51
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Lu H, Kang X, Luo Y. Structure-Based Relative Energy Prediction Model: A Case Study of Pd(II)-Catalyzed Ethylene Polymerization and the Electronic Effect of Ancillary Ligands. J Phys Chem B 2021; 125:12047-12053. [PMID: 34694809 DOI: 10.1021/acs.jpcb.1c05143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Rapidly mapping a reaction energy profile to understand the reaction mechanism is of great importance and highly desired for the discovery of new chemical reactions. Herein, a combination of density functional theory (DFT) calculations and regression analysis has been applied to construct quantitative structures-based energy prediction models, considering Pd(II)-catalyzed ethylene polymerization as an example, for rapid construction of the reaction energy profile. It is inspiring that only geometrical parameters of the reaction center of one species are capable of predicting the whole energy profile with high accuracy. The reaction energies of ethylene insertion and β-H elimination, which directly correlate with polymerization activity and the possibility of branch formation, were studied to elucidate the electronic effects of ancillary ligands. Further analyses of these models from the statistical and chemical points of view afforded useful information on the design of the catalyst ligand. The current work is expected to methodologically shed new light on rapidly mapping the energy profile of chemical reactions and further provide useful information for the development of the reactions.
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Affiliation(s)
- Han Lu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiaohui Kang
- College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.,PetroChina Petrochemical Research Institute, Beijing 102206, China
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52
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Ji G, Chen Z, Wang XY, Ning XS, Xu CJ, Zhang XM, Tao WJ, Li JF, Gao Y, Shen Q, Sun XL, Wang HY, Zhao JB, Zhang B, Guo YL, Zhao Y, Sun J, Luo Y, Tang Y. Direct copolymerization of ethylene with protic comonomers enabled by multinuclear Ni catalysts. Nat Commun 2021; 12:6283. [PMID: 34725330 PMCID: PMC8560877 DOI: 10.1038/s41467-021-26470-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/28/2021] [Indexed: 11/09/2022] Open
Abstract
Ethylene/polar monomer coordination copolymerization offers an attractive way of making functionalized polyolefins. However, ethylene copolymerization with industrially relevant short chain length alkenoic acid remain a big challenge. Here we report the efficient direct copolymerization of ethylene with vinyl acetic acid by tetranuclear nickel complexes. The protic monomer can be extended to acrylic acid, allylacetic acid, ω-alkenoic acid, allyl alcohol, and homoallyl alcohol. Based on X-ray analysis of precatalysts, control experiments, solvent-assisted electrospray ionization-mass spectrometry detection of key catalytic intermediates, and density functional theory studies, we propose a possible mechanistic scenario that involves a distinctive vinyl acetic acid enchainment enabled by Ni···Ni synergistic effects. Inspired by the mechanistic insights, binuclear nickel catalysts are designed and proved much more efficient for the copolymerization of ethylene with vinyl acetic acid or acrylic acid, achieving the highest turnover frequencies so far for both ethylene and polar monomers simultaneously.
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Affiliation(s)
- Gang Ji
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Zhou Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Xiao-Yan Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Xiao-Shan Ning
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Chong-Jie Xu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
- School of Chemistry and Chemical Engineering, Soochow University, Suzhou, China
| | - Xing-Min Zhang
- School of Chemistry and Chemical Engineering, Soochow University, Suzhou, China
| | - Wen-Jie Tao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Jun-Fang Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Yanshan Gao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Qi Shen
- School of Chemistry and Chemical Engineering, Soochow University, Suzhou, China
| | - Xiu-Li Sun
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
| | - Hao-Yang Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Jun-Bo Zhao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Bo Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Yin-Long Guo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
| | - Yanan Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, China
| | - Jiajie Sun
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, China.
- Petrochina Petrochemical Research Institute, Beijing, China.
