Determining the parameters governing the electrochemical stability of thiols and disulfides self-assembled monolayer on gold electrodes in physiological medium
Research output: Contribution to journal › Article › peer-review
Authors
Colleges, School and Institutes
Abstract
Herein we study the electrochemical potential-dependent and time-dependent stability of thiols and disulfides as self-assembled monolayers on gold electrodes. The stability of four representative sulfur-containing compounds: 3-mercaptopropionic acid, 2-mercaptoethanol, 1,4-dithiothreitol and dl-thioctic acid, was assessed in simulated physiological conditions (i.e. phosphate buffer saline). The stability of these molecules was evaluated using cyclic voltammetry and step-potential chronoamperometry. Coordination of the thiols and disulfides significantly affects the stability of the self-assembled monolayer. In addition, studies performed using gold single crystal (100) and (111) electrodes show the superior binding strength of the SAM on the Au(100) surface structure.
Details
Original language | English |
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Journal | Journal of Electroanalytical Chemistry |
Early online date | 20 Jul 2017 |
Publication status | E-pub ahead of print - 20 Jul 2017 |
Keywords
- Self-assembly monolayer of thiols, disulfides , electrochemistry , desorption , surface structure