Journal ArticleDOI
Crystal structure of the gold nanoparticle [N(C8H17)4][Au25(SCH2CH2Ph)18].
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The crystal structure of the thiolate gold nanoparticle [TOA+][Au25(SCH2CH2Ph)18-], where TOA+ = N(C8H17)4+.Abstract:
We report the crystal structure of the thiolate gold nanoparticle [TOA+][Au25(SCH2CH2Ph)18-], where TOA+ = N(C8H17)4+. The crystal structure reveals three types of gold atoms: (a) one central gold atom whose coordination number is 12 (12 bonds to gold atoms); (b) 12 gold atoms that form the vertices of an icosahedron around the central atom, whose coordination number is 6 (five bonds to gold atoms and one to a sulfur atom), and (c) 12 gold atoms that are stellated on 12 of the 20 faces of the Au13 icosahedron. The arrangement of the latter gold atoms may be influenced by aurophilic bonding. Together they form six orthogonal semirings, or staples, of −Au2(SCH2CH2Ph)3− in an octahedral arrangement around the Au13 core.read more
Citations
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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.
Journal ArticleDOI
Correlating the crystal structure of a thiol-protected Au25 cluster and optical properties.
TL;DR: An unusual single crystal structure of a 25-gold-atom cluster protected by eighteen phenylethanethiol ligands is reported, which violates the empirical golden rule "cluster of clusters", and is in good correspondence with time-dependent density functional theory calculations for the observed structure.
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Atomically Precise Clusters of Noble Metals: Emerging Link between Atoms and Nanoparticles
TL;DR: Luminescence in the visible region, especially by clusters protected with proteins, with a large Stokes shift, has been used for various sensing applications, down to a few tens of molecules/ions, in air and water.
Journal ArticleDOI
The gold–sulfur interface at the nanoscale
TL;DR: This Review discusses the recent progress from the viewpoint of theory and computations, with connections to relevant experiments in the understanding of the molecular structure of the gold-sulfur interface in these systems.
Journal ArticleDOI
A unified view of ligand-protected gold clusters as superatom complexes
Michael Walter,Jaakko Akola,Olga Lopez-Acevedo,Pablo D. Jadzinsky,Guillermo Calero,Christopher J. Ackerson,Christopher J. Ackerson,Robert L. Whetten,Henrik Grönbeck,Hannu Häkkinen +9 more
TL;DR: A unified view of principles that underlie the stability of particles protected by thiolate or phosphine and halide ligands is provided and is best described by a “noble-gas superatom” analogy.
References
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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.
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
Structure of a thiol monolayer-protected gold nanoparticle at 1.1 A resolution
Pablo D. Jadzinsky,Guillermo Calero,Christopher J. Ackerson,David A. Bushnell,Roger D. Kornberg +4 more
TL;DR: The crystallization and x-ray structure determination of a p-mercaptobenzoic acid–protected gold nanoparticle, which comprises 102 gold atoms and 44 p-MBAs, is reported, which is chiral, with the two enantiomers alternating in the crystal lattice.
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Crystal structures of molecular gold nanocrystal arrays
Robert L. Whetten,Marat N. Shafigullin,Joseph T. Khoury,T. Gregory Schaaff,Igor Vezmar,and Marcos M. Alvarez,Angus P. Wilkinson +6 more
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Divide and protect : Capping gold nanoclusters with molecular gold-thiolate rings
TL;DR: The calculated optical spectrum of this species features a large optical gap and a prominently peaked structure, correlating with experimental findings of "molecular-like spectra" of thiolate-protected 1.1 nm gold nanoparticles.