos M. Alvarez,Robert L. Whetten +9 more
TL;DR: A transition from metal-like double-layer capacitive charging to redox-like charging was observed in electrochemical ensemble Coulomb staircase experiments on solutions of gold nanoparticles of varied core size, consistent with new near-infrared spectroscopic data showing an emerging gap between the highest occupied and lowest unoccupied orbitals.
Journal ArticleDOI
Isolation of Smaller Nanocrystal Au Molecules: Robust Quantum Effects in Optical Spectra
T. G. Schaaff,Marat N. Shafigullin,Joseph T. Khoury,Igor Vezmar,Robert L. Whetten,William G. Cullen,Phillip N. First,Gutierrez-Wing C,J. Ascensio,Miguel Jose-Yacaman +9 more
TL;DR: In this article, five massive gold-cluster molecules have been isolated in high yield and have undergone separate structural characterization, and their electronic structure has been deduced by optical absorption spectroscopy.