Charged Gold Nanoparticles in Non-Polar Solvents: 10-min Synthesis and 2D Self-Assembly

被引：275

作者：

Martin, Matthew N. ^{[1
]}

Basham, James I. ^{[1
]}

Chando, Paul ^{[1
]}

Eah, Sang-Kee ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA

来源：

LANGMUIR | 2010年 / 26卷 / 10期

基金：

美国国家科学基金会;

关键词：

PARTICLE-SIZE; MIXED-VALENT; SOLID-STATE; MONOLAYERS; SILVER; PHASE; NANOCRYSTALS; SUPERLATTICES; CLUSTERS; ARRAYS;

D O I：

10.1021/la100591h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a fast and highly reproducible chemical synthesis method for colloidal gold nanoparticles which are negatively charged in nonpolar solvents and coated with hydrophobic organic molecules. If a hexane droplet containing charged gold nanoparticles is mixed with a larger toluene droplet, nanoparticles immediately float to the air toluene interface and form a close-packed monolayer film. After evaporation of the solvent molecules, the monolayer film of nanoparticles can be deposited to any substrate without any limit in size. The synthesis does not require a postsynthesis cleaning step, since the two immiscible liquid phases separate the reaction byproducts from gold nanoparticles and a minimal amount of coating molecules is used.

引用

页码：7410 / 7417

页数：8

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