Tuning the Magic Size of Atomically Precise Gold Nanoclusters via Isomeric Methylbenzenethiols

被引：164

作者：

Chen, Yuxiang ^{[1
]}

Zeng, Chenjie ^{[1
]}

Kauffman, Douglas R. ^{[2
]}

Jin, Rongchao ^{[1
]}

机构：

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

[2] US DOE, NETL, Pittsburgh, PA 15236 USA

来源：

NANO LETTERS | 2015年 / 15卷 / 05期

关键词：

Gold; nanocluster; atomic precision; tunable magic sizes; isomeric methylbenzenethiols; Au-S bond; AU-25; CLUSTERS; CHEMOSELECTIVE HYDROGENATION; PROTECTED AU-130; KDA GOLD; CORE; NANOPARTICLES; COMPLEXES; SCALE; CYCLOHEXANETHIOLATE; AU-40(SR)(24);

D O I：

10.1021/acs.nanolett.5b01122

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Toward controlling the magic sizes of atomically precise gold nanoclusters, herein we have devised a new strategy by exploring the para-, meta-, ortho-methylbenzenethiol (MBT) for successful preparation of pure Au-130(p-MET)(50), Au-104(m-MBT)(41) and Au-40(o-MBT)(24) nanoclusters. The decreasing site sequence is in line with the increasing hindrance of the methyl group to the interfacial Au-S bond. That the subtle change of ligand structure can result in drastically different Magic sizes under otherwise similar reaction conditions is indeed for the first time observed in the synthesis of thiolate-protected gold nanoclusters. These nanoclusters are highly stable as they are synthesized under harsh size-focusing conditions at 80-90 degrees C in the presence of excess thiol and air (i.e., without exclusion of oxygen).

引用

页码：3603 / 3609

页数：7

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