Cyclic voltammetry and chronoamperometry: mechanistic tools for organic electrosynthesis
Cyclic voltammetry and chronoamperometry: mechanistic tools for organic electrosynthesis
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循环伏安法和计时电流法：有机电合成的机械工具
DOI：
10.1039/d2cs00706a
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发表时间：
2024
影响因子：
46.2
通讯作者：
Stahl, Shannon S.
中科院分区：
文献类型：
--
作者：
Rafiee, Mohammad;Abrams, Dylan J.;Cardinale, Luana;Goss, Zachary;Romero-Arenas, Antonio;Stahl, Shannon S.
电化学方法为化学合成提供了独特的优势，因为可以通过调节所施加的电势或电流来控制反应选择性。同样，测量反应过程中的电流或电势可以为这些反应提供有价值的机理见解。本教程回顾的目的是解释使用循环伏安法和计时电流法询问反应机制，优化电化学反应，或设计新的反应。循环伏安法和计时电流法实验的基本原理与这些技术的应用，以探针（电）化学反应。指出了使用循环伏安法和计时电流法分析耦合电化学化学（EC）反应的几个诊断标准，并提出了一系列单独的机理研究。使用微电极（ME）或旋转盘电极（RDE）的稳态伏安法和安培法测量提供了一种分析本体溶液中氧化还原活性物质浓度的方法，并提供了一种进行动力学分析或确定（电）合成化学反应期间存在的物质的通用策略。
Electrochemical methods offer unique advantages for chemical synthesis, as the reaction selectivity may be controlled by tuning the applied potential or current. Similarly, measuring the current or potential during the reaction can provide valuable mechanistic insights into these reactions. The aim of this tutorial review is to explain the use of cyclic voltammetry and chronoamperometry to interrogate reaction mechanisms, optimize electrochemical reactions, or design new reactions. Fundamental principles of cyclic voltammetry and chronoamperometry experiments are presented together with the application of these techniques to probe (electro)chemical reactions. Several diagnostic criteria are noted for the use of cyclic voltammetry and chronoamperometry to analyze coupled electrochemical–chemical (EC) reactions, and a series of individual mechanistic studies are presented. Steady state voltammetric and amperometric measurements, using microelectrodes (ME) or rotating disk electrodes (RDE) provide a means to analyze concentrations of redox active species in bulk solution and offer a versatile strategy to conduct kinetic analysis or determine the species present during (electro)synthetic chemical reactions.