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Gao L, Ren H, Hou Y, Ye L, Meng H, Liu B, Yang M. Synthesis of High-Molecular-Weight Polypropylene Elastomer by Propylene Polymerization Using α-Diimine Nickel Catalysts. Polymers (Basel) 2024; 16:2376. [PMID: 39204595 PMCID: PMC11359258 DOI: 10.3390/polym16162376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 07/22/2024] [Accepted: 07/25/2024] [Indexed: 09/04/2024] Open
Abstract
The α-diimine late transition metal catalyst represents a new strategy for the synthesis of atactic polypropylene elastomer. Taking into account the properties of the material, enhancing the molecular weight of polypropylene at an elevated temperature through modifying the catalyst structure, and further increasing the activity of α-diimine catalyst for propylene polymerization, are urgent problems to be solved. In this work, two α-diimine nickel(II) catalysts with multiple hydroxymethyl phenyl substituents were synthesized and used for propylene homopolymerization. The maximum catalytic activity was 5.40 × 105 gPP/molNi·h, and the activity was still maintained above 105 gPP/molNi·h at 50 °C. The large steric hindrance of catalysts inhibited the chain-walking and chain-transfer reactions, resulting in polypropylene with high molecular weights (407~1101 kg/mol) and low 1,3-enchainment content (3.57~16.96%) in toluene. The low tensile strength (0.3~1.0 MPa), high elongation at break (218~403%) and strain recovery properties (S.R. ~50%, 10 tension cycles) of the resulting polypropylenes, as well as the visible light transmittance of approximately 90%, indicate the characteristics of the transparent elastomer.
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Affiliation(s)
- Lujie Gao
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Hegang Ren
- School of Material Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Yanhui Hou
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300160, China
| | - Linlin Ye
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Hao Meng
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300160, China
| | - Binyuan Liu
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Min Yang
- Hebei Key Laboratory of Functional Polymers, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300401, China
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2
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Shi CY, Qin WY, Qu DH. Semi-crystalline polymers with supramolecular synergistic interactions: from mechanical toughening to dynamic smart materials. Chem Sci 2024; 15:8295-8310. [PMID: 38846397 PMCID: PMC11151828 DOI: 10.1039/d4sc02089h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 05/10/2024] [Indexed: 06/09/2024] Open
Abstract
Semi-crystalline polymers (SCPs) with anisotropic amorphous and crystalline domains as the basic skeleton are ubiquitous from natural products to synthetic polymers. The combination of chemically incompatible hard and soft phases contributes to unique thermal and mechanical properties. The further introduction of supramolecular interactions as noncovalently interacting crystal phases and soft dynamic crosslinking sites can synergize with covalent polymer chains, thereby enabling effective energy dissipation and dynamic rearrangement in hierarchical superstructures. Therefore, this review will focus on the design principles of SCPs by discussing supramolecular construction strategies and state-of-the-art functional applications from mechanical toughening to sophisticated functions such as dynamic adaptivity, shape memory, ion transport, etc. Current challenges and further opportunities are discussed to provide an overview of possible future directions and potential material applications.
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Affiliation(s)
- Chen-Yu Shi
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wen-Yu Qin
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
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3
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Dai J, Dai S. Impact of o-aryl halogen effects on ethylene polymerization: steric vs. electronic effects. Dalton Trans 2024; 53:9286-9293. [PMID: 38712871 DOI: 10.1039/d4dt00850b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Ligand steric hindrance and electronic effects play a crucial role in late-transition metal-catalyzed olefin polymerization. In this research, a series of o-aryl halogenated α-diimine ligands bearing bulky dibenzhydryl substituents, along with their corresponding nickel catalysts, have been synthesized and thoroughly characterized. The nickel catalysts demonstrated very high activity in ethylene polymerization, achieving a high rate of up to 107 g mol-1 h-1. The produced polyethylenes displayed a broad spectrum of molecular weights (12.2-871.7 kg mol-1) but maintained consistent branching densities (50-82/1000 C) when polymerized at a fixed temperature with different nickel catalysts. Notably, the polymerization temperature has a significant influence on both the molecular weight and branching density of the resulting polyethylene. Higher temperatures led to the formation of polyethylenes with lower molecular weights and increased branching densities. Interestingly, the o-aryl halogens significantly impact the molecular weight of the polyethylene. The size of the halogen substituents primarily determines the molecular weight of the polyethylene. However, in terms of branching density, the steric and electronic effects of these substituents appear to counteract each other. In addition, the branched high molecular weight polyethylenes from the bromine and chlorine substituted nickel catalysts are excellent polyethylene thermoplastic elastomers with high strain at break values (688-2478%) and high strain recovery values (42-62%).
