Functionalized Polyesters via Stereoselective Electrochemical Ring-Opening Polymerization of O -Carboxyanhydrides
Functionalized Polyesters via Stereoselective Electrochemical Ring-Opening Polymerization of O -Carboxyanhydrides
复制标题
通过 O-羧酸酐的立体选择性电化学开环聚合制备功能化聚酯
DOI：
10.1021/acsmacrolett.0c00364
复制
发表时间：
2020
影响因子：
7.015
通讯作者：
Tong, Rong
中科院分区：
文献类型：
--
作者：
Zhong, Yongliang;Feng, Quanyou;Wang, Xiaoqian;Chen, Jia;Cai, Wenjun;Tong, Rong
开环聚合用于制备具有精确控制的分子量、分子量分布和立构规整度的聚酯。在此，我们报道了一种Co/Zn催化体系，该体系可以通过电流激活来介导对映体纯O-羧酸酐的有效开环聚合，从而合成具有高分子量（> 140 kDa）和窄分子量分布（Mw / Mn < 1.1）的全同立构官能化聚酯。我们还证明，这些催化剂可用于外消旋O-羧酸酐的立体选择性开环聚合，以合成与其无规对应物相比具有不同玻璃化转变温度的间规或立构嵌段共聚物。
Ring-opening polymerization is used to prepare polyesters with precisely controlled molecular weights, molecular weight distributions, and tacticities. Herein, we report a Co/Zn catalytic system that can be activated by an electrical current to mediate efficient ring-opening polymerization of enantiopureO-carboxyanhydrides, allowing for the synthesis of isotactic functionalized polyesters with high molecular weights (>140 kDa) and narrow molecular weight distributions (Mw/Mn< 1.1). We also demonstrate that these catalysts can be used for stereoselective ring-opening polymerization of racemicO-carboxyanhydrides to synthesize syndiotactic or stereoblock copolymers with different glass transition temperatures compared with their atactic counterparts.