Dynamics of flavin containing radical pairs in SDS micellar media probed by static and pulse magnetic field effect and pulse ADMR
Dynamics of flavin containing radical pairs in SDS micellar media probed by static and pulse magnetic field effect and pulse ADMR
复制标题
通过静态和脉冲磁场效应以及脉冲 ADMR 探测 SDS 胶束介质中含黄素自由基对的动力学
DOI：
10.1080/00268976.2019.1580779
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发表时间：
2019
影响因子：
1.7
通讯作者：
Naito Yusuke
中科院分区：
文献类型：
--
作者：
Maeda Kiminori;Naito Yusuke
采用时间分辨磁场效应（TR-SEMF）、脉冲吸收检测磁共振（ADMR）和吸收检测外磁场开关（AD-SEMF）技术研究了吲哚衍生物与黄素衍生物电子转移反应中自由基对的动力学。这三种技术互为补充，为自由基对动力学的精确分析提供了有力的工具。所有三种技术的结果反映了自由基的疏水性的差异在RP在胶束中的寿命。AD-SEMF分析克服了由于前体三重激发态的缓慢和不均匀的衰减动力学而导致的在近准稳态下测定短RP寿命的困难，使我们能够确定动力学参数，这与其他技术定性观察到的一致。
The dynamics of the radical pairs generated from the electron transfer reaction from indole derivatives to flavin derivatives are studied by three techniques, time resolved magnetic field effect (TR-MARY) and pulse absorption detected magnetic resonance (ADMR), and absorption detected switching of external magnetic field techniques (AD-SEMF). The three techniques complementarily work for the precise analysis of the radical pair kinetics. The results by all three techniques reflect the difference of the hydrophobic nature of the radicals in the lifetime of RP in a micelle. Overcoming the difficulty of the determination of the short RP lifetime under the nearly quasi steady state due to slow and inhomogeneous decay kinetics of the precursor triplet excited state, AD-SEMF analysis enabled us to determine the kinetic parameters, which is consistent with the qualitatively observed by the other techniques.