论文部分内容阅读
用自制的高时间分辨电子自旋共振波谱仪,测量得到了酸性、碱性和胶束环境下的光解杜醌/乙二醇(DQ/EG)溶液瞬态自由基的化学诱导动态电子自旋极化(CIDEP)谱.在光解均相DQ/EG溶液时,观察到了以增强发射的的中性杜半醌自由基(DQH.)的CIDEP信号;在碱性环境下(pH=9)和TX-100胶束环境下光解DQ/EG体系时得到杜醌负离子自由基(DQ-.)的CIDEP信号;在酸性环境下(pH=2.5)光解DQ/EG体系时,出现的又是中性杜半醌自由基(DQH.)的CIDEP信号.实验结果显示,DQH.由3DQ*与EG之间的氢原子转移反应生成,DQ.-由DQH.的去质子化反应生成,反应中伴随着极化转移.
The self-made, high-resolution electron spin resonance spectroscopy was used to measure the chemical-induced dynamic electronic transition of free radical in photolytic diquinane / ethylene glycol (DQ / EG) solution under acid, alkaline and micellar conditions (CIDEP) spectra.When photolysis of the homogeneous DQ / EG solution, a CIDEP signal was observed to enhance the emission of neutral Dulquinone Radicals (DQH.); In an alkaline environment (pH = 9 ) And DQ-. When the DQ / EG system was photolyzed in acidic environment (pH = 2.5), the CIDEP signal of DQ- It is also a CIDEP signal of neutral DQH. The experimental results show that DQH is formed by the hydrogen atom transfer reaction between 3DQ * and EG, DQ.- is formed by deprotonation of DQH. The reaction is accompanied by polarization.