A1 Refereed original research article in a scientific journal
Preparation and Characterization of a Redox Multilayer Film Containing Au Nanoparticles
Authors: Terzi F, Zanardi C, Zanfrognini B, Pigani L, Seeber R, Lukkari J, Aaritalo T, Kankare J
Publisher: AMER CHEMICAL SOC
Publication year: 2009
Journal:Journal of Physical Chemistry C
Journal name in sourceJOURNAL OF PHYSICAL CHEMISTRY C
Journal acronym: J PHYS CHEM C
Volume: 113
Issue: 12
First page : 4868
Last page: 4874
Number of pages: 7
ISSN: 1932-7447
DOI: https://doi.org/10.1021/jp809402j
Abstract
Gold nanoparticles encapsulated by negatively charged molecules have been stably anchored at a Au substrate through layer-by-layer deposition technique, employing a redox polyviologen derivative as the cationic counterpart. UV-vis spectroscopy, quartz crystal microbalance, transmission electron microscopy, scanning electron microscopy, atomic force microscopy, and voltammetric measurements have been performed in order to characterize the systems and to give a rationale to the effect of the deposition conditions on the properties of the resulting multilayers. The behavior of two benchmark electroactive species ([Fe(CN)(6)](4-) and (Ru(NH3)(6)](3+)) has been studied on nanoparticle-terminated multilayers. The nanoparticles provide charge percolation through the multilayer and charge transfer with redox species in solution. The results imply that the electrochemical behavior of nanoparticle-containing films is partly dependent on the charge compensation mode within polyelectrolyte multilayers.
Gold nanoparticles encapsulated by negatively charged molecules have been stably anchored at a Au substrate through layer-by-layer deposition technique, employing a redox polyviologen derivative as the cationic counterpart. UV-vis spectroscopy, quartz crystal microbalance, transmission electron microscopy, scanning electron microscopy, atomic force microscopy, and voltammetric measurements have been performed in order to characterize the systems and to give a rationale to the effect of the deposition conditions on the properties of the resulting multilayers. The behavior of two benchmark electroactive species ([Fe(CN)(6)](4-) and (Ru(NH3)(6)](3+)) has been studied on nanoparticle-terminated multilayers. The nanoparticles provide charge percolation through the multilayer and charge transfer with redox species in solution. The results imply that the electrochemical behavior of nanoparticle-containing films is partly dependent on the charge compensation mode within polyelectrolyte multilayers.
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