Au144-xCux(SC6H13)60 nanomolecules: effect of Cu incorporation on composition and plasmon-like peak emergence in optical spectra

被引：56

作者：

Dharmaratne, Asantha C. ^{[1
]}

Dass, Amala ^{[1
]}

机构：

[1] Univ Mississippi, Dept Chem & Biochem, University, MS 38677 USA

来源：

CHEMICAL COMMUNICATIONS | 2014年 / 50卷 / 14期

基金：

美国国家科学基金会;

关键词：

NANOALLOY CLUSTERS; MASS-SPECTROMETRY; ALLOY CLUSTERS; NANOCLUSTERS; STABILITY;

D O I：

10.1039/c3cc47060a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Au144-xCux(SR)(60) alloy nanomolecules were synthesized and characterized by using ESI-MS to atomic precision. A maximum of 23 copper atoms replace the gold atoms. When the number of copper atoms is higher than eight, a surface plasmon-like peak appears at similar to 520 nm. Based on the fundamental elemental properties of Au and Cu, we predict a mixed atomic ordering and incorporation of Cu atoms into the Au-12 and Au-42 shells of the proposed icosahedral structure model of the 144-atom nanomolecule.

引用

页码：1722 / 1724

页数：3

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