Thin-Layer Electrochemistry of 1,3-Diferrocenyl-2-buten-1-one: Direct Correlation between Driving Force and Liquid/Liquid Interfacial Electron Transfer Rates
Thin-Layer Electrochemistry of 1,3-Diferrocenyl-2-buten-1-one: Direct Correlation between Driving Force and Liquid/Liquid Interfacial Electron Transfer Rates
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DOI：
10.1021/jp049104c
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发表时间：
2004-04
影响因子：
3.3
通讯作者：
Jie Xu;Amir Frcic;Jason A. C. Clyburne;and Robert A. Gossage;Hua-Zhong Yu
中科院分区：
文献类型：
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作者：
Jie Xu;Amir Frcic;Jason A. C. Clyburne;and Robert A. Gossage;Hua-Zhong Yu
采用薄层法研究了具有两个电化学不等价氧化还原中心的新型分子1，3-双二茂铁基-2-丁烯-1-酮（简称DFcB）的循环伏安行为.同时获得了有机相中DFcB与相邻水相中[Fe（CN）6]4-之间两步电子转移反应的双分子速率常数。所观察到的速率常数对总驱动力（由DFcB中二茂铁基的表观形式势主导）的明显依赖性与以前的研究一致，并且定性地与传统的Butler−Volmer处理一致。结果表明，使用含有多个氧化还原中心的分子来研究在液/液界面的热力学驱动力和电子转移动力学之间的相关性的可行性。
The cyclic voltammetric behavior of 1,3-diferrocenyl-2-buten-1-one (abbreviated as DFcB), a novel molecule with two electrochemically nonequivalent redox centers, was investigated by the thin-layer method, a simple protocol reported recently for studying electron transfer reactions at liquid/liquid interfaces. The bimolecular rate constants for the two-step electron transfer reactions between DFcB in the organic phase and [Fe(CN)6]4- located in the adjacent aqueous phase were obtained simultaneously at a single interface. The observed clear dependence of the rate constants on the overall driving force (dominated by the apparent formal potentials of the ferrocenyl groups in DFcB) is consistent with previous studies and qualitatively in agreement with the conventional Butler−Volmer treatment. The results demonstrate the feasibility of using molecules containing multiple redox centers to study the correlation between the thermodynamic driving force and electron transfer kinetics at liquid/liquid interfaces.