Simple Electrochemical Procedure for Measuring the Rates of Electron Transfer across Liquid/Liquid Interfaces Formed by Coating Graphite Electrodes with Thin Layers of Nitrobenzene
Simple Electrochemical Procedure for Measuring the Rates of Electron Transfer across Liquid/Liquid Interfaces Formed by Coating Graphite Electrodes with Thin Layers of Nitrobenzene
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DOI：
10.1021/jp982605b
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发表时间：
1998-11
影响因子：
3.3
通讯作者：
Chunnian Shi and;F. Anson
中科院分区：
文献类型：
--
作者：
Chunnian Shi and;F. Anson
描述了一种简单的新方法，该方法允许以前所未有的容易度测量跨液/液界面的电子转移速率。该方法利用粘附在热解石墨电极表面的有机液体薄层。该方法被应用到硝基苯/水界面。溶解在硝基苯中的氧化还原反应物包括十甲基二茂铁和四苯基卟啉锌。相邻水相中的反应物是多电荷阴离子，包括Fe（CN）63-/4-、Ru（CN）64-、Mo（CN）84-和IrCl 62-。计算了跨相电子转移速率常数，并与最近采用A. J. Bard和他的同事们。
A simple, new method is described that allows the rates of electron transfer across liquid/liquid interfaces to be measured with unprecedented ease. The method takes advantage of thin layers of organic liquids that adhere to the surface of pyrolytic graphite electrodes. The method was applied to the nitrobenzene/water interface. Redox reactants dissolved in the nitrobenzene included decamethylferrocene and zinc tetraphenylporphyrin. Reactants in the adjoining aqueous phase were multiply charged anions, including Fe(CN)63-/4-, Ru(CN)64-, Mo(CN)84-, and IrCl62-. Rate constants for cross-phase electron transfer were evaluated and compared with those obtained in recent studies that employed the scanning electrochemical microscope that was invented and developed by A. J. Bard and co-workers.