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Affiliation(s)
- Jianjian Dai
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China.
| | - Shengyu Dai
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China.
- Anhui Laboratory of Molecule-Based Materials, Key Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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4
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Wang C, Wang D, Xu T, Zhang Q, Fu Z. Effect of N-Aryl Para-Benzhydryl Substituent on the Thermal Stability of α-Diimine Nickel Catalyst. Macromol Rapid Commun 2023; 44:e2300221. [PMID: 37293788 DOI: 10.1002/marc.202300221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/18/2023] [Indexed: 06/10/2023]
Abstract
The thermal stability of α-diimine nickel catalysts has always been the focus of research. The introduction of large groups in the backbone or N-aryl ortho-position is a relatively mature solution. However, the question of whether the N-aryl bond rotation is a factor affecting the thermal stability of nickel catalysts is still open. In this work, the effects of N-aryl para-benzhydryl substitutes on catalyst thermal stability are investigated, and the results of ethylene polymerization and the factors affecting thermal stability (steric effect, electronic effect, five-membered coordination ring stability, N-aryl bond rotation, etc.) are systematically analyzed. It is believed that the introduction of large steric hindrance groups at the N-aryl para-position hinders the rotation of the N-aryl bond. This obstacle effect is beneficial to improving catalyst thermal stability, and the obstacle capacity is weakened with the increase of ortho-substituent size.
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Affiliation(s)
- Cheng Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, P. R. China
- ZJU-Hangzhou Xinglu High-end Polyolefin Research & Development Center, Hangzhou, 310058, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Hangzhou, 310058, P. R. China
| | - Dan Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, P. R. China
| | - Tao Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, P. R. China
- ZJU-Hangzhou Xinglu High-end Polyolefin Research & Development Center, Hangzhou, 310058, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Hangzhou, 310058, P. R. China
- Hangzhou Xinglu Technologies Co. Ltd., Hangzhou, 310012, P. R. China
| | - Qisheng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, P. R. China
| | - Zhisheng Fu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, P. R. China
- ZJU-Hangzhou Xinglu High-end Polyolefin Research & Development Center, Hangzhou, 310058, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Hangzhou, 310058, P. R. China
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5
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Nguyen D, Wang S, Grabow LC, Harth E. Deciphering the Olefin Isomerization-Polymerization Paradox of Palladium(II) Diimine Catalysts: Discovery of Simultaneous and Independent Pathways of Olefin Isomerization and Living Polymerization. J Am Chem Soc 2023; 145:9755-9770. [PMID: 37071817 DOI: 10.1021/jacs.3c01513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
This work elucidates a long-standing unexplained paradox commonly observed within the polymerization of α-olefin using palladium (Pd)(II)-diimine catalysts, in which isomerization and living polymerization of α-olefins are both observed. With a classical mechanistic understanding of these complexes, this behavior is often dismissed and interpreted as experimental error. Herein, we present a comprehensive mechanistic investigation into this phenomenon that supports the existence of a novel mechanistic pathway for Pd(II)-diimine complexes. Part one of the mechanistic study lays the foundation of the proposed mechanism, in which neutral Pd(II)-diimine complexes were found to exhibit a moderate to good catalytic activity for olefin isomerization of α-olefins despite the established notion that catalyst activation is required. Extensive experimental and computational studies reveal the possibility of a partial dissociation of the diimine ligand, which frees up one coordination site and enables coordination-insertion. This finding is significant as the coexistence of two reactive coordination sites at the palladium center becomes a valid proposal for the activated cationic Pd(II)-diimine complexes. In part two, we examined and validated the simultaneously observed α-olefin isomerization and living polymerization using the cationic Pd(II)-diimine catalyst, which supports the presence of two independent reaction pathways of isomerization and polymerization, respectively. Moreover, the addition of a strong Lewis acid, such as AlCl3, accelerates the ligand dissociation and the consequential isomerization as it weakens the palladium-nitrogen bond through competitive binding. In part three, Lewis acid-triggered olefin isomerization-polymerization is employed to prepare living olefinic block copolymers and further synthesize novel polyolefin-polar block copolymers with unique architectures, distinct levels of branching, crystallinity, and polar functionality in a one-pot manner.
