光解瞬态自由基化学诱导动态电子极化(CIDEP)的四种机理  

The Four Generation Mechanisms of Chemically Induced Dynamic Electron Polarization (CIDEP) for Photolyzed Transient Radicals

作　　者：史蕾[1] 许新胜[1] 崔执凤[1] 

机构地区：[1]安徽师范大学物理与电子信息学院,安徽芜湖241000

出　　处：《安徽师范大学学报（自然科学版）》2010年第2期125-130,共6页Journal of Anhui Normal University(Natural Science)

基　　金：国家自然科学基金(NSFC20903004)

摘　　要：化学诱导动态电子自旋极化(CIDEP)来源于顺磁粒子在其自旋能级间的非Boltzmann分布,主要有四种形成机理即三重态机理(TM)、自由基对机理(RPM)、自旋相关自由基对机理(SCRP)、自由基-三重态对机理(RTPM).本文系统地介绍了这四种机理的概念和相应的物理和化学过程,列出了每种机理的极化强度表达式,分析了每种机理产生的CIDEP谱的典型特征并给出了代表性的实验谱线.The phenomenon of transient populations of electron spin states deviating from the Boltzmann distribution has been known as chemically induced dynamic electron polarization（CIDEP）.Up to now,there are four generations known to form CIDEP on photolyzed radicals,such as triplet mechanism,radical pair mechanism,spin-correlated radical pairs and radical-triplet pair mechanism.In this review,not only the CIDEP concept,but also the photophysical and photochemical process are introduced in detail.Furthermore,the polarization intensity expression,the characteristic CIDEP pattern and the representative experiment spectrum are also presented here.

关 键 词：CIDEP TM RPM SCRP RTPM 

分 类 号：O562.31[理学—原子与分子物理]