后过渡金属催化烯烃可控/活性聚合的研究进展  

RECENT PROGRESS IN LATE TRANSITION METAL CATALYSTS FOR CONTROLLED/LIVING OLEFIN POLYMERIZATION

作　　者：胡海斌 高海洋[1] 伍青[1] 

机构地区：[1]新型聚合物材料设计合成与应用广东省高校重点实验室聚合物复合材料与功能材料教育部重点实验室中山大学化学与化学工程学院,广州510275

出　　处：《高分子学报》2011年第9期965-972,共8页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号20734004)资助

摘　　要：烯烃活性聚合由于可以制备出预定分子量的窄分布聚合物,以及各种嵌段共聚物、末端功能化聚合物等而受到广泛关注.过渡金属催化的烯烃配位聚合反应活性高,催化剂性能可通过配体结构的修饰进行调节,聚合物微观结构易于调控,其活性聚合进一步拓展了对烯烃聚合物分子设计的手段,具有重要的意义.除了以钛、锆、钒等为金属中心的前过渡系催化剂之外,近年来以镍、钯为代表的后过渡金属催化剂在烯烃活性聚合方面也得到迅速发展,并且在聚合物支化和极性单体共聚控制上有其独特之处.本文系统总结了后过渡金属催化剂在烯烃活性聚合方面的研究进展,概括了影响活性聚合特征的各种因素,并将其与前过渡系催化剂进行对比.Since its discovery,living olefin polymerization has attracted much attention due to its ability to produce polymers with pre-determined molecular weight and narrow molecular weight distribution,various block copolymers and end-functionalized polymers.Metal-catalyzed olefin polymerization was considered to be highly active and superior in stereochemistry control.Therefore,their living polymerization has been paid much attention in the past decade.Complexes with early-transition metal centers such as Ti and Zr have been investigated comprehensively in catalytic olefin polymerization,and many of them are found to exhibit living behavior.In comparison,late transition metal catalysts are rare with regard to catalytic living olefin polymerization,but they develop rapidly and act differently to their early transition analogues.In this review,advances in late transition metal catalysts for living olefin polymerization and related factors affecting the living behavior are summarized.A comparison is made between late-transition living polymerization catalysts and those of the early-transition metals.

关 键 词：后过渡金属 烯烃聚合 活性聚合 催化剂 

分 类 号：O631.5[理学—高分子化学]