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Author Sheela, B. ♦ Vergheese, T. M. ♦ Kavitha, A. L. ♦ Manoj, V. ♦ Yegnaraman, V.
Source CSIR-Central Electrochemical Research Institute
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2008
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Electrodics and Electrocatalysis ♦ Nanotechnology
Abstract 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.
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-01-01
Journal PeerReviewed