摘要
本文测定了两种新型阳离子光聚合引发剂二茂铁四氟硼酸盐 ([Cp Fe Cp]BF4 )和环戊二烯基 铁 萘四氟硼酸盐 ([Cp Fe Naph]BF4 )在二氯甲烷和环氧氯丙烷中的紫外 可见吸收光谱 ,研究了紫外光照射对吸收光谱的影响 ,通过实时紫外 可见吸收光谱分析 ,研究了两种光引发剂在环氧氯丙烷中的光解动力学。发现二者的吸收光谱随光照时间的变化规律一致 ,而且光解反应均为一级反应 ,速率常数分别为 0 72和 0 6 5min- 1 ,从而提出了二茂铁四氟硼酸盐的光引发机理。
The absorption spectra of photoinitiator cyclopentadiene-Fe-naphthalene tetrafluoroborate salt ([Cp-Fe-Naph]BF4) and ferrocinium tetrafluoroborate salt ([Cp-Fe-Cp]BF4), in two solvents have been studied. The influence of irradiation on the solution of photoinitiator has been observed. The kinetics of photolysis has been determined by real-time UV absorption spectrum. The results show that the photolysis reactions of two initiators are the first order reaction, the rate constant of photolysis reaction are 0.72 and 0.65 min(-1), respectively. The photoinitiated mechanism of [Cp-Fe-Cp]BF4 was obtained.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2002年第6期920-924,共5页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金资助项目 (2 97760 0 2 )
