Mass Spectrometric Identification of Au68(SR)34 Molecular Gold Nanoclusters with 34-Electron Shell Closing

被引：166

作者：

Dass, Amala ^{[1
]}

机构：

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

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 33期

关键词：

OPTICAL-ABSORPTION SPECTRA; PROTECTED AU-25; METAL NANOPARTICLES; CLUSTER COMPOUNDS; CRYSTAL-STRUCTURE; KDA GOLD; AU; RESOLUTION; STABILITY; NANOCRYSTALS;

D O I：

10.1021/ja904713f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The molecular formula Au-68(SCH2CH2Ph)(34) has been assigned to the 14 kDa nanocluster using MALDI-TOF mass spectrometry. The 34-electron shell closing in a macroscopically obtained thiolated gold nanocluster is demonstrated. The Au-68 nanocluster is predicted to have a 49 atom Marks decahedral core with 19 inner core atoms and 30 outer atoms chelating with the staple motifs. The nanoclusters' predicted formulation is [Au](19.30)[Au(SR)(2)](11) [Au-2(SR)(3)](4).

引用

页码：11666 / +

页数：3

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