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Article Dans Une Revue Materials Science and Engineering: C Année : 2013

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

Laure Latapie
Jérôme Launay
Pierre Temple-Boyer

Résumé

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.
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Dates et versions

hal-00881071 , version 1 (07-11-2013)

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Paul-Louis Fabre, Laure Latapie, Jérôme Launay, Olivier Reynes, Pierre Temple-Boyer. Unexpected effect of copper ions on electrochemical impedance behaviour of self-assembled alkylaminethiol monolayer. Materials Science and Engineering: C, 2013, vol. 33 (1), pp. 64-66. ⟨10.1016/j.msec.2012.08.005⟩. ⟨hal-00881071⟩
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