Single Crystal Sub-Nanometer Sized Cu6(SR)6 Clusters : Structure, Photophysical Properties, and Electrochemical Sensing
Gao, X., He, S., Zhang, C., Du, C., Chen, X., Xing, W., . . . Chen, W. (2016). Single Crystal Sub-Nanometer Sized Cu6(SR)6 Clusters : Structure, Photophysical Properties, and Electrochemical Sensing. Advanced Science, 3 (12), 1600126. doi:10.1002/advs.201600126
Published inAdvanced Science
Chen, Xi |
© 2016 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License.
Organic ligand-protected metal nanoclusters have attracted extensively attention owing to their atomically precise composition, determined atom-packing structure and the fascinating properties and promising applications. To date, most research has been focused on thiol-stabilized gold and silver nanoclusters and their single crystal structures. Here the single crystal copper nanocluster species (Cu6(SC7H4NO)6) determined by X-ray crystallography and mass spectrometry is presented. The hexanuclear copper core is a distorted octahedron surrounded by six mercaptobenzoxazole ligands as protecting units through a simple bridging bonding motif. Density functional theory (DFT) calculations provide insight into the electronic structure and show the cluster can be viewed as an open-shell nanocluster. The UV–vis spectra are analyzed using time-dependent DFT and illustrates high-intensity transitions involving primarily ligand states. Furthermore, the as-synthesized copper clusters can serve as promising nonenzymatic sensing materials for high sensitive and selective detection of H2O2. ...