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

Authors :: Fabre PL
Latapie L
Launay J
Reynes O
Temple-Boyer P
Source :: Materials science & engineering. C, Materials for biological applications [Mater Sci Eng C Mater Biol Appl] 2013 Jan 01; Vol. 33 (1), pp. 64-6. Date of Electronic Publication: 2012 Aug 17.
Publication Year :: 2013
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).<br /> (Copyright © 2012 Elsevier B.V. All rights reserved.)

Subjects :: Computer Simulation
Electric Impedance
Electrodes
Gold
Ions
Spectrum Analysis, Raman
Copper chemistry
Cysteamine chemistry
Electrochemistry methods

Language :: English
ISSN :: 1873-0191
Volume :: 33
Issue :: 1
Database :: MEDLINE
Journal :: Materials science & engineering. C, Materials for biological applications
Publication Type :: Academic Journal
Accession number :: 25428043
Full Text :: https://doi.org/10.1016/j.msec.2012.08.005

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