Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode

Abdunnaser Mohamed Etorki; Haddi Omar Reghei

doi:doi:10.11648/j.ajpc.20140305.13

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Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode

Abdunnaser Mohamed Etorki, Haddi Omar Reghei

Received: 25 September 2014 Accepted: 8 October 2014 Published: 30 October 2014

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Abstract

Modification of a gold electrode of an electrochemical quartz crystal microbalance (EQCM) has been achieved by immobilizing a bis(2,2--bipyridyl)copper(II) complex on a self-assembled monolayer (SAM) of 1-mercapto-11-undecanoic acid (MUA). The electrostatic interaction of the negatively charged SAM with a di-positive copper complex allowed the attachment. The modified electrode exhibited excellent redox behavior. Electro-statically immobilized on a SAM gold modified electrode is reported. A carboxylic acid terminated monolayer was utilized to provide a chemically uniform surface. The dependence of the modified electrode response was investigated in terms of pH, supporting electrolyte and ionic strength. X-ray photoelectron spectroscopy (XPS) was also employed to study the chemical interactions between bis(2,2--bipyridyl)copper(II) and 1-mercapto-11-undecanoic acid (MUA). XPS provides identification of the sorption sites involved in the accumulation of bis(2,2--bipyridyl)copper(II), as well as the forms of species sorbed on the self-assembled monolayer. It is found that sorption occurs on carboxlic functional groups.

DOI	10.11648/j.ajpc.20140305.13
Published in	American Journal of Physical Chemistry (Volume 3, Issue 5, October 2014)
Page(s)	67-71
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Self-Assembled Monolayer, Quartz Crystal Microbalance, XPS, Adsorption, Modified Electrode

References

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Abdunnaser Mohamed Etorki, Haddi Omar Reghei. (2014). Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode. American Journal of Physical Chemistry, 3(5), 67-71. https://doi.org/10.11648/j.ajpc.20140305.13

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Abdunnaser Mohamed Etorki; Haddi Omar Reghei. Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode. Am. J. Phys. Chem. 2014, 3(5), 67-71. doi: 10.11648/j.ajpc.20140305.13

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AMA Style

Abdunnaser Mohamed Etorki, Haddi Omar Reghei. Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode. Am J Phys Chem. 2014;3(5):67-71. doi: 10.11648/j.ajpc.20140305.13

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@article{10.11648/j.ajpc.20140305.13,
  author = {Abdunnaser Mohamed Etorki and Haddi Omar Reghei},
  title = {Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode},
  journal = {American Journal of Physical Chemistry},
  volume = {3},
  number = {5},
  pages = {67-71},
  doi = {10.11648/j.ajpc.20140305.13},
  url = {https://doi.org/10.11648/j.ajpc.20140305.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.20140305.13},
  abstract = {Modification of a gold electrode of an electrochemical quartz crystal microbalance (EQCM) has been achieved by immobilizing a bis(2,2--bipyridyl)copper(II) complex on a self-assembled monolayer (SAM) of 1-mercapto-11-undecanoic acid (MUA). The electrostatic interaction of the negatively charged SAM with a di-positive copper complex allowed the attachment. The modified electrode exhibited excellent redox behavior. Electro-statically immobilized on a SAM gold modified electrode is reported. A carboxylic acid terminated monolayer was utilized to provide a chemically uniform surface. The dependence of the modified electrode response was investigated in terms of pH, supporting electrolyte and ionic strength. X-ray photoelectron spectroscopy (XPS) was also employed to study the chemical interactions between bis(2,2--bipyridyl)copper(II) and 1-mercapto-11-undecanoic acid (MUA). XPS provides identification of the sorption sites involved in the accumulation of bis(2,2--bipyridyl)copper(II), as well as the forms of species sorbed on the self-assembled monolayer. It is found that sorption occurs on carboxlic functional groups.},
 year = {2014}
}