| | - Yong Tang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
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53
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Kumar S, Dholakiya BZ, Jangir R. Role of organometallic complexes in olefin polymerization: a review report. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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54
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55
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Williams JOD, Solan GA, Xu J, Allen J, Harris RC, Timmermann VM. Investigating Branched Polyethylene Sensors for Applications in Prosthetics. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jamie O. D. Williams
- School of Physics and Astronomy University of Leicester University Road Leicester LE1 7RH UK
| | - Gregory A. Solan
- School of Chemistry University of Leicester University Road Leicester LE1 7RH UK
| | - Jinting Xu
- School of Chemistry University of Leicester University Road Leicester LE1 7RH UK
| | - Jack Allen
- School of Chemistry University of Leicester University Road Leicester LE1 7RH UK
| | - Rob C. Harris
- School of Chemistry University of Leicester University Road Leicester LE1 7RH UK
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56
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Skarjan L, Villegas‐Escobar N, Correa SA, Daniliuc CG, Matute RA, Rojas RS. Bulky and Electron‐Deficient α‐Iminocarboxamidato‐Nickel(II) Complexes: A Study of the Steric and Electronic Effects on Ethylene Activation. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Leon Skarjan
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 Heidelberg Germany
| | - Nery Villegas‐Escobar
- Centro Integrativo de Biología y Química Aplicada (CIBQA) Universidad Bernardo O'Higgins General Gana 1702 Santiago 8370854 Chile
| | - Sebastián A. Correa
- Departamento de Ciencias Químicas y Biológicas Universidad Bernardo O'Higgins General Gana 1702 Santiago Chile
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Ricardo A. Matute
- Centro Integrativo de Biología y Química Aplicada (CIBQA) Universidad Bernardo O'Higgins General Gana 1702 Santiago 8370854 Chile
- Division of Chemistry and Chemical Engineering California Institute of Technology Pasadena California 91125 USA
| | - René S. Rojas
- Laboratorio de Química Inorgánica Facultad de Química y de Farmacia Pontificia Universidad Católica de Chile Av. Vicuña Mackenna 4860 Casilla 306 Chile
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57
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Cruz TF, Lopes PS, Gomes PT. Allylnickel(II) complexes of bulky 5-substituted-2-iminopyrrolyl ligands. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115357] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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58
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Kitphaitun S, Yan Q, Nomura K. Effect of para-Substituents in Ethylene Copolymerizations with 1-Decene, 1-Dodecene, and with 2-Methyl-1-Pentene Using Phenoxide Modified Half-Titanocenes-MAO Catalyst Systems. ChemistryOpen 2021; 10:867-876. [PMID: 34227256 PMCID: PMC8409091 DOI: 10.1002/open.202100047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/21/2021] [Indexed: 11/16/2022] Open
Abstract
Effect of para-substituents in the ethylene (E) copolymerization with 1-decene (DC), 1-dodecene (DD), and with 2-methyl-1-pentene (2M1P) using a series of Cp*TiCl2 (O-2,6-i Pr2 -4-R-C6 H2 ) [R=H (1), t Bu (2), Ph (3), CHPh2 (4), CPh3 (5), SiMe3 (6), SiEt3 (7), and newly prepared 4-t BuC6 H4 (8) and 3,5-Me2 C6 H3 (9)]-MAO catalyst systems has been studied. The activities in these copolymerization reactions were affected by the para-substituent, and the SiMe3 (6), SiEt3 (7) and 3,5-Me2 C6 H3 (9) analogues showed the higher activities at 50 °C in the E copolymerization reactions with DC (1.06-1.44×106 kg-polymer/mol-Ti⋅h), DD (1.04-1.88×106 kg-polymer/mol-Ti⋅h) than the others, whereas no significant differences were observed in the comonomer incorporations. Complexes 6 and 7 also showed the higher activities at 50 °C in the E/2M1P copolymerization, and the 2M1P incorporation was affected by the para-substituent and the polymerization temperature; complex 9 showed better 2M1P incorporation at 25 °C.
