电极与桥式氧化还原反应之间的电子转移速率
Electron Transfer rate between a electrode and a bridged redox
摘要:
本文导出了一个明确的偏压依赖的电子转移反应速率的表达式,它是通过一个任意长度的桥连分子从溶剂化氧化还原到电极。溶剂化的氧化还原与溶剂的相互作用被建模为一个经典的谐振子浴。研究了竞争过程,即氧化还原与桥之间的共振隧穿和氧化还原的溶剂化作用的影响。绘制了5原子桥的情况下的图。我们的分析表明,在一定的中电压范围内,对于一定的最近邻耦合值,有可能阻止电子转移
英文摘要:
We derive an explict bias dependent expression for electron transfer reaction rate from a solvated redox to a electrode through a bridged molecule of arbitrary length. The interaction of the solvated redox with the solvent is modelled as a classical harmonic oscillator bath. The effect of competing process, namely resonance tunneling between redox and bridge and the solvation of the redox is investigated. Plots were produced for the case of 5 atom bridge. Our analysis shows that for certain suitable value of nearest-neighbour coupling, it is possible to block electron transfer in certain intermediate voltage regime
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