Zinc bis-Schiff base complexes： Synthesis, structure, and application in ring-opening polymerization of rac-lactide

作     者：Zhong-Ran Dai Chang-Feng Yin Cheng Wang Jin-Cai Wu 

作者机构：State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province College of Chemistry and Chemical Engineering Lanzhou 730000 China The Second Affiliated Hospital of Lanzhou University Lanzhou 730000 China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2016年第27卷第11期

页      面：1649-1654页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by National Natural Science Foundation of China(Nos.21271092,21171078,and 21401161) the Science Foundation of Gansu Province of China(No.1308RJ2A121) 

主　　题：Rac lactide Catalyst Zinc complex Ring opening polymerization 

摘      要：A series of bis-ligated zinc complexes supported by Schitt base ligands were successfully synthesized and characterized by 1 H, 13C NMR, elemental analysis, and X-ray crystallography. These zinc complexes can be used as catalysts for the polymerization of rac-lactide in solution as well as in molten lactide. The results show that all catalysts exhibited high catalytic activity and obtained moderate heterotactic PLAs with the expected molecular weight. Complex 1 can catalyze the polymerization of rac-lactide under controllable conditions with living and immortal character in toluene solution. In addition, the steric hindrance and electronic effects has a great influence on the catalytic activity and selectivity of catalysts.