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本文总结了利用自己研制的高时间分辨率电子自旋共振波谱仪 ,在研究均相溶液与微复相体系中光解自由基的化学诱导动态电子极化 (CIDEP)方面所做的主要工作。首先介绍了高时间分辨率电子自旋共振波谱仪的原理与结构 ,然后报道对多种敏化剂分子的CIDEP研究。在乙二醇均相溶液中 ,苯醌、蒽醌、萘醌等为三重态极化的中性自由基。在表面活性剂TX - 10 0胶束体系中 ,获得了这些分子的负离子极化自由基。研究了含硫酸溶液中极化的苯醌自由基与溶液中的质子发生的交换现象。发现了二苯甲酮在液晶体系中的自旋相关极化。
This article summarizes the major work done in the study of chemically induced dynamic electron polarization (CIDEP) of photolysis free radicals in homogeneous solution and in the micro-multiphase system by using our own high-resolution electron spin resonance spectroscopy. Firstly, the principle and structure of high-resolution electron spin resonance spectrometer are introduced, and then CIDEP studies on various sensitizer molecules are reported. In ethylene glycol homogeneous solution, benzoquinone, anthraquinone, naphthoquinone and so on are triplet polarized neutral free radicals. In the surfactant TX - 10 0 micellar system, the negative ion polarization of these molecules was obtained. The exchange phenomenon of the proton-induced polarization of benzoquinone free radicals in solution with sulfuric acid was studied. The spin-dependent polarization of benzophenone in the liquid crystal system was found.