摘要
针对于光化学基本理论的实验教学对于应用化学专业的学生培养具有重要意义,将蒽与碘鎓盐的光电子转移可行性判断,以及蒽/碘鎓盐引发丙烯酸酯单体的聚合实验设计为应用化学专业的综合实验,以培养学生对光化学基本理论的理解。学生通过紫外-可见吸收光谱、荧光激发光谱和循环伏安实验获得实验数据,依据Rehm-Weller方程计算获得蒽与碘鎓盐之间光电子转移的自由能变,并通过光聚合实验学习光电子转移增感引发体系的应用。
In view of the basic theory of photochemistry teaching is of great significance for the applied chemistry students. In this paper, the feasibility of photoelectron transfer of anthracene and iodonium salt and the polymerization experiment of acrylate monomer initiated by anthracene/iodonium salt were designed to cultivate students’ understanding of the basic theory of photochemistry. The students obtained experimental data by UV-Vis absorption spectroscopy, fluorescence excitation spectroscopy and cyclic voltammetry. The free energy change of photoelectron transfer between anthracene and iodonium salts was then calculated according to the Rehm-Weller equation. Application of sensitization system was studied by photopolymerization experiments.
作者
王涛
薛探龙
王志华
WANG Tao;XUE Tan-Long;WANG Zhi-Hua(College of Chemistry,Beiing University of Chemical Technology,Beijing 100029,China)
出处
《化学教育（中英文）》
CAS
北大核心
2020年第22期54-57,共4页
Chinese Journal of Chemical Education
关键词
光化学
光电子转移
敏化光聚合
综合实验
photochemistry
photoelectron transfer
sensitized photopolymerization
comprehensive experiment
