Reconstructing the Surface of Gold Nanoclusters by Cadmium Doping.
Atomically precise metal nanoclusters with tailored surface structures are important for both fundamental studies and practical applications. The development of new methods for tailoring the surface structure in a controllable manner has long been sought. In this work, we report surface reconstructi...
| Publicado en: | Journal of the American Chemical Society Vol. 139; no. 49; pp. 17779 - 17783 |
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| Autores principales: | , , , , , , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
12/13/2017
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| Materias: | |
| 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=126761902&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 126761902 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: 12/13/2017 vid: 139 iid: 49 pid: 997 pub: American Chemical Society artinfo: ui: 126761902 10.1021/jacs.7b11491 ppf: 17779 ppct: 4 formats: tig: atl: Reconstructing the Surface of Gold Nanoclusters by Cadmium Doping. aug: au: Qi Li Lambright, Kelly J. Taylor, Michael G. Kirschbaum, Kristin Tian-Yi Luo Jianbo Zhao Mpourmpakis, Giannis Mokashi-Punekar, Soumitra Rosi, Nathaniel L. Rongchao Jin affil: Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States College of Natural Sciences and Mathematics, University of Toledo, Toledo, Ohio 43606, United States Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States su: Gold clusters Surface analysis Cadmium Doping agents (Chemistry) Metal nanoparticles Density functional theory sug: subj: Gold clusters Surface analysis Cadmium Doping agents (Chemistry) Metal nanoparticles Density functional theory ab: Atomically precise metal nanoclusters with tailored surface structures are important for both fundamental studies and practical applications. The development of new methods for tailoring the surface structure in a controllable manner has long been sought. In this work, we report surface reconstruction induced by cadmium doping into the [Au(SR)]- (R = cyclohexyl) nanocluster, in which two neighboring surface Au atomic sites "coalesce" into one Cd atomic site and, accordingly, a new bimetal nanocluster, [AuCd(SR)]-, is produced. Interestingly, a Cd(S-Au-S) "paw-like" surface motif is observed for the first time in nanocluster structures. In such a motif, the Cd atom acts as a junction which connects three monomeric -S-Au-S- motifs. Density functional theory calculations are performed to understand the two unique Cd locations. Furthermore, we demonstrate different doping modes when the [Au(SR)]- nanocluster is doped with different metals (Cu, Ag), including (i) simple substitution and (ii) total structure transformation, as opposed to surface reconstruction for Cd doping. This work greatly expands doping chemistry for tailoring the structures of nanoclusters and is expected to open new avenues for designing nanoclusters with novel surface structures using different dopants. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2017 holdings: @attributes: islocal: N |
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