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Affiliation(s)
- Suphitchaya Kitphaitun
- Department of ChemistryTokyo Metropolitan University1-1 Minami Osawa, HachiojiTokyo192-0397Japan
| | - Qing Yan
- Department of ChemistryTokyo Metropolitan University1-1 Minami Osawa, HachiojiTokyo192-0397Japan
| | - Kotohiro Nomura
- Department of ChemistryTokyo Metropolitan University1-1 Minami Osawa, HachiojiTokyo192-0397Japan
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59
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Wang Y, Jiang L, Ren X, Guo F, Hou Z. Synthesis of
bromine‐functionalized
polyolefins by
scandium‐catalyzed
copolymerization of
10‐bromo‐1‐decene
with ethylene, propylene, and dienes. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yinran Wang
- The State Key Laboratory of Fine Chemicals, School of Chemical Engineering Dalian University of Technology Dalian China
| | - Lei Jiang
- The State Key Laboratory of Fine Chemicals, School of Chemical Engineering Dalian University of Technology Dalian China
| | - Xiaorui Ren
- The State Key Laboratory of Fine Chemicals, School of Chemical Engineering Dalian University of Technology Dalian China
| | - Fang Guo
- The State Key Laboratory of Fine Chemicals, School of Chemical Engineering Dalian University of Technology Dalian China
| | - Zhaomin Hou
- The State Key Laboratory of Fine Chemicals, School of Chemical Engineering Dalian University of Technology Dalian China
- Advanced Catalysis Research Group RIKEN Center for Sustainable Resource Science Saitama Japan
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60
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Hu X, Zhang Y, Li B, Jian Z. Fluorinated α-Diimine Nickel Mediated Ethylene (Co)Polymerization. Chemistry 2021; 27:11935-11942. [PMID: 34114692 DOI: 10.1002/chem.202101521] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Indexed: 11/10/2022]
Abstract
Fluorine substituents in transition metal catalysts are of great importance in olefin polymerization catalysis; however, the comprehensive effect of fluorine substituents is elusive in seminal late transition metal α-diimine catalytic system. In this contribution, fluorine substituents at various positions (ortho-, meta-, and para-F) and with different numbers (Fn ; n=0, 1, 2, 3, 5) were installed into the well-defined N-terphenyl amine and thus were studied for the first time in the nickel α-diimine promoted ethylene polymerization and copolymerization with polar monomers. The position of the fluorine substituent was particularly crucial in these polymerization reactions in terms of catalytic activity, polymer molecular weight, branching density, and incorporation of polar monomer, and thus a picture on the fluorine effect was given. As a notable result, the ortho-F substituted α-diimine nickel catalyst produced highly linear polyethylenes with an extremely high molecular weight (Mw =8703 kDa) and a significantly low degree of branching of 1.4/1000 C; however, the meta-F and/or para-F substituted α-diimine nickel catalysts generated highly branched (up to 80.2/1000 C) polyethylenes with significantly low molecular weights (Mw =20-50 kDa).
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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, Renmin Street 5625, Changchun, 130022, China.,University of Science and Technology of China, Hefei, 230026, 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
| | - Baixiang Li
- 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.,University of Science and Technology of China, Hefei, 230026, China
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61
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Zhu N, Liang T, Huang Y, Pang W, Chen M, Tan C. Influences of Ligand Backbone Substituents on Phosphinecarbonylpalladium and -nickel Catalysts for Ethylene Polymerization and Copolymerization with Polar Monomers. Inorg Chem 2021; 60:13080-13090. [PMID: 34357773 DOI: 10.1021/acs.inorgchem.1c01490] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of phosphinecarbonylpalladium and -nickel catalysts bearing various substituents on the ligand backbone were prepared, characterized, and used in ethylene polymerization and copolymerization with polar monomers. The Pd and Ni catalysts can achieve high activities as well as high polymer molecular weights in both ethylene polymerization and copolymerization with polar monomers. The electron-donating group from the carbonyl side can effectively increase the polymer molecular weights. Utilization of a cyclic backbone structure can increase the catalytic activities at the expense of the polymer molecular weights. Moreover, installation of a pyridyl moiety in the ligand backbone can enable Lewis acid responsiveness and can enhance the polymerization activities. These results suggest the importance of the ligand backbone for the properties of catalysts in ethylene polymerization and copolymerization reactions.
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Affiliation(s)
- Ningning Zhu
- 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
| | - Tao Liang
- 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
| | - Yongshuang Huang
- 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
| | - Wenmin Pang
- 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
| | - Min Chen
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
| | - Chen Tan
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
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62
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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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63
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Li Q, Wang C, Mu H, Jian Z. A readily available neutral nickel catalyst for accessing linear ultrahigh molecular weight polyethylene in a living manner. J Catal 2021. [DOI: 10.1016/j.jcat.2021.06.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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64
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Zhang H, Zou C, Zhao H, Cai Z, Chen C. Hydrogen-Bonding-Induced Heterogenization of Nickel and Palladium Catalysts for Copolymerization of Ethylene with Polar Monomers. Angew Chem Int Ed Engl 2021; 60:17446-17451. [PMID: 34036725 DOI: 10.1002/anie.202106682] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/23/2021] [Indexed: 02/04/2023]
Abstract
The practical synthesis of polar-functionalized polyolefins using transition-metal-catalyzed copolymerization of olefins with polar monomers is a challenge; the use of heterogeneous catalysts is little explored. Herein, we report the synthesis of heterogeneous naphthoquinone-based nickel (Ni/SiO2 ) and palladium (Pd/SiO2 ) catalysts through hydrogen bonding interactions of the ligands with the silica surface. Ni/SiO2 exhibits high activities (up to 2.65×106 g mol-1 h-1 ) during the copolymerization of ethylene with 5-hexene-1-yl-acetate, affording high-molecular-weight (Mn up to 630 000) polar-functionalized semicrystalline polyethylene (comonomer incorporation up to 2.8 mol %), along with great morphology control. The resulting copolymers possess improved surface properties and great mechanical properties. Pd/SiO2 can mediate ethylene copolymerization with polar monomers with moderate activity to produce high-molecular-weight copolymers with tunable comonomer incorporation.
