Isolation of Ubiquitous Au40(SR)24 Clusters from the 8 kDa Gold Clusters

被引：123

作者：

Qian, Huifeng ^{[1
]}

Zhu, Yan ^{[1
]}

Jin, Rongchao ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 13期

关键词：

THIOLATE-PROTECTED AU-38; MASS-SPECTROMETRY; OPTICAL-ACTIVITY; AU-55; CLUSTERS; NANOPARTICLES; NANOCLUSTERS; LIGAND; COMPLEXES; CORE; LUMINESCENCE;

D O I：

10.1021/ja1006383

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report chromatographic isolation of a new thiolate-protected gold cluster species from the similar to 8 kDa Au-n(SR)(m) clusters. This new cluster is separated by size-exclusion chromatography from Au-38(SC2H4Ph)(24) (a previously reported main component in the -8 kDa gold-thiolate species). Based on detailed MALDI and ESI mass spectrometry analyses, the new cluster possesses a core mass of similar to 8.6 kDa and its formula is determined to be Au-40(SC2H4Ph)(24). The Au-40(SR)(24) species is also found to exist in other thiolate systems, including -SR=SC6H13 and SC5H11, indicating that Au-40(SR)(24) is a ubiquitous cluster as is AU(38)(SR)(24).

引用

页码：4583 / +

页数：4

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