1
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Zheng H, Pei L, Deng H, Gao H, Gao H. Electronic effects of amine-imine nickel and palladium catalysts on ethylene (co)polymerization. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2022.111773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Liao YD, Cai Q, Dai SY. Synthesis of High Molecular Weight Polyethylene and E-MA Copolymers Using Iminopyridine Ni(II) and Pd(II) Complexes Containing a Flexible Backbone and Rigid Axial Substituents. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2847-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Late Transition Metal Catalysts with Chelating Amines for Olefin Polymerization. Catalysts 2022. [DOI: 10.3390/catal12090936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Polyolefins are the most consumed polymeric materials extensively used in our daily life and are usually generated by coordination polymerization in the polyolefin industry. Olefin polymerization catalysts containing transition metal–organic compound combinations are undoubtedly crucial for the development of the polyolefin industry. The nitrogen donor atom has attracted considerable interest and is widely used in combination with the transition metal for the fine-tuning of the chemical environment around the metal center. In addition to widely reported olefin polymerization catalysts with imine and amide donors (sp2 hybrid N), late transition metal catalysts with chelating amine donors (sp3 hybrid N) for olefin polymerization have never been reviewed. In this review paper, we focus on late transition metal (Ni, Pd, Fe, and Co) catalysts with chelating amines for olefin polymerization. A variety of late transition metal catalysts bearing different neutral amine donors are surveyed for olefin polymerization, including amine–imine, amine–pyridine, α-diamine, and [N, N, N] tridentate ligands with amine donors. The relationship between catalyst structure and catalytic performance is also encompassed. This review aims to promote the design of late transition metal catalysts with unique chelating amine donors for the development of high-performance polyolefin materials.
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4
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Ding B, Chang G, Yan Z, Dai S. Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers. Front Chem 2022; 10:961426. [PMID: 35991594 PMCID: PMC9386154 DOI: 10.3389/fchem.2022.961426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Hyperbranched ethylene oligomers and polar functionalized co-oligomers synthesized via ethylene chain walking (co) oligomerization is a very attractive strategy. In this study, a series of dibenzhydryl iminopyridyl ligands with benzocycloalkyl and naphthyl moieties and the corresponding Ni(II) and Pd(II) complexes were synthesized and characterized. The Ni(II) complexes were highly effective in ethylene oligomerization and ethylene oligomers with hyperbranched microstructures were generated from this system. The corresponding Pd(II) complexes showed moderate oligomerization activities in ethylene oligomerization and hyperbranched ethylene oligomers were also yielded from the system. More significantly, the Pd(II) complexes can also effectively promote the co-oligomerization of ethylene with methyl acrylate (MA) to obtain hyperbranched polar functionalized ethylene-MA co-oligomers. The reaction temperature, catalyst ligand structure and metal type all have significant effects on ethylene (co) oligomerization with respect to catalytic activity, molecular weight and topology of the oligomers.
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Affiliation(s)
- Beihang Ding
- Institute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
| | - Guanru Chang
- School of Chemistry and Chemical Engineering, Key Laboratory of Inorganic Functional Material, Huangshan University, Huangshan, China
| | - Zhengpeng Yan
- Institute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
| | - Shengyu Dai
- Institute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
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5
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Ethylene (Co)oligomerization in Alkane Solvents Facilitated by Rigid-Flexible Double-Layer Steric Strategy. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Xu M, Liu Y, Pang W, Pan Y, Chen M, Zou C, Tan C. Cocatalyst effects in α-diimine nickel catalyzed ethylene polymerization. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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7
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Chen J, Yan Z, Li Z, Dai S. Direct Synthesis of Chain-End Toluene Functionalized Hyperbranched Ethylene Oligomers. Polymers (Basel) 2022; 14:3049. [PMID: 35956564 PMCID: PMC9370379 DOI: 10.3390/polym14153049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
Chain-end functionalized polymers play an important role in the field of building complex macromolecular structures. In this study, we have synthesized and characterized four dibenzhydryl iminopyridine Ni(II) complexes bearing remote flexible substituents (Et and n-Bu) to provide hyperbranched ethylene oligomers in ethylene oligomerization with moderate to good activities. Most notably, toluene-end-functionalized hyperbranched ethylene oligomers were obtained under elevated temperature conditions and validated by NMR. The tandem catalysis of ethylene oligomerization and the subsequent Friedel-Crafts addition of the resulting unsaturated products to toluene molecules was proposed as the cause of the observed phenomenon.
