光解丙酮/乙二醇体系的CIDEP实验研究  

An experimental investigation on the CIDEP of acetone/EG system

作　　者：朱光来[1] 许新胜[1] 洪新[1] 季学韩[1] 崔执凤[1] 陆同兴[1] 

机构地区：[1]安徽师范大学物理系原子与分子物理实验室,芜湖241000

出　　处：《原子与分子物理学报》2006年第6期1025-1028,共4页Journal of Atomic and Molecular Physics

基　　金：安徽省原子与分子物理重点学科基金

摘　　要：紫外激光照射下,用时间分辨电子自旋共振(TRESR)波谱仪研究了光解ACETONE/EG体系的化学诱导动态电子极化(CIDEP),得到了丙酮羰自由基(CH3)2C.OH和乙二醇羰自由基CH2OH C.HOH的发射/吸收(E/A)型极化信号,这是一个RPM极化过程.在胶束环境中,不同表面活性剂以及不同的浓度对体系极化的影响是不同的.阳离子表面活性剂CTAB对体系中生成的自由基的极化机理没有产生显著影响,而加入体系中TX-100的浓度对体系的极化机理却产生了很大的影响.在ACETONE/EG体系中,随着TX-100浓度的增加,TM机理对极化强度的贡献明显增大.When the acetone/EG system was photdyzed, the E/A pattern CIDEP spectrum of （CH3）2COH and CH2OH CHOH generated from RPM were obtained experimentally with the time-resolved ESR spectrometer. In micellar mieroenvironment, different micellar and its concentration have different influence on CIDEP. With the addition of CTAB to sample solution, the polarization mechanism and the signal intensity were the same as in homogenous solutions. When ACETONE/EG/TX-100 mieellar solution was photolyzed, the TM accompanying the RPM appeared and the relative ratio of TM to RPM increased with the increasing of TX-100 concentration.

关 键 词：化学诱导动态电子自旋极化 自由基对机理 丙酮 胶束 

分 类 号：O56[理学—原子与分子物理]