摘要
用傅立叶变换红外光谱法跟踪巯基峰面积的变化,研究硫醇 烯的反应动力学.当巯基和烯键等物质的量之比及烯键过量的情况下,按照一级反应处理硫醇 烯,以二苯甲酮为光敏剂时的动力学数据都能够得到较好的线性关系.当光敏剂分别为安息香乙醚、安息香双甲醚、安息香正丁醚和噻吨酮时,按照一级反应处理实验数据也能得到较好的线性关系.这说明硫醇 烯体系在紫外光照射下,由光敏剂引发的反应是一级反应,反应速率与硫醇浓度的一次方成正比.
The photochemical kinetics of the thiol-ene reaction was studied by tracing the change of hydrosulfide group with Fourier transform infrared spectrometry. The results showed that the reaction followed the first-order kinetics for stoichiometric thiol and ene function groups or for excessive ene group using benzophenone as the photosensitizer. The reaction also followed the first-order kinetics with benzoin ethyl ether, benzoin dimethyl ether, benzoin butyl ether or thioxanthen-9-one as the photosensitizer. The results indicated that the reaction of thiol and ene initiated by photosensitizer under ultraviolet radiation is first-order reaction and the reaction rate is in direct ratio to the concentration of thiol.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2004年第5期451-454,共4页
Journal of Tianjin University：Science and Technology
