Step Transfer-Addition and Radical-Termination (START) Polymerization of ,-Unconjugated Dienes under Irradiation of Blue LED Light

作者：Xu, Tianchi; Yin, Hongnan; Li, Xiaohong; Zhang, Lifen^*; Cheng, Zhenping^*; Zhu, Xiulin

来源：Macromolecular Rapid Communications, 2017, 38(13): 1600587.

DOI：10.1002/marc.201600587

• -unconjugated dienes
• alternating copolymers
• fluorine
• photocatalysis
• step transfer-addition and radical-termination (START)

A new polymerization method, termed as step transfer-addition and radical-termination, is developed for the step-growth radical polymerization of ,-unconjugated dienes under irradiation of visible light at room temperature (25 degrees C) for the first time. ,-Diiodoperfluoroalkane monomers (signified as A) are added onto ,-unconjugated dienes (signified as B) alternatively and efficiently with the generation of perfluorocarbon-containing alternating copolymers (AB)(n). Based on the combined analyses of polymerization kinetics and NMR spectra (H-1 and F-19), the mechanism of the novel polymerization method, including the side reaction, is proposed. This novel polymerization method provides a new strategy not only for the step-growth radical polymerization of ,-unconjugated dienes but also for the construction of high molecular weight perfluorocarbon-containing alternating copolymers.

• 出版日期2017-7
• 单位苏州大学