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Affiliation(s)
- Jianhai Chen
- Analysis and Testing Center, NERC Biomass of Changzhou University, Changzhou University, Changzhou 213164, China;
| | - Zhengpeng Yan
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China;
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, China
| | - Zhongyuan Li
- 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;
| | - Shengyu Dai
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China;
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, China
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8
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Ge Y, Lu Z, Dai S. Flexible Axial Shielding Strategy for the Synthesis of High-Molecular-Weight Polyethylene and Polar Functionalized Polyethylene with Pyridine-Imine Ni(II) and Pd(II) Complexes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- You Ge
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Zhou Lu
- 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 230601, China
| | - Shengyu Dai
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
- 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 230601, China
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9
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Ge Y, Cai Q, Wang Y, Gao J, Chi Y, Dai S. Synthesis of High-Molecular-Weight Branched Polyethylene Using a Hybrid "Sandwich" Pyridine-Imine Ni(II) Catalyst. Front Chem 2022; 10:886888. [PMID: 35601545 PMCID: PMC9114440 DOI: 10.3389/fchem.2022.886888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Most pyridine-imine Ni(II) and Pd(II) catalysts tend to yield low-molecular-weight polyethylene and ethylene-based copolymers in olefin insertion polymerization, as the unilateral axial steric structure of such complexes often cannot provide effective shielding of the metal center. In this study, we synthesized a series of hybrid "semi-sandwich" and "sandwich" type pyridine-imine Ni(II) complexes by incorporating diarylmethyl or dibenzosuberyl groups onto 8-aryl-naphthyl motif. The as-prepared Ni(II) complexes afforded highly branched polyethylene with high molecular weights (level of 105 g/mol), and moderate activities (level of 105 g/(molh)) in ethylene polymerization. Most interestingly, compared to "semi-sandwich" Ni(II) complexes bearing (2-diarylmethyl-8-aryl)naphthyl units, the "full-sandwich" counterpart containing (2-dibenzosuberyl-8-aryl)naphthyl motif was able to produce higher-molecular-weight polyethylene with higher branching density. In addition, the effect of remote non-conjugated electronic substituents in diarylmethyl groups of the Ni(II) system was also observed in ethylene polymerization.
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Affiliation(s)
- You Ge
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
| | - Qi Cai
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
| | - Yuyin Wang
- Key Laboratory of Advanced Structural Materials of Ministry of Education, College of Material Science and Engineering, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, China
| | - Jiangang Gao
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
| | - Yue Chi
- Key Laboratory of Advanced Structural Materials of Ministry of Education, College of Material Science and Engineering, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, China
| | - Shengyu Dai
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, China
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, China
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10
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Xu JX, Kuai CS, Wu XF. Cobalt-Catalyzed Four-Component Carbonylation of Methylarenes with Ethylene and Alcohols. J Org Chem 2022; 87:6371-6377. [PMID: 35468297 DOI: 10.1021/acs.joc.2c00008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Direct conversion of raw materials to fine chemicals is greatly economically influential. We developed a non-expensive cobalt-catalyzed multicomponent carbonylative reaction for the synthesis of γ-aryl carboxylic acid esters from readily available methylarene, ethylene, and CO, which are widely found in multiple FDA-approved drugs.
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Affiliation(s)
- Jian-Xing Xu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Science, 116023 Dalian, Liaoning, China
| | - Chang-Sheng Kuai
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Science, 116023 Dalian, Liaoning, China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Science, 116023 Dalian, Liaoning, China.,Leibniz-Institut für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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11
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Direct synthesis of hyperbranched ethene oligomers and ethene‐
MA
co‐oligomers using iminopyridyl systems with weak neighboring group interactions. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220047] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Alternating copolymerization of carbon monoxide and vinyl arenes using [N,N] bidentate palladium catalysts. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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13
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Wang X, Feng Z, Guo W, Zhong W, Liu X, Wang C, Fu Z, Fan Z. Improvement of Catalytic Activity for
α
‐Diimine Nickel Complex with Active Sites Stabilized by Bulky Boron Counterions at Elevated Temperature. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6599] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xueer Wang
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Zhongwei Feng
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Wenqi Guo
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Wentao Zhong
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Xiaoyu Liu
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Cheng Wang
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Zhisheng Fu
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
| | - Zhiqiang Fan
- Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and Functionalization Hangzhou China
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14
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Recyclable supported Brønsted acidic ionic liquid catalysts with non-aromatic cations for the oligomerization of isobutene under mild conditions. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2021.112075] [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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15
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Yan Z, Bi H, Ding B, Wang H, Xu G, Dai S. A rigid-flexible double-layer steric strategy for ethylene (co)oligomerization with pyridine-imine Ni( ii) and Pd( ii) complexes. NEW J CHEM 2022. [DOI: 10.1039/d2nj00183g] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rigid-flexible double-layer steric strategy enhances the molecular weight of the resulting ethylene oligomers and promotes the co-oligomerization of ethylene and methyl acrylate.
