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Controllable Preparation of Branched Polyolefins with Various Microstructural Units via Chain-walking Ethylene and Pentene Polymerizations. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2875-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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Wang Q, Wang W, Qu W, Pang W, Qasim M, Zou C. Ethylene homo and copolymerization by phosphorus‐benzoquinone based homogeneous and heterogeneous nickel catalysts. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Quan Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Wenbing Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Weicheng Qu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Wenmin Pang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Muhammad Qasim
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
| | - Chen Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering University of Science and Technology of China Hefei China
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3
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Lei T, Ma Z, Liu H, Wang X, Li P, Wang F, Wu W, Zhang S, Xu G, Wang F. Preparation of highly branched polyolefins by controlled chain‐walking olefin polymerization. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tong Lei
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Zhanshan Ma
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Hongju Liu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Xiaoyue Wang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Pei Li
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Feifei Wang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Weitai Wu
- State Key Laboratory for Physical Chemistry of Solid surfaces Xiamen University Xiamen China
| | - Shaojie Zhang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Guoyong Xu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
| | - Fuzhou Wang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology Anhui University Hefei China
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4
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Xia J, Kou S, Mu H, Jian Z. Slow-chain-walking polymerization of ethylene and highly chain-straightening polymerization of 1-hexene to access semicrystalline polyolefins. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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A general cocatalyst strategy for performance enhancement in nickel catalyzed ethylene (co)polymerization. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.12.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Klein JP, Gdowski ZM, Register RA. Controlling thermomechanical behavior of semicrystalline hydrogenated polynorbornene through the
cis‐
to
trans
‐cyclopentylene
ratio. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jared P. Klein
- Department of Chemical and Biological Engineering Princeton University Princeton New Jersey USA
| | - Zachary M. Gdowski
- Department of Chemical and Biological Engineering Princeton University Princeton New Jersey USA
| | - Richard A. Register
- Department of Chemical and Biological Engineering Princeton University Princeton New Jersey USA
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7
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Yu F, Li P, Xu M, Xu G, Na Y, Zhang S, Wang F, Tan C. Iminopyridyl ligands bearing polyethylene glycol unit for nickel catalyzed ethylene polymerization. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Xu M, Yu F, Li P, Xu G, Zhang S, Wang F. Enhancing Chain Initiation Efficiency in the Cationic Allyl-Nickel Catalyzed (Co)Polymerization of Ethylene and Methyl Acrylate. Inorg Chem 2020; 59:4475-4482. [DOI: 10.1021/acs.inorgchem.9b03647] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mengli Xu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Fan Yu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Pei Li
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Guoyong Xu
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Shaojie Zhang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
| | - Fuzhou Wang
- Institutes of Physical Science and Information Technology, School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China
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9
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Concerted steric and electronic effects on α-diimine nickel- and palladium-catalyzed ethylene polymerization and copolymerization. Sci Bull (Beijing) 2020; 65:300-307. [PMID: 36659095 DOI: 10.1016/j.scib.2019.11.019] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 01/21/2023]
Abstract
For transition metal-based olefin polymerization catalysts, ligand steric and electronic effects can strongly influence important catalytic properties. However, the simultaneous tuning of both steric and electronic effects has not been explored in most of the previous studies. In this contribution, a strategy to tune the ligand electronic and steric effects in a concerted fashion is reported. In such a system, both dibenzhydryl groups and multiple methoxy/fluoro groups were installed in α-diimine ligands. In addition to strongly influencing ligand electronics, the methoxy/fluoro groups can interact with the dibenzhydryl groups and efficiently increase ligand sterics. In ethylene polymerization, this concurrent tuning of electronic and steric effects can lead to simultaneous enhancement of several parameters (activity, stability, polymer molecular weight, melting point, branching density) for both the nickel and palladium catalysts. The effectiveness of this strategy is highly attractive for future studies in other catalytic systems.
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10
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Takeuchi D. Olefin Polymerization and Copolymerization Catalyzed by Dinuclear Catalysts Having Macrocyclic Ligands. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.1136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daisuke Takeuchi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University
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11
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Kanbayashi N, Okamura TA, Onitsuka K. Living Cyclocopolymerization through Alternating Insertion of Isocyanide and Allene via Controlling the Reactivity of the Propagation Species: Detailed Mechanistic Investigation. J Am Chem Soc 2019; 141:15307-15317. [PMID: 31475819 DOI: 10.1021/jacs.9b07431] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Living cyclocopolymerization through the alternating insertion of an isocyanide and allene into palladium-carbon bond was developed based on the controlling the reactivity of the propagation species using bidentate ligands. We revealed that the rate of the presented cyclocopolymerization was depended on the ligands of Pd-initiator. When the palladium-methyl complexes having appropriate cis-chelating ligand, such as 1,3-bis(diphenylphosphino)propane (dppp), were used as initiator, the cyclocopolymerization of bifunctional aryl isocyanides (1) that contain both isocyano and allenyl moieties polymerized to afford poly(quinolylene-2,3-methylene)s with controlled molecular weight and narrow molecular weight distributions. The resulting polymer was characterized by 1H and 13C NMR analyses, which clearly showed that the terminal moiety of the polymer formed well-defined organopalladium complex as the resting state for the polymerization, which could undergo further polymerization; not only cyclocopolymerization with 1 but also homopolymerization of simple aryl isocyanide. In the analysis of the cyclocopolymerization mechanism, we conclusively demonstrated that the insertion reaction of isocyanide is the rate-determination step in the cyclocopolymerization, which proceeds via a five-coordinate intermediate with a geometrical change. The cis-chelating ligand controls the site interchange reaction, which dominates the reactivity of propagation species.
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Affiliation(s)
- Naoya Kanbayashi
- Department of Macromolecular Science Graduate School of Science , Osaka University , Toyonaka, Osaka 560-0043 , Japan
| | - Taka-Aki Okamura
- Department of Macromolecular Science Graduate School of Science , Osaka University , Toyonaka, Osaka 560-0043 , Japan
| | - Kiyotaka Onitsuka
- Department of Macromolecular Science Graduate School of Science , Osaka University , Toyonaka, Osaka 560-0043 , Japan
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12
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Synthesis of polycyclic polyolefins by a Pd-catalyzed isomerization polymerization of vinylcycloalkanes. Polym J 2019. [DOI: 10.1038/s41428-019-0260-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Wang F, Chen C. A continuing legend: the Brookhart-type α-diimine nickel and palladium catalysts. Polym Chem 2019. [DOI: 10.1039/c9py00226j] [Citation(s) in RCA: 186] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Here we will summarize some of the recent advances in α-diimine ligand developments, as well as some new and challenging monomers that this class of catalysts can address through these ligand improvements.
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Affiliation(s)
- Fuzhou Wang
- Institute of Physical Science and Information Technology
- Anhui University
- Hefei 230601
- Anhui
- China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
- China
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