Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/8265
Title: Electroactive Nanostructured Membranes (ENM): Synthesis and Electrochemical Properties of Redox Mediator-Modified Gold Nanoparticles Using a Dendrimer Layer-by-Layer Approach
Authors: Crespilho, Frank N. 
Ghica, M. Emilia 
Zucolotto, Valtencir 
Nart, Francisco C. 
Oliveira Jr., Osvaldo N. 
Brett, Christopher M. A. 
Issue Date: 2007
Citation: Electroanalysis. 19:7-8 (2007) 805-812
Abstract: The layer-by-layer (LbL) self-assembly process has become an important tool in the fabrication of nanostructured devices for electrochemical applications, especially in those cases where control at the molecular level is required. In this paper we present a system based on electroactive nanostructured membranes (ENM) with ITO-PVS/PAMAM-Au LbL electrodes, in which a redox mediator (Me) is electrodeposited around the Au nanoparticles to form an ITO-PVS/PAMAM-Au@Me system. The redox mediators used were Co, Fe, Ni and Cu hexacyanoferrates. The 3-bilayer ITO-PVS/PAMAM-Au@Me system was characterized electrochemically by cyclic voltammetry and electrochemical impedance spectroscopy. All hexacyanoferrate modified electrodes showed electrocatalytic activity towards hydrogen peroxide, thus demonstrating that this new approach can be used in biosensors and nanodevices, where a redox mediator is required.
URI: http://hdl.handle.net/10316/8265
DOI: 10.1002/elan.200603775
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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