Synergistic Effect and Fluorination Effect in Ethylene Polymerization by Nickel Phenoxyiminato Catalysts

作     者：Di Xu Xiang-Xiang Zhao Zhong-Tao Chen Yu-Guo Ma 

作者机构：Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Soft Matter Science and Engineering Key Lab of Polymer Chemistry & Physics of Ministry of Education College of Chemistry Peking University 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2018年第36卷第2期

页      面：244-251页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 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：financially supported by the National Natural Science Foundation of China (No. 51573002) 

主　　题：Nickel phenoxyiminato catalysts Fluorination effect Synergistic effect Bimetallic catalysts 

摘      要：A series of binuclear nickel phenoxyiminato catalysts with different linkers and fluorine substituents were efficiently synthesized. Binuclear nickel catalysts with rigid linkers showed higher catalytic activity and thermal stability in ethylene polymerization and produced polymers with higher molecular weight possibly due to the larger steric hindrance and metal-metal synergistic effect. The introduction of fluorine atoms on the N-terphenyl moity also enhanced polymerization activity and molecular weight of polymer due to the electronic effect of fluorine atoms.