氧化还原调控型催化剂在烯烃聚合中的应用

Without a doubt, catalyst is always the key of olefin polymerization catalysis. However, in recent years, the complexity and consuming of time increase exponentially for the generation of new catalysts. Once a ligand is chosen, the coordination environment of the catalyst is fixed, and this determines the defined catalytic performance. Therefore, the idea of temporally switchable polymerization is highly attractive. In this case, We will design a series of smart catalysts based on redox-switch. Its reactivity can be modulated by using external stimuli. It distinguishes with the classically modifying steric and electronic properties. In addition, dual-stimuli responsive catalyst will be first proposed based on redox- and lewis acid-response in olefin polymerization catalysis.

一直以来，催化剂毋庸置疑是烯烃聚合的核心。但是近年来，新型催化剂的合成越来越复杂，越来越耗时。一旦选定一种配体，金属催化中心的配位环境就被固定了，表现出单一的催化性能。因此，原位调控聚合受到高度的关注。本研究拟设计一类含对氧化还原进行响应的智能型催化剂。当施加外界刺激后，催化剂的催化性能就会发生变化。这与传统上调节催化剂的位阻与电子效应相区别。另外，我们会首次进行基于氧化还原和路易斯酸的双重响应调控烯烃聚合过程。

一直以来，催化剂毋庸置疑是配位聚合的核心。但是近年来，新型催化剂的合成越来越复杂，越来越耗时。一旦选定一种配体，金属催化中心的配位环境就被固定了，表现出单一的催化性能。因此，原位刺激响应性调控聚合受到高度的关注。本研究拟设计一类刺激响应的智能型催化剂。当施加外界刺激后，催化剂的催化性能就会发生变化。这与传统上调节催化剂的位阻与电子效应相区别。因此在进行本项目实施的过程中，我们探究了刺激响应型催化剂在烯烃聚合及开环聚合中的应用。