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Proceedings Paper

In-situ formation of gold nanoparticles on self-assembly monolayer modified silicon substrate
Author(s): Lei Qi; Chunxiao Chen; Shantang Liu
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Paper Abstract

We demonstrate an effective route for the in-situ chemical synthesis of gold nanoparticles on monolayer modified silicon substrate. The formation of gold nanoparticles is based on the ability of the amino groups of the monolayer to bind AuCl4 - ions, followed by the reduction of AuCl4 - to Au0 with NaBH4. The particles size can be controlled by the concentration of HAuCl4 during the deposition-reduction process. By repeating the ion binding and reducing cycle, large amount of gold nanoparticles can be generated on the monolayer. UV visible spectroscopy and scanning electron microscope (SEM) confirm that the well-dispersed gold nanoparticles are formed on the substrate. From Atomic Force Microscope (AFM) images, we find the particles with characteristic of 3-35nm are generated on the monolayer. Therefore, this facile procedure can give a new choice to the formation of gold nanoparticles on the self-assembly monolayer modified silicon substrate.

Paper Details

Date Published: 20 October 2009
PDF: 6 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 749358 (20 October 2009); doi: 10.1117/12.840177
Show Author Affiliations
Lei Qi, Wuhan Institute of Technology (China)
Chunxiao Chen, Wuhan Institute of Technology (China)
Shantang Liu, Wuhan Institute of Technology (China)

Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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