Au103(SR)45, Au104(SR)45, Au104(SR)46 and Au105(SR)46 nanoclusters

被引：30

作者：

Dass, Amala

Nimmala, Praneeth Reddy

Jupally, Vijay Reddy

Kothalawala, Nuwan

机构：

[1] Department of Chemistry and Biochemistry, University of Mississippi, 352 Coulter Hall, Mississippi

来源：

NANOSCALE | 2013年 / 5卷 / 24期

基金：

美国国家科学基金会;

关键词：

PROTECTED GOLD CLUSTERS; MASS-SPECTROMETRY; STRUCTURAL-PROPERTIES; CRYSTAL-STRUCTURE; KDA GOLD; NANOMOLECULES; NANOPARTICLES; AU-102(SR)(44); 1ST-PRINCIPLES; RESOLUTION;

D O I：

10.1039/c3nr03872f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High resolution ESI mass spectrometry of the "22 kDa" nanocluster reveals the presence of a mixture containing Au-103(SR)(45), Au-104(SR)(45), Au-104(SR)(46), and Au-105(SR)(46) nanoclusters, where R = -CH2CH2Ph. MALDI TOF MS data confirm the purity of the sample and a UV-vis spectrum shows minor features. Au-102(SC6H5COOH)(44), whose XRD crystal structure was recently reported, is not observed. This is due to ligand effects, because the 102 : 44 composition is produced using aromatic ligands. However, the 103-, 104- and 105-atom nanoclusters, protected by -SCH2CH2Ph and -SC6H13 ligands, are at or near 58 electron shell closing.

引用

收藏

页码：12082 / 12085

页数：4

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