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Affiliation(s)
- Dung Nguyen
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3589 Cullen Boulevard, Houston, Texas 77204, United States
| | - Shengguang Wang
- Williams A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, 4226 Martin Luther King Blvd, Houston, Texas 77204, United States
- Center for Programmable Energy Catalysis (CPEC), University of Minnesota, 421 Washington Ave., SE, Minneapolis, Minnesota 55455, United States
| | - Lars C Grabow
- Williams A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, 4226 Martin Luther King Blvd, Houston, Texas 77204, United States
- Center for Programmable Energy Catalysis (CPEC), University of Minnesota, 421 Washington Ave., SE, Minneapolis, Minnesota 55455, United States
| | - Eva Harth
- Department of Chemistry, Center of Excellence in Polymer Chemistry (CEPC), University of Houston, 3589 Cullen Boulevard, Houston, Texas 77204, United States
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6
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A comprehensive picture on chain walking olefin polymerization. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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7
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Zhang Y, Zhang Y, Hu X, Wang C, Jian Z. Advances on Controlled Chain Walking and Suppression of Chain Transfer in Catalytic Olefin Polymerization. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04272] [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)
- Yixin Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yuxing Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Xiaoqiang Hu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Chaoqun Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
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8
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Ji M, Si G, Pan Y, Tan C, Chen M. Polymeric α-diimine palladium catalysts for olefin (co)polymerization. J Catal 2022. [DOI: 10.1016/j.jcat.2022.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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9
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Eagan JM, Padilla-Vélez O, O’Connor KS, MacMillan SN, LaPointe AM, Coates GW. Chain-Straightening Polymerization of Olefins to Form Polar Functionalized Semicrystalline Polyethylene. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James M. Eagan
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Omar Padilla-Vélez
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Kyle S. O’Connor
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Anne M. LaPointe
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Geoffrey W. Coates
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
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10
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Wang C, Wang D, Fu Z, Qin Y, Zhang Q, Fan Z. Combining 1,2-diketopyracene with bulky benzhydryl-substituted anilines to obtain highly active α-diimine nickel catalysts at elevated temperature. J Catal 2022. [DOI: 10.1016/j.jcat.2022.06.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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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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12
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Selective branch formation in ethylene polymerization to access precise ethylene-propylene copolymers. Nat Commun 2022; 13:725. [PMID: 35132061 PMCID: PMC8821618 DOI: 10.1038/s41467-022-28282-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/12/2022] [Indexed: 11/23/2022] Open
Abstract
Polyolefins with branches produced by ethylene alone via chain walking are highly desired in industry. Selective branch formation from uncontrolled chain walking is a long-standing challenge to generate exclusively branched polyolefins, however. Here we report such desirable microstructures in ethylene polymerization by using sterically constrained α-diimine nickel(II)/palladium(II) catalysts at 30 °C–90 °C that fall into industrial conditions. Branched polyethylenes with exclusive branch pattern of methyl branches (99%) and notably selective branch distribution of 1,4-Me2 unit (86%) can be generated. The ultrahigh degree of branching (>200 Me/1000 C) enables the well-defined product to mimic ethylene-propylene copolymers. More interestingly, branch distribution is predictable and computable by using a simple statistical model of p(1-p)n (p: the probability of branch formation). Mechanistic insights into the branch formation including branch pattern and branch distribution by an in-depth density functional theory (DFT) calculation are elucidated. Selective branch formation from uncontrolled chain walking is a longstanding challenge to generate exclusively branched polyolefins. Here the authors report such desirable microstructures in ethylene polymerization enabled by a nickel catalyst at 30 °C–90 °C that fall into industrial conditions and mimic ethylene-propylene copolymers.
