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VNUHCM Journal of

Science and Technology Development

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam since 1997

ISSN: 1859-0128
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Study on the adsorption and desorption process of thiol-modified probe on gold electrodes using cyclic voltammetric method

Tien Huu Cao 1, *
Thien Quang Nguyen 1
Linh Van Ha 1
Hieu Van Le 1

  1. University of Science, VNU-HCM
Correspondence to: Tien Huu Cao, University of Science, VNU-HCM. Email: pvphuc@vnuhcm.edu.vn.
Volume & Issue: Vol. 18 No. 1 (2015) | Page No.: 5-13 | DOI: 10.32508/stdj.v18i1.1029
Published: 2015-03-31

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Copyright © 2015 by the author(s).

Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

In this paper, we study the electrochemical properties of selfassembling monolayers (SAM) created by the adsorption and desorption of the alkanethiol at the gold nanowires (AuNW) electrode surface by using the CV method. The analysis results show that the effectiveness of the desorption process reached over 90 %. The adoption of a negative voltage caused SAM desorption which resulted in the separation of SAM from the electrode. Our purpose is to reuse gold electrodes after they have been functionalized by SAM. Besides, results of this study also help to eliminate the electrochemical methods that make SAM eluted and therefore protect samples more effectively in the survey process.

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