Structural Evolution of Atomically Precise Thiolated Bimetallic [AuCu(SR)] (n = 0, 2, 4, 6) Nanoclusters.
A series of all-thiol stabilized bimetallic Au-Cu nanoclusters, [AuCu(SR)] (n = 0, 2, 4, 6 and SR = SPhCF), are successfully synthesized and characterized by X-ray single-crystal analysis and density functional theory (DFT) calculations. Each cluster consists of a Keplerate two-shell Au@Cu core prot...
| Publicado en: | Journal of the American Chemical Society Vol. 136; no. 20; pp. 7197 - 7201 |
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| Autores principales: | , , , , , , |
| Formato: | Artículo |
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American Chemical Society
5/21/2014
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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=96355599&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 96355599 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: 5/21/2014 vid: 136 iid: 20 pid: 997 pub: American Chemical Society artinfo: ui: 96355599 10.1021/ja501811j ppf: 7197 ppct: 4 formats: tig: atl: Structural Evolution of Atomically Precise Thiolated Bimetallic [AuCu(SR)] (n = 0, 2, 4, 6) Nanoclusters. aug: au: Huayan Yang Yu Wang Juanzhu Yan Xi Chen Xin Zhang Häkkinen, Hannu Nanfeng Zheng affil: State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China Departments of Physics and Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland su: Metal clusters synthesis Gold-copper alloys Density functional theory Structural analysis (Science) Optical properties measurement Light absorption Thiols sug: subj: Metal clusters synthesis Gold-copper alloys Density functional theory Structural analysis (Science) Optical properties measurement Light absorption Thiols ab: A series of all-thiol stabilized bimetallic Au-Cu nanoclusters, [AuCu(SR)] (n = 0, 2, 4, 6 and SR = SPhCF), are successfully synthesized and characterized by X-ray single-crystal analysis and density functional theory (DFT) calculations. Each cluster consists of a Keplerate two-shell Au@Cu core protected by (6 - n) units of Cu(SR) and n units of CuAu(SR) (n = 0, 2, 4, 6) motifs on its surface. The size and structural evolution of the clusters is atomically controlled by the Au precursors and countercations used in the syntheses. The clusters exhibit similar optical absorption properties that are not dependent on the number of surface CuAu(SR) units. Although DFT suggests an electronic structure with an 18-electron superatom shell closure, the clusters display different thermal stabilities. [AuCu(SR)] clusters with n = 0 and 2 are more stable than those with n = 4 and 6. Moreover, an oxidation product of the clusters, [AuCu(SR)], is structurally identified to gain insight into how the clusters are oxidized. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2014 holdings: @attributes: islocal: N |
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