稀土金属有机配合物催化共轭双烯烃高选择性聚合  

Highly Selective Polymerization of 1,3-Conjugated Dienes by Rare Earth Organometallic Complexes

作　　者：王子川[1,2] 刘东涛[1] 崔冬梅[1] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理与化学重点实验室,长春130022 [2]中国科学院大学长春分院,长春130022

出　　处：《高分子学报》2015年第9期989-1009,共21页Acta Polymerica Sinica

摘　　要：实现共轭双烯烃的高选择性聚合向来是配位聚合领域重要的研究课题.近十五年来,含茂基配体或多齿非茂配体的稀土金属有机配合物作为一种新兴的均相催化剂逐渐引起了人们的关注.根据1999-2014年间的文献报道,以催化剂的顺-1,4,反-1,4和3,4-选择性为分类标志,介绍了多种可高选择性催化共轭双烯烃聚合的稀土金属有机配合物以及人们对聚合活性种的探索,着重阐述中心金属的电子效应和离子半径、配体的几何构型、助催化剂的种类及溶剂、温度等聚合条件对催化剂活性和选择性的影响.通过归纳这些影响因素与聚合机理之间的联系,期望能为科研工作者在研究配位聚合与设计催化剂方面有所帮助.It is an essential subject for coordination polymerization to achieve highly selective polymerization of conjugated dienes. As an emerging kind of homogeneous catalyst,rare-earth metal complexes bearing metallocene or multidentate non-metallocene ligands have become gradually attractive over the past ten years and more. The major emphasis of this review will be these rare-earth metal complexes and the effect of various conditions on the selectivity and activity of polymerization,including the Lewis acidity and ionic radii of central metal,the geometry of ligand,the temperature of polymerization,the species of co-catalyst and solvent.Moreover,the study of active species which initiate the polymerization is particularly concerned. By generalizing the relationship between the factor and the mechanism of polymerization,it is hoped to give an inspiration to catalyst designer and the researchers of coordinate polymerization.

关 键 词：金属有机配合物 丁二烯 异戊二烯 选择性聚合 

分 类 号：O631.5[理学—高分子化学]