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13
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Chen A, Liao D, Chen C. Promoting Ethylene (co)Polymerization in Aliphatic Hydrocarbon Solvents Using
tert
‐Butyl
Substituted Nickel Catalysts. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100642] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ao Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 China
| | - Daohong Liao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 China
| | - Changle Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 China
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14
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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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15
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Chi M, Chen A, Pang W, Tan C, Chen C. Positional Electronic Effects in
Iminopyridine‐
N
‐oxide Nickel Catalyzed Ethylene Polymerization
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000712] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mingjun Chi
- CAS 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 Anhui 230026 China
| | - Ao Chen
- CAS 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 Anhui 230026 China
| | - Wenmin Pang
- CAS 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 Anhui 230026 China
| | - Chen Tan
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University Hefei Anhui 230026 China
| | - Changle Chen
- CAS 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 Anhui 230026 China
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16
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Takeuchi D. Synthesis of Polymers with Regulated Repeating Structures by Utilizing Chain Walking Strategy. CHEM LETT 2021. [DOI: 10.1246/cl.200793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daisuke Takeuchi
- Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
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17
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Janeta M, Heidlas JX, Daugulis O, Brookhart M. 2,4,6‐Triphenylpyridinium: A Bulky, Highly Electron‐Withdrawing Substituent That Enhances Properties of Nickel(II) Ethylene Polymerization Catalysts. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013854] [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)
- Mateusz Janeta
- Department of Chemistry University of Houston Houston TX 77204-5003 USA
- Faculty of Chemistry University of Wrocław F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Julius X. Heidlas
- Department of Chemistry University of Houston Houston TX 77204-5003 USA
| | - Olafs Daugulis
- Department of Chemistry University of Houston Houston TX 77204-5003 USA
| | - Maurice Brookhart
- Department of Chemistry University of Houston Houston TX 77204-5003 USA
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18
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Janeta M, Heidlas JX, Daugulis O, Brookhart M. 2,4,6-Triphenylpyridinium: A Bulky, Highly Electron-Withdrawing Substituent That Enhances Properties of Nickel(II) Ethylene Polymerization Catalysts. Angew Chem Int Ed Engl 2021; 60:4566-4569. [PMID: 33230900 DOI: 10.1002/anie.202013854] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Indexed: 11/06/2022]
Abstract
The reactivity of NiII and PdII olefin polymerization catalysts can be enhanced by introduction of electron-withdrawing substituents on the supporting ligands rendering the metal centers more electrophilic. Reported here is a comparison of ethylene polymerization activity of a classical salicyliminato nickel catalyst substituted with the powerful electron-withdrawing 2,4,6-triphenylpyridinium (trippy) group to the -CF3 analogue. The trippy substituent is substantially more electron-withdrawing (σmeta =0.63) than the trifluoromethyl group (σmeta =0.43) which results in a ca. 8-fold increase in catalytic turnover frequency. An additional advantage of trippy is the high steric bulk relative to the trifluoromethyl group. This feature results in a four-fold increase in polymer molecular weight owing to enhanced retardation of chain transfer. A significant increase in catalyst lifetime is observed as well.
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Affiliation(s)
- Mateusz Janeta
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA.,Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Julius X Heidlas
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
| | - Maurice Brookhart
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
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19
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Tran QH, Wang X, Brookhart M, Daugulis O. Cationic α-Diimine Nickel and Palladium Complexes Incorporating Phenanthrene Substituents: Highly Active Ethylene Polymerization Catalysts and Mechanistic Studies of syn/anti Isomerization. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00696] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Quan H. Tran
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Xiqu Wang
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Maurice Brookhart
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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20
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Styrene-containing Phosphine-sulfonate Ligands for Nickel- and Palladium-catalyzed Ethylene Polymerization. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-021-2509-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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21
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Li P, Li X, Behzadi S, Xu M, Yu F, Xu G, Wang F. Living Chain-Walking (Co)Polymerization of Propylene and 1-Decene by Nickel α-Diimine Catalysts. Polymers (Basel) 2020; 12:E1988. [PMID: 32878280 PMCID: PMC7564000 DOI: 10.3390/polym12091988] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/20/2020] [Accepted: 08/24/2020] [Indexed: 12/13/2022] Open
Abstract
Homo- and copolymers of propylene and 1-decene were synthesized by controlled chain-walking (co)polymerization using phenyl substituted α-diimine nickel complexes activated with modified methylaluminoxane (MMAO). This catalytic system was found to polymerize propylene in a living fashion to furnish high molecular weight ethylene-propylene (EP) copolymers. The copolymerizations proceeded to give high molecular weight P/1-decene copolymers with narrow molecular weight distribution (Mw/Mn ≈ 1.2), which indicated a living nature of copolymerization at room temperature. The random copolymerization results indicated the possibility of precise branched structure control, depending on the polymerization temperature and time.
