Styrene-containing Phosphine-sulfonate Ligands for Nickel-and Palladium-catalyzed Ethylene Polymerization  

作　　者：Shabnam Behzadi Chen Zou Bang-Pei Yang Chen Tan Chang-Le Chen 

机构地区：[1]Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry,Hefei National Laboratory for Physical Sciences at the Microscale,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China [2]Institutes of Physical Science and Information Technology,Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education,Anhui University,Hefei230026,China

出　　处：《Chinese Journal of Polymer Science》2021年第4期447-454,I0006,共9页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21690071,21871242,U19B6001,U1904212);K.C.Wong Education Foundation.

摘　　要：A series of phosphine-sulfonate ligands bearing 2-,3-and 4-vinylphenyl on the phosphorus atom were designed,synthesized,characterized and investigated in Ni-and Pd-catalyzed ethylene polymerization.The structure of the phosphine-sulfonate Pd complex bearing 2-vinylphenyl on the phosphorus atom showed 2,1-insertion for the 2-vinyl group.The phosphine-sulfonate Ni complex bearing 2-vinylphenyl resulted in significantly increased thermal stability and polyethylene molecular weights(Mn=3.69×10^(4)g·mol^(-1) at 80℃)versus the counterparts bearing 3-/4-vinyl groups as well as previously reported phosphine-sulfonate Ni complexes bearing bulky biaryl substituents.

关 键 词：Phosphine-sulfonate Ethylene polymerization Steric effect Palladium NICKEL 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TQ426