Self-assembly of length-tunable gold nanoparticle chains in organic solvents |
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| Authors: | JH Liao KJ Chen LN Xu CW Ge J Wang L Huang N Gu |
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| Institution: | (1) National Laboratory of Molecular and Biomolecular Electronics, Southeast University, Nanjing, 210096, P.R. China, CN;(2) Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210008, P.R. China, CN |
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| Abstract: | The one-dimensional coagulation of gold colloidal particles dispersed in organic solvent was investigated with transmission
electron microscopy. The results indicate that the length of the nanoparticle chains can be modulated by changing the concentration
of the solutions. It was also demonstrated that the wetting of the substrate surface hardly influenced the morphology of the
nanoparticle chains, which revealed that the particle chains had been formed in the solution before deposition on the substrates.
A general theoretical interpretation is provided to explain the linear coagulation of gold colloidal particles, on the basis
of the asymmetrical distribution of the charges absorbed on the surface of the gold colloidal particles, as well as the action
of the solvent molecules.
Received: 8 April 2002 / Accepted: 1 July 2002 / Published online: 4 December 2002
RID="*"
ID="*"Corresponding author. Fax: +86-025/361-9983, E-mail: jhliao@seu.edu.cn |
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| Keywords: | PACS: 81 07 -b 82 70 Dd 85 65 +h 81 16 Dn 85 35 Gv |
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