Please use this identifier to cite or link to this item:
Title: Mesoscale spherical and planar organizations of gold nanoparticles
Authors: Zhang, Y.X.
Zeng, H.C. 
Keywords: Gold nanoparticles
mesoscale spherical assemblies
Issue Date: Jun-2008
Citation: Zhang, Y.X., Zeng, H.C. (2008-06). Mesoscale spherical and planar organizations of gold nanoparticles. Functional Materials Letters 1 (1) : 43-53. ScholarBank@NUS Repository.
Abstract: We present a systematic investigation on the roles of some starting reagents commonly used in gold nanoparticle synthesis. Our results show that Au nanoparticles adsorbed with tetraoctylammonium bromide (TOAB) or TOAB and 1-dodecanethiol (DDT) can self-assemble into spherical aggregates in various hierarchical forms, such as discrete, linear, and two-dimensional arrays, without using any additional structural linkers. Interestingly, aged Au nanoparticles in different interconnected spherical aggregates are highly ordered, showing long-range lattice uniformity. On the basis of our substrate-dependent experiments, it has been revealed that the sphere formation, self-assembly, and crystallization of Au nanoparticles in the superlattice take place upon drying. A structural evolution of mesoscale spherical assemblies to planar organizations of Au nanoparticles has also been revealed in this work for the first time. In general, the Au nanoparticles are better shelled with TOAB than with DDT surfactant. The symmetrical organic shells of TOAB and its multi-chain structure are believed to be responsible for the high capacity of particle aggregation as well as for the long-range assembling order. © 2008 World Scientific Publishing Company.
Source Title: Functional Materials Letters
ISSN: 17936047
DOI: 10.1142/S1793604708000095
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jan 13, 2019


checked on Jan 2, 2019

Page view(s)

checked on Oct 26, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.