Electrochemical preparation of copper–dendrimer nanocomposites: picomolar detection of Cu2+ ions
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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Title |
Electrochemical preparation of copper–dendrimer
nanocomposites: picomolar detection of Cu2+ ions
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Creator |
Sheela, B.
Vergheese, T.M. Kavitha, A.L. Manoj, V. Yegnaraman, V. |
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Subject |
Electrodics and Electrocatalysis
Nanotechnology |
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Description |
The present work describes, for the first time, in
situ electrochemical preparation of dendrimer-encapsulated
Cu nanoparticles using a self-assembled monolayer of fourthgeneration
amine-terminated polyamidoamine (PAMAM)
dendrimer as the template. Atomic force microscopy (AFM)
and X-ray photoelectron spectroscopy (XPS) studies of the
modified surface confirmed the presence of Cu nanoparticles
entrapped in dendrimer film. Au electrode modified with a
monolayer of the dendrimer enables preconcentration and
subsequent voltammetric detection of Cu2+ at picomolar
concentrations. Further, Cu nanoparticles in the dendrimer
monolayer could be electrochemically derivatised to Cu
hexacyanoferrate, which exhibits specific crystal planes,
unlike the random distribution of crystal planes in bulkformed
Cu hexacyanoferrate, which is another catalytically
active material for sensor applications.
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Publisher |
Springer-Verlag
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Date |
2008
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://cecri.csircentral.net/1/1/001-2008.pdf
Sheela, B. and Vergheese, T.M. and Kavitha, A.L. and Manoj, V. and Yegnaraman, V. (2008) Electrochemical preparation of copper–dendrimer nanocomposites: picomolar detection of Cu2+ ions. Anal Bioanal Chem, 390. pp. 939-946. |
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Relation |
http://cecri.csircentral.net/1/
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