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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
 
Creator Sheela, B.
Vergheese, T.M.
Kavitha, A.L.
Manoj, V.
Yegnaraman, V.
 
Subject Electrodics and Electrocatalysis
Nanotechnology
 
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.
 
Publisher Springer-Verlag
 
Date 2008
 
Type Article
PeerReviewed
 
Format application/pdf
 
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.
 
Relation http://cecri.csircentral.net/1/