TY - JOUR
T1 - Probing Photoelectrochemical Processes in Au-CdS Nanoparticle Arrays by Surface Plasmon Resonance
T2 - Application for the Detection of Acetylcholine Esterase Inhibitors
AU - Zayats, Maya
AU - Kharitonov, Andrei B.
AU - Pogorelova, Svetlana P.
AU - Lioubashevski, Oleg
AU - Katz, Eugenii
AU - Willner, Itamar
PY - 2003/12/24
Y1 - 2003/12/24
N2 - The photoelectrochemical charging of Au-nanoparticles (NP) in a Au-nanoparticle/CdS-nanoparticle array assembled on a Au-coated glass surface is followed by means of surface plasmon resonance (SPR) spectroscopy upon continuous irradiation of the sample. The charging of the Au-NPs results in the enhanced coupling between the localized surface plasmon of the Au-NP and the surface plasmon of the bulk surface, leading to a shift in the plasmon angle. The charging effect of the Au-NPs is supported by concomitant electrochemical experiments in the dark. Analysis of the results indicates that ca. 4.2 electrons are associated with each Au-nanoparticle under steady-state irradiation. The photoelectrochemical charging effect of the Au-NPs in the Au-CdS NP array is employed to develop a SPR sensor for acetylcholine esterase inhibitors.
AB - The photoelectrochemical charging of Au-nanoparticles (NP) in a Au-nanoparticle/CdS-nanoparticle array assembled on a Au-coated glass surface is followed by means of surface plasmon resonance (SPR) spectroscopy upon continuous irradiation of the sample. The charging of the Au-NPs results in the enhanced coupling between the localized surface plasmon of the Au-NP and the surface plasmon of the bulk surface, leading to a shift in the plasmon angle. The charging effect of the Au-NPs is supported by concomitant electrochemical experiments in the dark. Analysis of the results indicates that ca. 4.2 electrons are associated with each Au-nanoparticle under steady-state irradiation. The photoelectrochemical charging effect of the Au-NPs in the Au-CdS NP array is employed to develop a SPR sensor for acetylcholine esterase inhibitors.
UR - http://www.scopus.com/inward/record.url?scp=0346994909&partnerID=8YFLogxK
U2 - 10.1021/ja0379215
DO - 10.1021/ja0379215
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C2 - 14677992
AN - SCOPUS:0346994909
SN - 0002-7863
VL - 125
SP - 16006
EP - 16014
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 51
ER -