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Affiliation(s)
- Hu Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Chen Zou
- 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, P. R. China
| | - Huipeng Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. 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, 230026, P. R. China
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65
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Zhang H, Zou C, Zhao H, Cai Z, Chen C. Hydrogen‐Bonding‐Induced Heterogenization of Nickel and Palladium Catalysts for Copolymerization of Ethylene with Polar Monomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106682] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hu Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Chen Zou
- 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 P. R. China
| | - Huipeng Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. 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 230026 P. R. China
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66
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Zhang J, Mason AH, Wang Y, Motta A, Kobayashi T, Pruski M, Gao Y, Marks TJ. Beyond the Active Site. Cp*ZrMe
3
/Sulfated Alumina‐Catalyzed Olefin Polymerization Tacticity via Catalyst⋅⋅⋅Surface Ion‐Pairing. ChemCatChem 2021. [DOI: 10.1002/cctc.202100406] [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)
- Jialong Zhang
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Alexander H. Mason
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Yang Wang
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Alessandro Motta
- Dipartimento di Scienze Chimiche Università di Roma “La Sapienza” and INSTM UdR Roma Piazzale Aldo Moro 5 I-00185 Roma Italy
| | - Takeshi Kobayashi
- U.S. DOE Ames Laboratory Iowa State University Ames IA 50011–3020 USA
| | - Marek Pruski
- U.S. DOE Ames Laboratory Iowa State University Ames IA 50011–3020 USA
| | - Yanshan Gao
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
| | - Tobin J. Marks
- Department of Chemistry and the Institute for Catalysis in Energy Processes (ICEP) Northwestern University 2145 Sheridan Road Evanston IL 60208–3113 USA
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67
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Rodriguez J, Conley MP. Ethylene Polymerization Activity of (R 3P)Ni(codH) + (cod = 1,5-cylcooctadiene) Sites Supported on Sulfated Zirconium Oxide. Inorg Chem 2021; 60:6946-6949. [PMID: 33844523 DOI: 10.1021/acs.inorgchem.1c00454] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PAr3 containing o-OMe, o-Me, or o-Et substituents reacts with Brønsted sites on sulfated zirconium oxide (SZO) to form [HPAr3][SZO]. The phosphonium sites on this material react with bis(cyclooctadiene)nickel [Ni(cod)2] to form [Ni(PAr3)(codH)][SZO] that are active in ethylene polymerization reactions. Selective poisoning studies with pyridine show that ∼90% of the Ni(PAr3)(codH)+ sites in this material are active in polymerization reactions.
