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

被引：0
作者：
Fabre, Paul-Louis [1 ,2 ]
Latapie, Laure [1 ,2 ]
Launay, Jerome [3 ]
Reynes, Olivier [1 ,2 ]
Temple-Boyer, Pierre [3 ]
机构：
[1] Univ Toulouse 3, Lab Genie Chim, F-31062 Toulouse 09, France
[2] CNRS, Lab Genie Chim, UMR 5503, F-31062 Toulouse 09, France
[3] CNRS, Lab Anal & Architectures Syst, UPR 8001, F-31077 Toulouse 4, France
来源：
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2013年 / 33卷 / 01期
关键词：
Equivalent electrical circuit; Self-assembled monolayer; Electrochemical impedance spectroscopy; SPECTROSCOPY; CYSTEAMINE;
D O I：
10.1016/j.msec.2012.08.005
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
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. (c) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：64 / 66
页数：3
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