Facile, Large-Scale Synthesis of Dodecanethiol-Stabilized Au38 Clusters
- 12 February 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry A
- Vol. 113 (16), 4281-4284
- https://doi.org/10.1021/jp810893w
Abstract
It has long been a major challenge to achieve synthetic control over size and monodispersity of gold thiolate nanoclusters. Among the reported Aun thiolate clusters, Au38 has been shown to be particularly stable but was only obtained as a minor product in previous syntheses. In this work, we report a bulk solution synthetic method that permits large-scale, facile synthesis of truly monodisperse Au38 nanoclusters. This new method explores a two-phase ligand exchange process utilizing glutathione-capped Aun clusters as the starting material. The ligand exchange process with neat dodecanethiols causes gold core etching and secondary growth of clusters, and eventually leads to monodisperse Au38 clusters in high purity, which eliminates nontrivial postsynthetic separation steps. This method can be readily scaled up to synthesize Au38(SC12H25)24 in large quantities and thus makes the approach and Au38 nanoclusters of broad utility.Keywords
This publication has 37 references indexed in Scilit:
- Nanosized Pd37(CO)28{P(p-Tolyl)3}12 Containing Geometrically Unprecedented Central 23-Atom Interpenetrating Tri-icosahedral Palladium Kernel of Double Icosahedral Units: Its Postulated Metal-Core Evolution and Resulting Stereochemical ImplicationsJournal of the American Chemical Society, 2008
- Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO OxidationScience, 2008
- Selective oxidation with dioxygen by gold nanoparticle catalysts derived from 55-atom clustersNature, 2008
- Ag Nanocluster Formation Using a Cytosine Oligonucleotide TemplateThe Journal of Physical Chemistry C, 2006
- Colloidal Gold Nanoparticles as Catalyst for Carbon−Carbon Bond Formation: Application to Aerobic Homocoupling of Phenylboronic Acid in WaterLangmuir, 2004
- Magic-Numbered Aun Clusters Protected by Glutathione Monolayers (n = 18, 21, 25, 28, 32, 39): Isolation and Spectroscopic CharacterizationJournal of the American Chemical Society, 2004
- Template Guided Self-Assembly of [Au55] Clusters on Nanolithographically Defined Monolayer PatternsNano Letters, 2002
- Giant Gold−Glutathione Cluster Compounds: Intense Optical Activity in Metal-Based TransitionsThe Journal of Physical Chemistry B, 2000
- Gold–ATPJournal of Structural Biology, 1999
- Isolation and Selected Properties of a 10.4 kDa Gold:Glutathione Cluster CompoundThe Journal of Physical Chemistry B, 1998