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Accessing Multiple Catalytically Active States in Redox-Controlled Olefin Polymerization
ACS Catalysis ( IF 11.3 ) Pub Date : 2017-10-02 00:00:00 , DOI: 10.1021/acscatal.7b02564
Minhui Zhao 1 , Changle Chen 1
Affiliation  

The majority of work in the field of olefin polymerization catalysis has been focused on ligand modifications. In this work, we describe an alternative strategy for the modulation of olefin polymerization and copolymerization processes. The two ferrocenyl units in an α-diimine palladium catalyst can be oxidized in a stepwise fashion. This stepwise redox control can be used to modulate the catalyst properties during the homopolymerization of ethylene and 1-hexene, as well as the copolymerizations of ethylene with norbornene, methyl acrylate, and 5-norbornene-2-yl acetate. Moreover, polymer microstructure and polydispersity can be controlled during these stepwise oxidation processes.

中文翻译:

在氧化还原控制的烯烃聚合中访问多个催化活性态

烯烃聚合催化领域的大部分工作集中在配体改性上。在这项工作中,我们描述了一种用于烯烃聚合和共聚过程调节的替代策略。α-二亚胺钯催化剂中的两个二茂铁基单元可以以逐步的方式被氧化。这种逐步的氧化还原控制可用于在乙烯和1-己烯的均聚以及乙烯与降冰片烯,丙烯酸甲酯和5-降冰片烯-2-基乙酸酯的共聚过程中调节催化剂的性能。此外,可以在这些逐步氧化过程中控制聚合物的微结构和多分散性。
更新日期:2017-10-03
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