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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >A Three-Step Kinetic Model for Electrochemical Charge Transfer in the Hopping Regime
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A Three-Step Kinetic Model for Electrochemical Charge Transfer in the Hopping Regime

机译：跳跃态下电荷转移的三步动力学模型

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摘要

Single-step nonadiabatic electron tunneling models are widely used to analyze electrochemical rates through self-assembled monolayer films (SAMs). For some systems, such as nucleic acids, long-range charge transfer can occur in a “hopping” regime that involves multiple charge transfer events and intermediate states. This report describes a three-step kinetic scheme to model charge transfer in this regime. Some of the features of the three-step model are probed experimentally by changing the chemical composition of the SAM. This work uses the three-step model and a temperature dependence of the charge transfer rate to extract the charge injection barrier for a SAM composed of a 10-mer peptide nucleic acid that operates in the hopping regime.
机译：单步非绝热电子隧穿模型已广泛用于通过自组装单层膜（SAMs）分析电化学速率。对于某些系统，例如核酸，长距离电荷转移可能会以“跳跃”方式发生，其中涉及多个电荷转移事件和中间状态。该报告描述了一种三步动力学方案，以模拟此状态下的电荷转移。通过更改SAM的化学成分，实验性地探索了三步模型的某些功能。这项工作使用了三步模型和电荷转移速率的温度依赖性，以提取由以跳跃方式运行的10-mer肽核酸组成的SAM的电荷注入势垒。

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