Wang Yan-Bing, Nan Chenlong, Zhuo Weize, Zou Chen, Jiang Hui, Hao Xin-Qi, Chen Changle, Song Mao-Ping
College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, P. R. China.
CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
Inorg Chem. 2023 Apr 3;62(13):5105-5113. doi: 10.1021/acs.inorgchem.2c04240. Epub 2023 Mar 18.
The introduction of a secondary interaction is an efficient strategy to modulate transition-metal-catalyzed ethylene (co)polymerization. In this contribution, O-donor groups were suspended on amine-imine ligands to synthesize a series of nickel complexes. By adjusting the interaction between the nickel metal center and the O-donor group on the ligands, these nickel complexes exhibited high activities for ethylene polymerization (up to 3.48 × 10 g·mol·h) with high molecular weight up to 5.59 × 10 g·mol and produced good polyethylene elastomers (strain recovery (SR) = 69-81%). In addition, these nickel complexes can catalyze the copolymerization of ethylene with vinyl acetic acid, 6-chloro-1-hexene, 10-undecylenic, 10-undecenoic acid, and 10-undecylenic alcohol to prepare the functionalized polyolefins.
引入二级相互作用是调节过渡金属催化乙烯（共）聚合的有效策略。在本论文中，将氧供体基团连接在胺-亚胺配体上，合成了一系列镍配合物。通过调节镍金属中心与配体上氧供体基团之间的相互作用，这些镍配合物在乙烯聚合反应中表现出高活性（高达3.48×10⁶ g·mol⁻¹·h⁻¹），可得到高分子量高达5.59×10⁵ g·mol⁻¹的聚合物，并生成性能良好的聚乙烯弹性体（应变恢复率（SR）=69-81%）。此外，这些镍配合物能够催化乙烯与乙烯基乙酸、6-氯-1-己烯、10-十一碳烯、10-十一碳烯酸和10-十一碳烯醇的共聚反应，以制备功能化聚烯烃。
