Vanadium(V) Complexes Containing Tetradentate Amine Trihydroxy Ligands as Catalysts for Copolymerization of Cyclic Olefins

doi:10.1002/pola.23868

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	Vanadium(V) Complexes Containing Tetradentate Amine Trihydroxy Ligands as Catalysts for Copolymerization of Cyclic Olefins
	Wu, Ji-Qian 1,2; Mu, Jing-Shan 1,2; Zhang, Sen-Wang 1,2; Li, Yue-Sheng 1
刊名	JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
	2010-03-01
卷号	48 期号:5 页码:1122-1132
关键词	Catalysts Functional Polymers Homogeneous Catalysis Polydentate Ligands Polymerization Polyolefins Vanadium Ziegler-natta Polymerization
ISSN号	0887-624X
DOI	10.1002/pola.23868
英文摘要	A series of vanadium(V) complexes bearing tetradentate amine trihydroxy ligands [NOOO], which differ in the steric and electronic properties, have been synthesized and characterized. Single crystal X-ray analysis showed that these complexes are five or six coordinated around the vanadium center in the solid state. Their coordination geometries are octahedral or trigonal bipyramidal. In the presence of Et(2)AlCl, these complexes have been investigated as the efficient catalysts for ethylene polymerization and ethylene/norbornene copolymerization at elevated reaction temperature and produced the polymers with unimodal molecular weight distributions (MWDs), indicating the single site behaviors of these catalysts. Both the steric hindrance and electronic effect of the groups on the tetradentate ligands directly influenced catalytic activity and the molecular weights of the resultant (co)polymers. Other reaction parameters that influenced the polymerization behavior, such as reaction temperature, ethylene pressure, and comonomer concentration, are also examined in detail. Furthermore, high catalytic activities of up to 3.30 kg polymer/mmol(v).h were also observed when these complexes were applied to catalyze the copolymerization of ethylene and 5-norbornene-2-methanol, producing the high-molecular-weight copolymers (M(w) = 157-400 kg/mol) with unimodal MWDs (M(w)/M(n) = 2.5-3.0) and high polar comonomer incorporations (up to 12.3 mol %). (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 1122-1132, 2010
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000274942000013
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/69257]
专题	中国科学院化学研究所
通讯作者	Li, Yue-Sheng
作者单位	1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun Branch, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Wu, Ji-Qian,Mu, Jing-Shan,Zhang, Sen-Wang,et al. Vanadium(V) Complexes Containing Tetradentate Amine Trihydroxy Ligands as Catalysts for Copolymerization of Cyclic Olefins[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2010,48(5):1122-1132.
APA	Wu, Ji-Qian,Mu, Jing-Shan,Zhang, Sen-Wang,&Li, Yue-Sheng.(2010).Vanadium(V) Complexes Containing Tetradentate Amine Trihydroxy Ligands as Catalysts for Copolymerization of Cyclic Olefins.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,48(5),1122-1132.
MLA	Wu, Ji-Qian,et al."Vanadium(V) Complexes Containing Tetradentate Amine Trihydroxy Ligands as Catalysts for Copolymerization of Cyclic Olefins".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 48.5(2010):1122-1132.