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Affiliation(s)
- Zhengpeng Yan
- 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, 230601, China
| | - Huiqin Bi
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Beihang Ding
- 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, 230601, China
| | - Hui Wang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Guoyong Xu
- 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, 230601, China
| | - Shengyu Dai
- 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, 230601, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
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16
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Fan H, Chang G, Bi H, Gui X, Wang H, Xu G, Dai S. Facile Synthesis of Hyperbranched Ethylene Oligomers and Ethylene/Methyl Acrylate Co-oligomers with Different Microscopic Chain Architectures. ACS POLYMERS AU 2021; 2:88-96. [PMID: 36855342 PMCID: PMC9954315 DOI: 10.1021/acspolymersau.1c00039] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Low-molecular-weight (MW) ethylene oligomers with hyperbranched microstructures are often difficult to be synthesized by traditional catalytic processes. In this study, a series of N-terphenyl iminopyridyl ligands and the corresponding Pd(II) and Ni(II) complexes bearing remote conjugated substituents with different electronic effects (H, Me, F, Cl, and tBu) were synthesized in a simple and efficient way. These Pd(II) and Ni(II) complexes were highly effective in the ethylene oligomerization and co-oligomerization with methyl acrylate (MA). Low-MW ethylene oligomers with hyperbranched microstructures were generated using the iminopyridyl Pd(II) and Ni(II) complexes in ethylene oligomerization. More importantly, polar functionalized ethylene-MA co-oligomers with low MWs and varying incorporation ratios were generated via ethylene and MA co-oligomerization using the Pd(II) complexes. Most notably, these ethylene oligomers obtained by different metal species showed a significant difference in microscopic chain architectures. The remote conjugated electron effect showed little effect on the polymerization parameters of the iminopyridyl system, which is very different from those of the salicylaldiminato system.
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Affiliation(s)
- Huijun Fan
- 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 230601, China
| | - Guanru Chang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Inorganic
Functional Material, Huangshan University, Huangshan, Anhui 245041, China
| | - Huiqin Bi
- School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Xu Gui
- School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Hui Wang
- School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China,
| | - Guoyong Xu
- 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 230601, China,
| | - Shengyu Dai
- 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 230601, China,School
of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China,
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17
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Ge Y, Li S, Wang H, Dai S. Synthesis of Branched Polyethylene and Ethylene-MA Copolymers Using Unsymmetrical Iminopyridyl Nickel and Palladium Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00388] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- You Ge
- 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, 230601, China
| | - Shuaikang Li
- 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, 230601, China
| | - Hui Wang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China
| | - Shengyu Dai
- 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, 230601, China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China
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18
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Xiao Z, Zhong L, Du C, Du W, Zheng H, Cheung CS, Wang L, Gao H. Unprecedented Steric and Positioning Effects of Comonomer Substituents on α-Diimine Palladium-Catalyzed Vinyl Arene/CO Copolymerization. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02227] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Zefan Xiao
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Liu Zhong
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Cheng Du
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Wenbo Du
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Handou Zheng
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Chi Shing Cheung
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Lingzhi Wang
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Haiyang Gao
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
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19
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Zheng H, Zhong L, Du C, Du W, Cheung CS, Ruan J, Gao H. Combining hydrogen bonding interactions with steric and electronic modifications for thermally robust α-diimine palladium catalysts toward ethylene (co)polymerization. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01617a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Thermally robust α-diimine palladium catalysts are highly active for ethylene (co)polymerization at high temperatures by steric and electronic modifications in combination with hydrogen bonding interactions.
