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	All-thiol-stabilized Ag-44 and Au12Ag32 nanoparticles with single-crystal structures
	Huayan Yang ; Yang HY(杨华燕) ; Yu Wang ; Huaqi Huang ; Huang HQ(黄华奇) ; Lars Gell ( Department of Chemistry, Nanoscience Center,University of Jyva¨skyla) ; Lauri Lehtovaara ( Department of Chemistry, Nanoscience Center,University of Jyva¨skyla) ; Sami Malola ( Department of Physics, Nanoscience Center, University of Jyva¨skyla) ; Hannu Ha¨kkinen ( Department of Chemistry, Nanoscience Center,University of Jyva¨skyla) ; Nanfeng Zheng ; Zheng NF(郑南峰)
	2013-09-04
关键词	PROTECTED GOLD NANOPARTICLE SILVER NANOPARTICLES QUANTUM CLUSTER NANOCLUSTERS DENSITY BIOLOGY
英文摘要	通讯作者地址: Zheng, NF (通讯作者) Xiamen Univ, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China.; Noble metal nanoparticles stabilized by organic ligands are important for applications in assembly, site-specific bioconjugate labelling and sensing, drug delivery and medical therapy, molecular recognition and molecular electronics, and catalysis. Here we report crystal structures and theoretical analysis of three Ag-44(SR)(30) and three Au12Ag32(SR)(30) inter-metallic nanoclusters stabilized with fluorinated arylthiols (SR = SPhF, SPhF2 or SPhCF3). The nanocluster forms a Keplerate solid of concentric icosahedral and dodecahedral atom shells, protected by six Ag-2(SR)(5) units. Positive counterions in the crystal indicate a high negative charge of 4(-) per nanoparticle, and density functional theory calculations explain the stability as an 18-electron superatom shell closure in the metal core. Highly featured optical absorption spectra in the ultraviolet-visible region are analysed using time-dependent density functional perturbation theory. This work forms a basis for further understanding, engineering and controlling of stability as well as electronic and optical properties of these novel nanomaterials.; Ministry of Science and Technology of China 2011CB932403 ,2009CB930703 , National Nature Science Foundation of China 21131005 ,21021061 ,20925103 , Academy of Finland
语种	英语
出版者	NATURE PUBLISHING GROUP
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/56763]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Huayan Yang,Yang HY,Yu Wang,et al. All-thiol-stabilized Ag-44 and Au12Ag32 nanoparticles with single-crystal structures[J],2013.
APA	Huayan Yang.,杨华燕.,Yu Wang.,Huaqi Huang.,黄华奇.,...&郑南峰.(2013).All-thiol-stabilized Ag-44 and Au12Ag32 nanoparticles with single-crystal structures..
MLA	Huayan Yang,et al."All-thiol-stabilized Ag-44 and Au12Ag32 nanoparticles with single-crystal structures".(2013).

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