Controlled Assembly of Gold Nanoparticles and Graphene Oxide Sheets on Dip Pen Nanolithography-Generated Templates

被引：58

作者：

Li, Bing ^{[1
]}

Lu, Gang ^{[1
]}

Zhou, Xiaozhu ^{[1
]}

Cao, Xiehong ^{[1
]}

Boey, Freddy ^{[1
]}

Zhang, Hua ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

LANGMUIR | 2009年 / 25卷 / 18期

关键词：

METAL NANOPARTICLES; COLLOIDAL GOLD; FABRICATION; NANOSTRUCTURES; SINGLE; MONOLAYERS; PATTERNS; ARRAYS; STATE; SURFACES;

D O I：

10.1021/la902601v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ability to organize nanomaterials, e.g., Au nanoparticles (NPs) and graphene oxide (GO) sheets, into ordered structures with high accuracy and resolution on a substrate is crucially important for fundamental studies and applications. In this letter, we developed a simple and efficient method to generate positively charged 11-amino-1- undecanethiol (AUT) templates on An substrates, which were successfully used for controlled assembly of negatively charged Au NPs or GO sheets from aqueous solution. The templates were obtained by passivation of the exposed An area with AUT after 16-mercaptohexadecanoic acid (MHA) patterns were generated by dip-pen nanolithography (DPN) on Au. The electrostatic interaction ensures that the Au NPs and GO sheets only adsorb on the designed AUT areas. Importantly, by using this method, the number of ALL NPs adsorbed on patterned areas can be controlled, and a single Au NP array was successfully achieved.

引用

页码：10455 / 10458

页数：4

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