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Unexpected effect of copper ions on electrochemical impedance behaviour of self-assembled alkylaminethiol monolayer

Fabre, Paul-Louis and Latapie, Laure and Launay, Jérôme and Reynes, Olivier and Temple-Boyer, Pierre Unexpected effect of copper ions on electrochemical impedance behaviour of self-assembled alkylaminethiol monolayer. (2013) Materials Science and Engineering: C, vol. 33 (n° 1). pp. 64-66. ISSN 0928-4931

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Official URL: http://dx.doi.org/10.1016/j.msec.2012.08.005

Abstract

Effect of copper ions on the electrochemical behaviour of an alkylaminethiol monolayer has been studied by electrochemical impedance spectrosocpy. RAMAN experiment shows the effective adsorption of receptor onto the gold surfaces. The study of Nyquist plot shows that the gold/monolayer/electrolyte interface can be described by a serial combination of two R, CPE electrical circuits. In the presence of increasing amounts of copper, the Nyquist plots at low frequencies were modified showing an increase of the resistance of the second R, CPE electrical circuit. Moreover, this increase of resistance varies linearly with the amounts of copper ions added in solution from 10−8 mol·L−1 to 10−5 mol·L−1.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at : http://dx.doi.org/10.1016/j.msec.2012.08.005
HAL Id:hal-00881071
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
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Deposited By: Vincent GERBAUD
Deposited On:24 Oct 2013 15:58

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