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Affiliation(s)
- Pei Li
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; (P.L.); (X.L.); (M.X.); (F.Y.)
| | - Xiaotian Li
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; (P.L.); (X.L.); (M.X.); (F.Y.)
| | - Shabnam Behzadi
- CAS 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;
| | - Mengli Xu
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; (P.L.); (X.L.); (M.X.); (F.Y.)
| | - Fan Yu
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; (P.L.); (X.L.); (M.X.); (F.Y.)
| | - Guoyong Xu
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; (P.L.); (X.L.); (M.X.); (F.Y.)
| | - Fuzhou Wang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; (P.L.); (X.L.); (M.X.); (F.Y.)
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22
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Jarrett-Wilkins CN, Pollit AA, Seferos DS. Polymerization Catalysts Take a Walk on the Wild Side. TRENDS IN CHEMISTRY 2020. [DOI: 10.1016/j.trechm.2020.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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23
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Tran QH, Brookhart M, Daugulis O. New Neutral Nickel and Palladium Sandwich Catalysts: Synthesis of Ultra-High Molecular Weight Polyethylene (UHMWPE) via Highly Controlled Polymerization and Mechanistic Studies of Chain Propagation. J Am Chem Soc 2020; 142:7198-7206. [DOI: 10.1021/jacs.0c02045] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Quan H. Tran
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Maurice Brookhart
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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24
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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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25
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Wu Q, Wang W, Xu G, Pang W, Li Y, Tan C, Wang F. Bulky iminophosphine‐based nickel and palladium catalysts bearing 2,6‐dibenzhydryl groups for ethylene oligo‐/polymerization. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5428] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Qitong Wu
- School of Chemistry and Chemical EngineeringHefei University of Technology Hefei 230009 China
| | - Wenbing Wang
- School of Chemistry and Chemical EngineeringHefei University of Technology Hefei 230009 China
| | - Guoyong Xu
- Institutes of Physical Science and Information TechnologyAnhui University Hefei 230601 , Anhui China
| | - Wenmin Pang
- Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 China
| | - Yougui Li
- School of Chemistry and Chemical EngineeringHefei University of Technology Hefei 230009 China
| | - Chen Tan
- Institutes of Physical Science and Information TechnologyAnhui University Hefei 230601 , Anhui China
| | - Fuzhou Wang
- Institutes of Physical Science and Information TechnologyAnhui University Hefei 230601 , Anhui China
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26
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Behzadi S, Chi M, Pang W, Liang T, Tan C. Camphor-based phosphine-carbonyl ligands for Ni catalyzed ethylene oligomerization. NEW J CHEM 2020. [DOI: 10.1039/c9nj05408a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ni and Pd complexes of camphor-based phosphine-carbonyl ligands containing biaryl moiety are designed and synthesized. The Ni complexes can catalyze ethylene oligomerization and generate waxy higher olefins as well as oily lower olefins.
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Affiliation(s)
- Shabnam Behzadi
- CAS Key Laboratory of Soft Matter Chemistry
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
| | - Mingjun Chi
- CAS Key Laboratory of Soft Matter Chemistry
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
| | - Wenmin Pang
- CAS Key Laboratory of Soft Matter Chemistry
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
| | - Tao Liang
- CAS Key Laboratory of Soft Matter Chemistry
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
| | - Chen Tan
- Institutes of Physical Science and Information Technology
- Anhui University
- Hefei
- China
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27
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Hu X, Wang C, Jian Z. Comprehensive studies of the ligand electronic effect on unsymmetrical α-diimine nickel(ii) promoted ethylene (co)polymerizations. Polym Chem 2020. [DOI: 10.1039/d0py00536c] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The ligand electronic effects on the horizontal axis and vertical axis are systematically disclosed in unsymmetrical α-diimine Ni(ii)-promoted ethylene polymerization and copolymerization reactions.
