Structure of Au(SR) and Its Implication for the Origin of the Nucleus in Thiolated Gold Nanoclusters.
Au(SR) is the smallest stable thiolated gold nanocluster experimentally identified so far, and its elusive structure may hold the key to the origin of the nucleus in the formation of thiolated gold nanoclusters. By an extensive exploration of possible isomers by density functional theory, we arrive...
| Publicado en: | Journal of the American Chemical Society Vol. 135; no. 24; pp. 8786 - 8790 |
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| Autores principales: | , , |
| Formato: | Artículo |
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American Chemical Society
6/19/2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=89498643&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 89498643 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 6/19/2013 vid: 135 iid: 24 pid: 997 pub: American Chemical Society artinfo: ui: 89498643 10.1021/ja402680c ppf: 8786 ppct: 4 formats: tig: atl: Structure of Au(SR) and Its Implication for the Origin of the Nucleus in Thiolated Gold Nanoclusters. aug: au: De-en Jiang Overbury, Steven H. Sheng Dai affil: Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37966, United States su: Thiolates Gold nanoparticles Isomers Nucleation Polymers Density functional theory Light absorption sug: subj: Thiolates Gold nanoparticles Isomers Nucleation Polymers Density functional theory Light absorption ab: Au(SR) is the smallest stable thiolated gold nanocluster experimentally identified so far, and its elusive structure may hold the key to the origin of the nucleus in the formation of thiolated gold nanoclusters. By an extensive exploration of possible isomers by density functional theory, we arrive at a novel structure for Au(SR) with high stability and whose optical absorption characteristics match those of the experiment. Different from the previous structures and the prevailing working hypothesis about the construction of thiolated gold nanoclusters, the Au(SR) model features a cyclic [Au(I)-SR] pentamer interlocked with one staple trimer motif protecting the tetrahedral Au nucleus, together with another trimer motif. This structure suggests that Au(SR) is a transitional composition from an [Au(I)-SR]x polymer such as Au(SR) to larger Au(SR) (n > m) clusters that have only the staple motifs and that the nucleation process starts from the Au core. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2013 holdings: @attributes: islocal: N |
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