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首页> 外文期刊>Journal of photochemistry and photobiology, C. Photochemistry reviews >Spin-chemical approach to photochemistry: reaction control by spin quantum operation
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Spin-chemical approach to photochemistry: reaction control by spin quantum operation

机译：光化学的自旋化学方法：通过自旋量子操作进行反应控制

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摘要

In this review, the contribution of spin chemistry (in particular, magnetic resonance-related chemistry) to the photochemical field is briefly introduced. First, the development of a time-resolved EPR method and its significant application to radical-related physical phenomena and chemical reactions are presented. Second, a reaction-control method by means of electron spin operations is introduced, and several reaction yield-detected magnetic resonance (RYDMR) methods are presented as applications of this concept. One of the most important physical conclusions is the introduction of the concept of "spin phase relaxation" termed singlet-triplet (S-T) and triplet-triplet (T-T) dephasing, instead of the traditional concepts of longitudinal (T_1) and transversal relaxations (T_2). The effects of strong microwave power on the RYDMR spectrum and time-domain data are analyzed according to this concept. Furthermore, a new detection method is introduced, termed "photoconductivity detected magnetic resonance" (PCDMR), which is applicable exclusively to the system of charge transfer reactions.
机译：在这篇综述中，简要介绍了自旋化学（特别是磁共振相关化学）对光化学领域的贡献。首先，介绍了时间分辨EPR方法的发展及其在自由基相关的物理现象和化学反应中的重要应用。其次，介绍了一种通过电子自旋操作的反应控制方法，并提出了几种反应产率检测磁共振（RYDMR）方法作为该概念的应用。最重要的物理结论之一是引入了称为单相三重态（ST）和三重态三重态（TT）移相的“自旋相弛豫”概念，而不是传统的纵向弛豫（T_1）和横向弛豫（T_2）概念）。根据此概念，分析了强大的微波功率对RYDMR频谱和时域数据的影响。此外，引入了一种新的检测方法，称为“光电导检测磁共振”（PCDMR），该方法仅适用于电荷转移反应系统。

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