Large-scale synthesis of thiolated Au25 clusters via ligand exchange reactions of phosphine-stabilized Au11 clusters

被引：374

作者：

Shichibu, Y

Negishi, Y

Tsukuda, T

Teranishi, T

机构：

[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, Ishikawa 9231292, Japan

[2] Inst Mol Sci, Ctr Mol Scale Nanosci, Okazaki, Aichi 4448585, Japan

[3] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 39期

关键词：

D O I：

10.1021/ja053915s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phosphine-stabilized Au11 clusters in chloroform were reacted with glutathione (GSH) in water under a nitrogen atmosphere. The resulting Au:SG clusters exhibit an optical absorption spectrum similar to that of Au25(SG)18, which was isolated as one of the major products from chemically prepared Au:SG clusters (Negishi, Y. et al. J. Am. Chem. Soc. 2005, 127, 5261). Rigorous characterization by optical spectroscopy, electrospray ionization mass spectrometry, and polyacrylamide gel electrophoresis confirms that the Au25(SG)18 clusters were selectively obtained on the sub-100 mg scale by ligand exchange reaction under aerobic conditions. The ligand exchange strategy offers a practical and convenient method of synthesizing thiolated Au25 clusters on a large scale. Copyright © 2005 American Chemical Society.

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页码：13464 / 13465

页数：2

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