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Affiliation(s)
- Handou Zheng
- School of Materials Science and Engineering
- PCFM Lab
- GD HPPC Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Liu Zhong
- School of Materials Science and Engineering
- PCFM Lab
- GD HPPC Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Cheng Du
- School of Materials Science and Engineering
- PCFM Lab
- GD HPPC Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Wenbo Du
- School of Materials Science and Engineering
- PCFM Lab
- GD HPPC Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Chi Shing Cheung
- School of Materials Science and Engineering
- PCFM Lab
- GD HPPC Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Jingjing Ruan
- School of Materials Science and Engineering
- PCFM Lab
- GD HPPC Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Haiyang Gao
- School of Materials Science and Engineering
- PCFM Lab
- GD HPPC Lab
- Sun Yat-sen University
- Guangzhou 510275
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20
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Peng H, Li S, Li G, Dai S, Ji M, Liu Z, Guo L. Rotation‐restricted strategy to synthesize high molecular weight polyethylene using iminopyridyl nickel and palladium catalyst. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6140] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hongwei Peng
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
| | - Shuaikang Li
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Gen Li
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Shengyu Dai
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Mingjun Ji
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
| | - Zhe Liu
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
| | - Lihua Guo
- The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China
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21
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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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22
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23
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Zada M, Vignesh A, Guo L, Zhang R, Zhang W, Ma Y, Sun Y, Sun WH. Sterically and Electronically Modified Aryliminopyridyl-Nickel Bromide Precatalysts for an Access to Branched Polyethylene with Vinyl/Vinylene End Groups. ACS OMEGA 2020; 5:10610-10625. [PMID: 32426620 PMCID: PMC7227053 DOI: 10.1021/acsomega.0c01208] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
A series of 2-((arylimino)ethyl)pyridine derivatives (L1-L5), each containing N-2,4-bis(dibenzocycloheptyl) groups with variations in the steric/electronic properties of the ortho-substituent in the aryl ring, and the corresponding nickel bromide precatalysts [2-N{2,4-(C15H13)-6-R-C6H2}C7H7N]NiBr2 (R = Me (Ni1), Et (Ni2), i-Pr (Ni3), Cl (Ni4), or F (Ni5)), have been prepared in high yield. All the precatalysts are air-stable and characterized by Fourier transform infrared spectroscopy and elemental analysis. The molecular structures of Ni2 and Ni5 were proved through single-crystal X-ray diffraction analysis. The steric/electronic impact of the catalysts on ethylene polymerization and the resulting polymer properties were studied. Upon activation with either MAO or EASC, all the complexes displayed higher activities (up to 7.93 × 106 g of PE (mol of Ni)-1 h-1 with MAO) in ethylene polymerization and produced moderate to highly branched unsaturated polyethylene with a molecular weight of up to 16.55 kg/mol with narrow dispersities (1.6-2.4). Significantly, the generated polyethylenes are branched and unsaturated with a major class of internal double bond (-CH=CH-) as compared to the terminal double bond (-CH=CH2) (vinylene/vinyl = 9.8:1 to 1.8:1). Notably, their catalytic activities, types of unsaturation, and branches are highly affected by the nature of the ortho-substituent and reaction temperature. Moreover, the precatalysts Ni4 and Ni5 (with N-ortho = Cl and F) exhibited lower catalytic activities, produced low-molecular-weight polyethylene with a high melt temperature and the least number of branches with an increased level of terminal double bonds.
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Affiliation(s)
- Muhammad Zada
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS
Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Arumugam Vignesh
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Liwei Guo
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Beijing
Key Laboratory of Clothing Materials R&D and Assessment, Beijing
Engineering Research Center of Textile Nanofiber, School of Materials
Science and Engineering, Beijing Institute
of Fashion Technology, Beijing 100029, China
| | - Randi Zhang
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS
Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjuan Zhang
- Beijing
Key Laboratory of Clothing Materials R&D and Assessment, Beijing
Engineering Research Center of Textile Nanofiber, School of Materials
Science and Engineering, Beijing Institute
of Fashion Technology, Beijing 100029, China
| | - Yanping Ma
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yang Sun
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Key
Laboratory of Engineering Plastics and Beijing National Laboratory
for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- CAS
Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Key
Laboratory of High-Performance Synthetic Rubber and Its Composite
Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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Wang S, Wang L, Zhong L, Xu R, Wang X, Kang W, Gao H. C1-symmetric tert-butyl substituted pyridylamido hafnium complex for ethylene, α-olefin, and styrene polymerizations. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Joseph MC, Swarts AJ, Mapolie SF. Palladium (II) complexes chelated by 1‐substituted‐4‐pyridyl‐
1H
‐1,2,3‐triazole ligands as catalyst precursors for selective ethylene dimerization. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mohammed Cassiem Joseph
- DST‐NRF Centre of Excellence in Catalysis (c*change), Department of Chemistry and Polymer ScienceStellenbosch University Private Bag 1, Matieland 7601 Stellenbosch South Africa
| | - Andrew John Swarts
- Catalysis and Synthesis Research Group, Focus Area for Chemical Resource BeneficiationNorth‐West University 11 Hoffman Street Potchefstroom 2520 South Africa
| | - Selwyn Frank Mapolie
- DST‐NRF Centre of Excellence in Catalysis (c*change), Department of Chemistry and Polymer ScienceStellenbosch University Private Bag 1, Matieland 7601 Stellenbosch South Africa
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26
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Mu HL, Ye JH, Zhou GL, Li KK, Jian ZB. Ethylene Polymerization and Copolymerization with Polar Monomers by Benzothiophene-bridged BPMO-Pd Catalysts. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-020-2359-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Guo L, Liu W, Li K, Sun M, Sun W, Zhao L, Jiang G, Peng H, Liu Z, Dai S. Synthesis of functional and hyperbranched ethylene oligomers using unsymmetrical α-diimine palladium catalysts. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Gao J, Yang B, Chen C. Sterics versus electronics: Imine/phosphine-oxide-based nickel catalysts for ethylene polymerization and copolymerization. J Catal 2019. [DOI: 10.1016/j.jcat.2018.11.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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