TITLE

Electrochemical route for the fabrication of alkanethiolate-capped gold nanoparticles

AUTHOR(S)
Zhang, P.; Kim, P. S.; Sham, T. K.
PUB. DATE
March 2003
SOURCE
Applied Physics Letters;3/3/2003, Vol. 82 Issue 9, p1470
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Nearly monodispersed gold nanoparticles (NPs) of a few nanometers were fabricated and immobilized simultaneously on silicon surface by the galvanostatic reduction of HAuCl[sub 4] in the presence of dodecanethiol. X-ray absorption spectra at both sulfur K edge and gold L[sub 3] edge confirm the existence of the alkanethiolate-protected Au NPs and reveal their structural and bonding characteristics. Alkanethiolate-capped Au NPs were also successfully fabricated, with the same technique, on porous silicon, a functional substrate with high surface area. The hybrid thiol-capping/ electrodeposition method reported here offers an attractive approach to the fabrication of highly stable gold NPs on various functional substrates with a simple, fast, and easily controlled experimental procedure.
ACCESSION #
9176091

 

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