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Affiliation(s)
- Xiaoqiang Hu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Chaoqun Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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28
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29
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Favero C, Closs MB, Galland GB, Stieler R, Rossetto E, Bernardo-Gusmão K. A binary nickel diimine-MCM-41 supported catalyst and its application in ethylene polymerization. J Catal 2019. [DOI: 10.1016/j.jcat.2019.07.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Janssen‐Müller D, Sahoo B, Sun S, Martin R. Tackling Remote
sp
3
C−H Functionalization via Ni‐Catalyzed “chain‐walking” Reactions. Isr J Chem 2019. [DOI: 10.1002/ijch.201900072] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Daniel Janssen‐Müller
- Institute of Chemical Research of Catalonia (ICIQ) Avinguda dels Països Catalans, 16 43007 Tarragona Spain
| | - Basudev Sahoo
- Institute of Chemical Research of Catalonia (ICIQ) Avinguda dels Països Catalans, 16 43007 Tarragona Spain
| | - Shang‐Zheng Sun
- Institute of Chemical Research of Catalonia (ICIQ) Avinguda dels Països Catalans, 16 43007 Tarragona Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ) Avinguda dels Països Catalans, 16 43007 Tarragona Spain
- ICREAPasseig Lluïs Companys, 23 08010 Barcelona Spain
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31
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Worch JC, Prydderch H, Jimaja S, Bexis P, Becker ML, Dove AP. Stereochemical enhancement of polymer properties. Nat Rev Chem 2019. [DOI: 10.1038/s41570-019-0117-z] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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32
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Farrell WS, Orski SV, Kotula AP, Baugh III DW, Snyder CR, Beers KL. Precision, Tunable Deuterated Polyethylene via Polyhomologation. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wesley S. Farrell
- Materials Science & Engineering Division, National Institute of Standards & Technology, Gaithersburg, Maryland 20899, United States
| | - Sara V. Orski
- Materials Science & Engineering Division, National Institute of Standards & Technology, Gaithersburg, Maryland 20899, United States
| | - Anthony P. Kotula
- Materials Science & Engineering Division, National Institute of Standards & Technology, Gaithersburg, Maryland 20899, United States
| | - Daniel W. Baugh III
- The Dow Chemical Company, 230 Abner Jackson Parkway, Lake Jackson, Texas 77566, United States
| | - Chad R. Snyder
- Materials Science & Engineering Division, National Institute of Standards & Technology, Gaithersburg, Maryland 20899, United States
| | - Kathryn L. Beers
- Materials Science & Engineering Division, National Institute of Standards & Technology, Gaithersburg, Maryland 20899, United States
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33
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Affiliation(s)
- Min Li
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China
| | - Pan Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Changle Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, 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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34
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Peng D, Pang W, Xu G, Tan C, Wang F. Facile synthesis of sterically demanding SHOP-type nickel catalysts for ethylene polymerization. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dan Peng
- Department of Polymer Science and Engineering; University of Science and Technology of China; Hefei 230026 China
| | - Wenmin Pang
- Department of Polymer Science and Engineering; University of Science and Technology of China; Hefei 230026 China
| | - Guoyong Xu
- Institutes of Physical Science and Information Technology; Anhui University; Hefei 230601 Anhui China
| | - Chen Tan
- Department of Polymer Science and Engineering; University of Science and Technology of China; Hefei 230026 China
| | - Fuzhou Wang
- Institutes of Physical Science and Information Technology; Anhui University; Hefei 230601 Anhui China
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35
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Liao Y, Zhang Y, Cui L, Mu H, Jian Z. Pentiptycenyl Substituents in Insertion Polymerization with α-Diimine Nickel and Palladium Species. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00106] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yudan Liao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yixin Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Lei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Hongliang Mu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
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36
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Skatova AA, Bazyakina NL, Fedushkin IL, Piskunov AV, Druzhkov NO, Cherkasov AV. Mononuclear gallium complexes with the redox-active dmp-bian ligand (dmp-bian is 1,2-bis[(2,6-dimethylphenyl)imino]acenaphthene): synthesis and reactions with alkynes. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2383-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Leone G, Canetti M, Pierro I, Zanchin G, De Rosa C, Ricci G, Bertini F. (Micro)structure, thermal behavior and mechanical properties of ethylene–propylene–1-octadecene terpolymers from chain-walking polymerization of 1-octadecene. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Regioselective Polymerizations of α-Olefins with an α-Diamine Nickel Catalyst. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2227-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Cationic para-benzhydryl substituted α-diimine nickel catalyzed ethylene and 1-decene polymerizations via controllable chain-walking. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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40
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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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41
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Ma X, Hu X, Zhang Y, Mu H, Cui L, Jian Z. Preparation and in situ chain-end-functionalization of branched ethylene oligomers by monosubstituted α-diimine nickel catalysts. Polym Chem 2019. [DOI: 10.1039/c9py00433e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chain-end-functionalization of (highly) branched ethylene oligomers was achieved in situ with the most/least bulky α-diimine nickel catalysts for the first time.
