Structural evolution of atomically precise thiolated bimetallic [Au 12+ nCu32(SR)30+ n]4- (n = 0, 2, 4, 6) Nanoclusters

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	Structural evolution of atomically precise thiolated bimetallic [Au 12+ nCu32(SR)30+ n]4- (n = 0, 2, 4, 6) Nanoclusters
	Yang, Huayan ; Wang, Yu ; Yan, Juanzhu ; Chen, Xi ; Zhang, Xin ; H?kkinen, Hannu ; Zheng, Nanfeng ; Chen X(陈曦) ; Zheng NF(郑南峰)
刊名	http://dx.doi.org/10.1021/ja501811j
	2014
关键词	Electronic structure
英文摘要	A series of all-thiol stabilized bimetallic Au-Cu nanoclusters, [Au 12+nCu32(SR)30+n]4- (n = 0, 2, 4, 6 and SR = SPhCF3), 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 Au12@Cu20 core protected by (6 - n) units of Cu2(SR)5 and n units of Cu2Au(SR)6 (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 Cu2Au(SR)6 units. Although DFT suggests an electronic structure with an 18-electron superatom shell closure, the clusters display different thermal stabilities. [Au12+nCu32(SR) 30+n]4- clusters with n = 0 and 2 are more stable than those with n = 4 and 6. Moreover, an oxidation product of the clusters, [Au 13Cu12(SR)20]4-, is structurally identified to gain insight into how the clusters are oxidized. ? 2014 American Chemical Society.
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89695]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Yang, Huayan,Wang, Yu,Yan, Juanzhu,et al. Structural evolution of atomically precise thiolated bimetallic [Au 12+ nCu32(SR)30+ n]4- (n = 0, 2, 4, 6) Nanoclusters[J]. http://dx.doi.org/10.1021/ja501811j,2014.
APA	Yang, Huayan.,Wang, Yu.,Yan, Juanzhu.,Chen, Xi.,Zhang, Xin.,...&郑南峰.(2014).Structural evolution of atomically precise thiolated bimetallic [Au 12+ nCu32(SR)30+ n]4- (n = 0, 2, 4, 6) Nanoclusters.http://dx.doi.org/10.1021/ja501811j.
MLA	Yang, Huayan,et al."Structural evolution of atomically precise thiolated bimetallic [Au 12+ nCu32(SR)30+ n]4- (n = 0, 2, 4, 6) Nanoclusters".http://dx.doi.org/10.1021/ja501811j (2014).