Journal ArticleDOI
Electrochemical resolution of 15 oxidation states for monolayer protected gold nanoparticles.
TLDR
The first observation of 15 voltammetric quantized charging peaks for a solution of hexanethiol-capped gold nanoparticles (so-called monolayer protected clusters MPCs) at room temperature is reported where the variation in peak spacing with increasing charge stored in the metal core is discussed in terms of MPC capacitance.Abstract:
The first observation of 15 voltammetric quantized charging peaks for a solution of hexanethiol-capped gold nanoparticles (so-called monolayer protected clusters MPCs) at room temperature is reported where the variation in peak spacing with increasing charge stored in the metal core is discussed in terms of MPC capacitance.read more
Citations
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Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology.
TL;DR: A review of gold nanoparticles can be found in this article, where the most stable metal nanoparticles, called gold colloids (AuNPs), have been used for catalysis and biology applications.
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Self-assembled monolayers of thiolates on metals as a form of nanotechnology.
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Gold nanoparticles in chemical and biological sensing.
TL;DR: The advent of AuNP as a sensory element provided a broad spectrum of innovative approaches for the detection of metal ions, small molecules, proteins, nucleic acids, malignant cells, etc. in a rapid and efficient manner.
Journal ArticleDOI
Atomically Precise Colloidal Metal Nanoclusters and Nanoparticles: Fundamentals and Opportunities
TL;DR: This review summarizes the major progress in the field, including the principles that permit atomically precise synthesis, new types of atomic structures, and unique physical and chemical properties ofatomically precise nanoparticles, as well as exciting opportunities for nanochemists to understand very fundamental science of colloidal nanoparticles.
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Glutathione-Protected Gold Clusters Revisited: Bridging the Gap between Gold(I)−Thiolate Complexes and Thiolate-Protected Gold Nanocrystals
TL;DR: It is proposed that a series of the isolated Au:SG clusters corresponds to kinetically trapped intermediates of the growing Au cores, and it is revealed that the subnanometer-sized Au clusters thiolated constitute a distinct class of binary system which lies between the Au(I)-thiolate complexes and thiolate-protected Au NCs.
References
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Journal ArticleDOI
Synthesis of thiol-derivatised gold nanoparticles in a two-phase liquid-liquid system
TL;DR: Using two-phase reduction of AuCl4 by sodium borohydride in the presence of an alkanethiol, solutions of 1-3 nm gold particles bearing a surface coating of thiol have been prepared and characterised; this novel material can be handled as a simple chemical compound as mentioned in this paper.
Journal ArticleDOI
Monolayer-Protected Cluster Molecules
TL;DR: The present state of the rapidly emerging field of monolayer-protected cluster (MPC) molecules with regard to their synthesis andmonolayer functionalization, their core and monolayers structure, their composition, and their properties is evaluated.
Journal ArticleDOI
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
Chronoamperometric current at finite disk electrodes
David Shoup,Attila Szabo +1 more
TL;DR: In this paper, the chronoamperometric current at a stationary finite disk electrode is studied using both analytical and digital simulation techniques, and the exact long-time expansion of the current is obtained and its short-time behavior is considered.
Journal ArticleDOI
Quantized double-layer charging of highly monodisperse metal nanoparticles.
TL;DR: Unprecedented resolution of electrochemically observed quantized double layer (QDL) charging is described with use of reduced solution temperatures and with an annealing procedure that produces hexanethiolate monolayer protected gold clusters (C6 MPCs) with a high level of monodispersity in charging capacitance, C(CLU).