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在285 nm紫外激光辐照下,用时间分辨电子自旋共振(TRESR)波谱仪研究了对苯醌/乙二醇(PBQ/EG)体系,得到了发射的苯半醌中性自由基PBQH.和乙二醇碳自由基R.(OH)2的CIDEP谱.在化学诱导动态电子极化(CIDEP)基本原理的基础上,建立合理的计算模型,编写相应的程序,对PBQH.和R.(OH)2的CIDEP形成机理进行了定量的解析.通过对不同延时下该体系各种自由基及不同机理成分的对比,明显看出由RPM形成的PBQH.比由TM形成的PBQH.衰减快.这种分析方法可以推广应用于其它体系的CIDEP实验谱的解析.
The p-benzoquinone / ethylene glycol (PBQ / EG) system was studied by time-resolved electron spin resonance (TRESR) spectroscopy at 285 nm UV laser irradiation. (CIDEP) spectrum of ethylene glycol carbon radical R. (OH) 2 on the basis of the principle of chemical induced dynamic electron polarization (CIDEP), establish a reasonable calculation model and write the corresponding program. (OH) 2 was quantitatively analyzed.Compared with various free radicals and different mechanism components of the system under different delay, it is obvious that the PBQH formed by RPM is better than the PBQH formed by TM. This method of analysis can be used to generalize the resolution of CIDEP experimental spectra used in other systems.