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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Diffusion-controlled reactions: Hydrodynamic interaction between charged, uniformly reactive spherical reactants
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Diffusion-controlled reactions: Hydrodynamic interaction between charged, uniformly reactive spherical reactants

机译：扩散控制的反应：带电的均匀反应性球形反应物之间的流体动力学相互作用

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摘要

In this work, different models of hydrodynamic interaction (HI) are examined in the diffusion-controlled reaction between uniformly reactive charged spherical particles. In addition to Oseen "stick" and "slip" models of HI, one is considered that accounts for the disturbance of fluid flow by the ions around one reactive partner as they interact with a neighboring reactive species. This interaction is closely related to the "electrophoretic effect" in electrokinetics and can be described by a fairly simple electrophoretic, or E-tensor. These models are applied to the electron-transfer quenching reaction of Ru(bpy)(3)(2+) and methyl viologen (MV2+) over a wide range of NaCl concentrations (Chiorboli, C. et al., J. Phys. Chem. 1988, 92, 156). The back reaction is also considered. From a comparison of the salt dependence of the model and experimental rates, it is concluded that the "E-tensor" model works best and ignoring HI altogether works worst. The Oseen "stick" and "slip" models fall between these.
机译：在这项工作中，在均匀反应的带电球形颗粒之间的扩散控制反应中，研究了不同模型的流体动力学相互作用（HI）。除了HI的Oseen的“粘滞”和“滑移”模型外，还考虑了一种离子在与邻近的反应性物质相互作用时围绕一个反应性伙伴周围的离子对流体流动的干扰的原因。这种相互作用与电动学中的“电泳效应”密切相关，可以用相当简单的电泳或电子张量来描述。这些模型适用于Ru（bpy）（3）（2+）和甲基紫精（MV2 +）在广泛的NaCl浓度范围内的电子转移猝灭反应（Chiorboli，C. et al。，J.Phys.Chem 1988，92，156）。还考虑了逆反应。通过对模型的盐依赖性和实验速率的比较，可以得出结论：“ E张量”模型效果最佳，而完全忽略HI效果最差。 Oseen的“ stick”和“ slip”模型介于两者之间。

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