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TY - JOUR
T1 - Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode
AU - Abdunnaser Mohamed Etorki
AU - Haddi Omar Reghei
Y1 - 2014/10/30
PY - 2014
N1 - https://doi.org/10.11648/j.ajpc.20140305.13
DO - 10.11648/j.ajpc.20140305.13
T2 - American Journal of Physical Chemistry
JF - American Journal of Physical Chemistry
JO - American Journal of Physical Chemistry
SP - 67
EP - 71
PB - Science Publishing Group
SN - 2327-2449
UR - https://doi.org/10.11648/j.ajpc.20140305.13
AB - Modification of a gold electrode of an electrochemical quartz crystal microbalance (EQCM) has been achieved by immobilizing a bis(2,2--bipyridyl)copper(II) complex on a self-assembled monolayer (SAM) of 1-mercapto-11-undecanoic acid (MUA). The electrostatic interaction of the negatively charged SAM with a di-positive copper complex allowed the attachment. The modified electrode exhibited excellent redox behavior. Electro-statically immobilized on a SAM gold modified electrode is reported. A carboxylic acid terminated monolayer was utilized to provide a chemically uniform surface. The dependence of the modified electrode response was investigated in terms of pH, supporting electrolyte and ionic strength. X-ray photoelectron spectroscopy (XPS) was also employed to study the chemical interactions between bis(2,2--bipyridyl)copper(II) and 1-mercapto-11-undecanoic acid (MUA). XPS provides identification of the sorption sites involved in the accumulation of bis(2,2--bipyridyl)copper(II), as well as the forms of species sorbed on the self-assembled monolayer. It is found that sorption occurs on carboxlic functional groups.
VL - 3
IS - 5
ER -

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Author Information

Abdunnaser Mohamed Etorki

Department of Chemistry, University of Tripoli, Tripoli, Libya
Haddi Omar Reghei

Department of Chemistry, University of Tripoli, Tripoli, Libya

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Abdunnaser Mohamed Etorki, Haddi Omar Reghei. (2014). Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode. American Journal of Physical Chemistry, 3(5), 67-71. https://doi.org/10.11648/j.ajpc.20140305.13

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ACS Style

Abdunnaser Mohamed Etorki; Haddi Omar Reghei. Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode. Am. J. Phys. Chem. 2014, 3(5), 67-71. doi: 10.11648/j.ajpc.20140305.13

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AMA Style

Abdunnaser Mohamed Etorki, Haddi Omar Reghei. Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode. Am J Phys Chem. 2014;3(5):67-71. doi: 10.11648/j.ajpc.20140305.13

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@article{10.11648/j.ajpc.20140305.13,
  author = {Abdunnaser Mohamed Etorki and Haddi Omar Reghei},
  title = {Electrochemical Quartz Crystal Microbalance Study of the Behaviour of Bis(2,2--Bipyridyl)Copper(II) Complex Immobilized on a Self-Assembled Monolayer Modified Gold Electrode},
  journal = {American Journal of Physical Chemistry},
  volume = {3},
  number = {5},
  pages = {67-71},
  doi = {10.11648/j.ajpc.20140305.13},
  url = {https://doi.org/10.11648/j.ajpc.20140305.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.20140305.13},
  abstract = {Modification of a gold electrode of an electrochemical quartz crystal microbalance (EQCM) has been achieved by immobilizing a bis(2,2--bipyridyl)copper(II) complex on a self-assembled monolayer (SAM) of 1-mercapto-11-undecanoic acid (MUA). The electrostatic interaction of the negatively charged SAM with a di-positive copper complex allowed the attachment. The modified electrode exhibited excellent redox behavior. Electro-statically immobilized on a SAM gold modified electrode is reported. A carboxylic acid terminated monolayer was utilized to provide a chemically uniform surface. The dependence of the modified electrode response was investigated in terms of pH, supporting electrolyte and ionic strength. X-ray photoelectron spectroscopy (XPS) was also employed to study the chemical interactions between bis(2,2--bipyridyl)copper(II) and 1-mercapto-11-undecanoic acid (MUA). XPS provides identification of the sorption sites involved in the accumulation of bis(2,2--bipyridyl)copper(II), as well as the forms of species sorbed on the self-assembled monolayer. It is found that sorption occurs on carboxlic functional groups.},
 year = {2014}
}

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