共聚物
分散性
聚合
双功能
材料科学
自由基聚合
光化学
化学
高分子化学
聚合物
催化作用
有机化学
作者
Shuaijie Chen,Minghui Yang,Haihui Li,Haitao Zhao,Xiang Xu,Weiwei He,Lifen Zhang,Zhenping Cheng
标识
DOI:10.1016/j.eurpolymj.2023.111850
摘要
Photoinduced reversible-deactivation radical polymerization (RDRP) has attracted great interest in virtue to their unique inherent advantages, such as low activation energy, environmentally benign reaction conditions and precision synthesis of designable functional polymeric materials. In this work, a facile and efficient strategy for preparing block copolymers was developed by the combination of near-infrared (NIR) light-controlled in-situ bromine-iodine transformation reversible-deactivation radical polymerization (BIT-RDRP) and purple LED light induced ring-opening polymerization (ROP). Herein, the macroinitiator was first synthesized via NIR light-controlled BIT-RDRP by using a bifunctional 2-hydroxyethyl 2-bromo-2-phenylacetate (EBP-OH) as the initiator at room temperature. Subsequently the block copolymers with narrow dispersity (low up to 1.06) were prepared by combination of purple LED light induced ROP through "two step" or "one pot" process. Importantly, the "one pot" strategy can greatly simplify the operation process and improve the synthesis efficiency, which will facilitate the batch preparation of block copolymers.
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