Zhang Weidong, Zhang Wei, Zhang Zhengbiao, Zhu Jian, Zhu Xiulin
Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China.
Macromol Rapid Commun. 2010 Aug 3;31(15):1354-8. doi: 10.1002/marc.201000008. Epub 2010 May 11.
A clickable alkyne monomer, PgMA, was successfully polymerized in a well-controlled manner via single electron transfer initiation and propagation through the radical addition fragmentation chain transfer (SET-RAFT) method. The living nature of the polymerization was confirmed by the first-order kinetic plots, the linear relationships between molecular weights and the monomer conversions while keeping relatively narrow $\overline M _{\rm w} /\overline M _{\rm n}$ (≤1.55), and the successful chain-extension with MMA. The better controllability of SET-RAFT than other CRP methods is attributed to the less competitive termination in view of the presence of the CTA as well as the Cu(II) that is generated in situ. Moreover, a one-pot/one-step technique combining SET-RAFT and "click chemistry" methods has been successfully employed to prepare the side-chain functionalized polymers.
一种可点击的炔烃单体PgMA，通过单电子转移引发以及经由自由基加成断裂链转移（SET-RAFT）方法进行的链增长，以良好控制的方式成功聚合。通过一级动力学曲线、分子量与单体转化率之间的线性关系（同时保持相对较窄的 $\overline M _{\rm w} /\overline M _{\rm n}$（≤1.55））以及与甲基丙烯酸甲酯（MMA）成功的链增长，证实了聚合反应的活性特征。鉴于链转移剂（CTA）以及原位生成的铜（II）的存在，SET-RAFT比其他可控自由基聚合（CRP）方法具有更好的可控性，这归因于其终止反应的竞争性较小。此外，一种将SET-RAFT和“点击化学”方法相结合的一锅/一步技术已成功用于制备侧链功能化聚合物。
