Electrochemical
impedance spectroscopy was employed to investigate the permeation of
electrolyte ions in thioctic acid self-assembled monolayer when its structure
was changed by the interaction of copper ions.The ion permeation was
evaluated by using relatively low excitation frequencies, 0.2 Hz to 1000 Hz,
and quantified by an extra resistive component in the equivalent circuit (RSAM).The extent of ion permeation affected by the electrode potentials
and the electrolyte concentration were investigated. The experimental results
verified that RSAM decreased
References
[1]
Calvente, J.J., Lopez-Perez, G., Ramirez, P., Fernandez, H., Zon, M.A., Mulder, W.H. and Andreu, R. (2005) Experimental Study of the Interplay between Long-Range Electron Transfer and Redox Probe Permeation at Self-Assembled Monolayers: Evidence for Potential-Induced Ion Gating. Journal of the American Chemical Society, 127, 6476-6486. https://doi.org/10.1021/ja050265j
[2]
Sek, S., Misicka, A. and Bilewicz, R. (2000) Effect of Interchain Hydrogen Bonding on Electron Transfer through Alkanethiol Monolayers Containing Amide Bonds. The Journal of Physical Chemistry B, 104, 5399-5402. https://doi.org/10.1021/jp000376z
[3]
Walter, D.G., Campbell, D.J. and Mirkin, C.A. (1999) Photon-Gated Electron Transfer in Two-Component Self-Assembled Monolayers. The Journal of Physical Chemistry B, 103, 402-405. https://doi.org/10.1021/jp983460b
[4]
Burshtain, D. and Mandler, D. (2004) Determination of the Heterogeneous Association Constants of Metal Ions to ω-Mercaptoalkanoic Acids by Using Double-Layer Capacity Measurements. Chemphyschem, 5, 1532-1539. https://doi.org/10.1002/cphc.200400232
[5]
Schweiss, R., Werner, C. and Knoll, W. (2003) Impedance Spectroscopy Studies of Interfacial Acid-Base Reactions of Self-Assembled Monolayers. Journal of Electroanalytical Chemistry, 540, 145-151. https://doi.org/10.1016/S0022-0728(02)01303-7
[6]
Petoral, R.M., Bjorefors, F. and Uvdal, K. (2006) Metal Ion Interaction with Phosphorylated Tyrosine Analogue Monolayers on Gold. The Journal of Physical Chemistry B, 110, 23410-23416. https://doi.org/10.1021/jp064075m
[7]
Flink, S., van Veggel, F. and Reinhoudt, D.N. (2000) Sensor Functionalities in Self-Assembled Monolayers. Advanced Materials, 12, 1315-1328. https://doi.org/10.1002/1521-4095(200009)12:18<1315::AID-ADMA1315>3.0.CO;2-K
[8]
Turyan, I. and Mandler, D. (1997) Selective Determination of Cr(VI) by a Self-Assembled Monolayer-Based Electrode. Analytical Chemistry, 69, 894-897. https://doi.org/10.1021/ac9607525
[9]
Boubour, E. and Lennox, R.B. (2000) Stability of ω-Functionalized Self-Assembled Monolayers as a Function of Applied Potential. Langmuir, 16, 7464-7470. https://doi.org/10.1021/la000514b
[10]
Boubour, E. and Lennox, R.B. (2000) Potential-Induced Defects in n-Alkanethiol Self-Assembled Monolayers Monitored by Impedance Spectroscopy. The Journal of Physical Chemistry B, 104, 9004-9010. https://doi.org/10.1021/jp000151o
[11]
Zugle, R., Kambo-Dorsa, J. and Gadzekpo, V.P.Y. (2003) Detection of Metal Ions Using Ion-Channel Sensor Based on Self-Assembled Monolayer of Thioctic Acid. Talanta, 61, 837-848. https://doi.org/10.1016/S0039-9140(03)00377-1
[12]
Lu, X.Q., Li, M.R., Yang, C.H., Zhang, L.M., Li, Y.F., Jiang, L., Li, H.X., Jiang, L., Liu, C.M. and Hu, W.P. (2006) Electron Transport through a Self-Assembled Monolayer of Thiol-End-Functionalized Tetraphenylporphines and Metal Tetraphenylporphines. Langmuir, 22, 3035-3039. https://doi.org/10.1021/la052051l
[13]
Protsailo, L.V. and Fawcett, W.R. (2002) Electrochemical Impedance Spectroscopy at Alkanethiol-Coated Gold in Propylene Carbonate. Langmuir, 18, 8933-8941. https://doi.org/10.1021/la0201218