In situ Real Time Electrochemical Measurement of Kinetics of Thiol Adsorption on Gold using Microelectrode

Ilwhan Oh; Joohong Kye; Seongpil Hwang

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In situ Real Time Electrochemical Measurement of Kinetics of Thiol Adsorption on Gold using Microelectrode

机译：用微电极原位实时电化学测量硫醇在金上的吸附动力学

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The growth kinetics of a self-assembled monolayer (SAM) in solution was measured in situ in realtime electrochemistry using microelectrode. The steady-state current produced by the oxidation offerrocene in the presence of a microelectrode was recorded as a function of time. Introduction of 11- mercaptoundecanoic acid (MUA) into the electrochemical cell produced a decrease in the steady-statecurrent related to formation of an insulating MUA SAM. The current decrease permitted monitoring ofthe SAM coverage formation over time. The time constants derived from fitting the time-dependentcurrent to the rearrange-limited Langmuir model agreed well with previously reported resultsdetermined using other techniques, demonstrating that our simple method can reliably characterizeSAM adsorption kinetics.

机译：使用微电极在实时电化学中原位测量溶液中自组装单分子层（SAM）的生长动力学。记录在微电极存在下由氧化茂铁产生的稳态电流与时间的关系。将11-巯基十一烷酸（MUA）引入电化学电池中会导致与绝缘MUA SAM形成有关的稳态电流降低。电流的减小允许随时间监视SAM覆盖范围的形成。通过将时变电流拟合到重排限制的Langmuir模型而得出的时间常数与使用其他技术确定的先前报道的结果非常吻合，这表明我们的简单方法可以可靠地表征SAM吸附动力学。

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《International Journal of Electrochemical Science》 |2011年第11期|共9页
作者
Ilwhan Oh; Joohong Kye; Seongpil Hwang;
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1. In situ real time monitoring of kinetics of thiol adsorption on gold based on electrochemical steady-state current [J] . Kye J., Hwang S. Electrochemistry communications . 2011,第11期

机译：基于电化学稳态电流的原位实时监测硫醇在金上的吸附动力学
2. Formation and characterization of aromatic selenol and thiol monolayers on gold:in-situ IR studies and electrochemical measurements [J] . Yukari Sato, Fumio Mizutani Physical chemistry chemical physics: PCCP . 2004,第6期

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3. In situ monitoring of kinetics of charged thiol adsorption on gold using an atomic force microscope [J] . Hu K., Bard AJ. Langmuir: The ACS Journal of Surfaces and Colloids . 1998,第17期

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In situ Real Time Electrochemical Measurement of Kinetics of Thiol Adsorption on Gold using Microelectrode

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