TRANSIENT EFFECT IN FLUORESCENCE QUENCHING BY ELECTRON TRANSFER. 3. DISTRIBUTION OF ELECTRON TRANSFER DISTANCE IN LIQUID AND SOLID SOLUTIONS
TRANSIENT EFFECT IN FLUORESCENCE QUENCHING BY ELECTRON TRANSFER. 3. DISTRIBUTION OF ELECTRON TRANSFER DISTANCE IN LIQUID AND SOLID SOLUTIONS
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电子转移荧光淬灭的瞬态效应。
DOI：
10.1021/jp952732x
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
M. Tachiya
中科院分区：
文献类型：
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作者：
S. Murata;M. Tachiya
我们计算了电子转移距离的分布Y（r），Y（r）dr表示在r和r + dr之间的距离上电子转移的概率。ΔG对Y（r）分布的影响用以下参数来评估：6 A时的转移积分J0，其随距离的衰减系数β和扩散系数D。这些参数已经在先前的论文（J. Phys. Chem. 1995，99，5354）中通过实验（J0和β）或经验（D）确定。然后改变参数值以包括更常用的溶剂乙腈和宽范围的电子转移速率。这些结果表明，该分布不仅是ΔG的函数，而且是猝灭剂浓度的函数。这些结果不能简单地通过参考反应速率常数的距离依赖性来获得。这里考虑的分布具有实验意义，因为它是直接相关的…
We have calculated the distribution Y(r) of electron transfer distance which is defined in such a way that Y(r) dr represents the probability of electron transfer over a distance between r and r + dr. The effect of ΔG on the Y(r) distribution was evaluated using the following parameters: the transfer integral J0 at 6 A, its attenuation coefficient β with distance, and the diffusion coefficient D. These parameters have already been determined experimentally (J0 and β) or empirically (D) in a previous paper (J. Phys. Chem. 1995, 99, 5354). The parameter values were then changed to include the more commonly used solvent, acetonitrile, and a wide range of electron transfer rates. These results indicate that the distribution is not only a function of ΔG but also a function of the quencher concentration. These results cannot be obtained simply by referring to the distance dependence of the rate constant of the reaction. The distribution considered here has experimental significance, since it is directly relate...