A systems approach towards the stoichiometry-controlled hetero-assembly of nanoparticles

Yong Wang, Gang Chen, Miaoxin Yang, Georg Silber, Shuangxi Xing, Li Huey Tan, Feng Wang, Yuhua Feng, Xiaogang Liu, Shuzhou Li and Hongyu Chen ()
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Yong Wang: School of Physical and Mathematical Sciences, Nanyang Technological University
Gang Chen: School of Physical and Mathematical Sciences, Nanyang Technological University
Miaoxin Yang: School of Physical and Mathematical Sciences, Nanyang Technological University
Georg Silber: School of Physical and Mathematical Sciences, Nanyang Technological University
Shuangxi Xing: School of Physical and Mathematical Sciences, Nanyang Technological University
Li Huey Tan: School of Physical and Mathematical Sciences, Nanyang Technological University
Feng Wang: National University of Singapore
Yuhua Feng: School of Physical and Mathematical Sciences, Nanyang Technological University
Xiaogang Liu: National University of Singapore
Shuzhou Li: School of Materials Science and Engineering, Nanyang Technological University
Hongyu Chen: School of Physical and Mathematical Sciences, Nanyang Technological University

Nature Communications, 2010, vol. 1, issue 1, 1-7

Abstract: Abstract A central theme in nanotechnology is to advance the fundamental understanding of nanoscale component assembly, thereby allowing rational structural design that may lead to materials with novel properties and functions. Nanoparticles (NPs) are often regarded as 'artificial atoms', but their 'reactions' are not readily controllable. Here, we demonstrate a complete nanoreaction system whereby colloidal NPs are rationally assembled and purified. Two types of functionalized gold NPs (A and B) are bonded to give specific products AB, AB2, AB3 and AB4. The stoichiometry control is realized by fine-tuning the charge repulsion among the B-NPs. The products are protected by a polymer, which allows their isolation in high purity. The integration of hetero-assembly, stoichiometry control, protection scheme and separation method may provide a scalable way to fabricate sophisticated nanostructures.

Date: 2010
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DOI: 10.1038/ncomms1089

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