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Affiliation(s)
- Xin Ma
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Xiaoqiang Hu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Yixin Zhang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Hongliang Mu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Lei Cui
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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42
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Rong C, Li W, Tan C. Monodentate aminophosphine nickel(II)- and palladium(II)-catalyzed ethylene oligomerization and norbornene polymerization. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4631] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Chunyong Rong
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Pertrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Weimin Li
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Pertrochemical Engineering; Changzhou University; Changzhou 213164 China
| | - Chen Tan
- Department of Polymer Science and Engineering; University of Science and Technology of China; Hefei 230026 China
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43
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Finely tuned nickel complexes as highly active catalysts affording branched polyethylene of high molecular weight: 1-(2,6-Dibenzhydryl-4- methoxyphenylimino)-2-(arylimino)acenaphthylenenickel halides. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Si G, Na Y, Chen C. Ethylene (co)Oligomerization by Phosphine‐Pyridine Based Palladium and Nickel Catalysts. ChemCatChem 2018. [DOI: 10.1002/cctc.201800957] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Guifu Si
- Institute of Physical Science and Information Technology Anhui University Hefei 230601 P.R. China
| | - Yinna Na
- Key Laboratory of Soft Matter Chemistry Chinese Academy of Sciences Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P.R. China
| | - Changle Chen
- Key Laboratory of Soft Matter Chemistry Chinese Academy of Sciences Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P.R. China
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45
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Fang J, Sui X, Li Y, Chen C. Synthesis of polyolefin elastomers from unsymmetrical α-diimine nickel catalyzed olefin polymerization. Polym Chem 2018. [DOI: 10.1039/c8py00725j] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Due to a unique chain walking process, α-diimine nickel catalysts produce variously branched polyolefins using only ethylene as the feedstock.
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Affiliation(s)
- Jun Fang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
| | - Xuelin Sui
- Key Laboratory of Soft Matter Chemistry
- Chinese Academy of Sciences
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
| | - Yougui Li
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
| | - Changle Chen
- Key Laboratory of Soft Matter Chemistry
- Chinese Academy of Sciences
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
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46
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Khoshsefat M, Dechal A, Ahmadjo S, Mortazavi SMM, Zohuri GH, Soares JBP. Synthesis of poly(α-olefins) containing rare short-chain branches by dinuclear Ni-based catalysts. NEW J CHEM 2018. [DOI: 10.1039/c8nj04481c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chain walking mechanism with regard to dinuclear Ni-based catalyst stereoisomers in the polymerization of α-olefins: the effects of bridge, backbone and ortho-substituents.
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Affiliation(s)
- M. Khoshsefat
- Department of Catalyst
- Iran Polymer and Petrochemical Institute (IPPI)
- Tehran
- Iran
- Department of Chemical and Materials Engineering
| | - A. Dechal
- Department of Catalyst
- Iran Polymer and Petrochemical Institute (IPPI)
- Tehran
- Iran
| | - S. Ahmadjo
- Department of Catalyst
- Iran Polymer and Petrochemical Institute (IPPI)
- Tehran
- Iran
| | - S. M. M. Mortazavi
- Department of Catalyst
- Iran Polymer and Petrochemical Institute (IPPI)
- Tehran
- Iran
| | - G. H. Zohuri
- Department of Chemistry
- Faculty of Science
- Ferdowsi University of Mashhad
- Mashhad
- Iran
| | - J. B. P. Soares
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
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