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Affiliation(s)
- Jessica Rodriguez
- Department of Chemistry, University of California-Riverside (UCR), Riverside, California 92521, United States
| | - Matthew P Conley
- Department of Chemistry, University of California-Riverside (UCR), Riverside, California 92521, United States
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68
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Lee HJ, Baek JW, Seo YH, Lee HC, Jeong SM, Lee J, Lee CG, Lee BY. Preparation of High-Purity Ammonium Tetrakis(pentafluorophenyl)borate for the Activation of Olefin Polymerization Catalysts. Molecules 2021; 26:molecules26092827. [PMID: 34068755 PMCID: PMC8126221 DOI: 10.3390/molecules26092827] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/30/2022] Open
Abstract
Homogeneous olefin polymerization catalysts are activated in situ with a co-catalyst ([PhN(Me)2-H]+[B(C6F5)4]− or [Ph3C]+[B(C6F5)4]−) in bulk polymerization media. These co-catalysts are insoluble in hydrocarbon solvents, requiring excess co-catalyst (>3 eq.). Feeding the activated species as a solution in an aliphatic hydrocarbon solvent may be advantageous over the in situ activation method. In this study, highly pure and soluble ammonium tetrakis(pentafluorophenyl)borates ([Me(C18H37)2N-H]+[B(C6F5)4]− and [(C18H37)2NH2]+[B(C6F5)4]−) containing neither water nor Cl− salt impurities were prepared easily via the acid–base reaction of [PhN(Me)2-H]+[B(C6F5)4]− and the corresponding amine. Using the prepared ammonium salts, the activation reactions of commercial-process-relevant metallocene (rac-[ethylenebis(tetrahydroindenyl)]Zr(Me)2 (1-ZrMe2), [Ph2C(Cp)(3,6-tBu2Flu)]Hf(Me)2 (3-HfMe2), [Ph2C(Cp)(2,7-tBu2Flu)]Hf(Me)2 (4-HfMe2)) and half-metallocene complexes ([(η5-Me4C5)Si(Me)2(κ-NtBu)]Ti(Me)2 (5-TiMe2), [(η5-Me4C5)(C9H9(κ-N))]Ti(Me)2 (6-TiMe2), and [(η5-Me3C7H1S)(C10H11(κ-N))]Ti(Me)2 (7-TiMe2)) were monitored in C6D12 with 1H NMR spectroscopy. Stable [L-M(Me)(NMe(C18H37)2)]+[B(C6F5)4]− species were cleanly generated from 1-ZrMe2, 3-HfMe2, and 4-HfMe2, while the species types generated from 5-TiMe2, 6-TiMe2, and 7-TiMe2 were unstable for subsequent transformation to other species (presumably, [L-Ti(CH2N(C18H37)2)]+[B(C6F5)4]−-type species). [L-TiCl(N(H)(C18H37)2)]+[B(C6F5)4]−-type species were also prepared from 5-TiCl(Me) and 6-TiCl(Me), which were newly prepared in this study. The prepared [L-M(Me)(NMe(C18H37)2)]+[B(C6F5)4]−-, [L-Ti(CH2N(C18H37)2)]+[B(C6F5)4]−-, and [L-TiCl(N(H)(C18H37)2)]+[B(C6F5)4]−-type species, which are soluble and stable in aliphatic hydrocarbon solvents, were highly active in ethylene/1-octene copolymerization performed in aliphatic hydrocarbon solvents.
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Affiliation(s)
- Hyun-Ju Lee
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (H.-J.L.); (J.-W.B.); (Y.-H.S.); (H.-C.L.); (S.-M.J.)
| | - Jun-Won Baek
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (H.-J.L.); (J.-W.B.); (Y.-H.S.); (H.-C.L.); (S.-M.J.)
| | - Yeong-Hyun Seo
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (H.-J.L.); (J.-W.B.); (Y.-H.S.); (H.-C.L.); (S.-M.J.)
| | - Hong-Cheol Lee
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (H.-J.L.); (J.-W.B.); (Y.-H.S.); (H.-C.L.); (S.-M.J.)
| | - Sun-Mi Jeong
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (H.-J.L.); (J.-W.B.); (Y.-H.S.); (H.-C.L.); (S.-M.J.)
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea;
| | - Chong-Gu Lee
- Precious Catalysts Inc., 201 Duryu-gil, Angangeup, Gyeongju 38029, Korea;
| | - Bun-Yeoul Lee
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (H.-J.L.); (J.-W.B.); (Y.-H.S.); (H.-C.L.); (S.-M.J.)
- Correspondence: ; Tel.: +82-31-219-1844
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69
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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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70
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Synthesis of 1,2-bis(imidazolidin-2-imine)benzene nickel complexes and their application for norbornene (co)polymerization with styrene. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110426] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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71
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72
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73
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Mote NR, Gaikwad SR, Khopade KV, Gonnade RG, Chikkali SH. Controlled di-lithiation enabled synthesis of phosphine-sulfonamide ligands and implications in ethylene oligomerization. Dalton Trans 2021; 50:3717-3723. [PMID: 33634816 DOI: 10.1039/d1dt00093d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalyst design for ethylene oligomerization has attracted significant interest. Herein, we report the synthesis of phosphine-sulfonamide-derived palladium complexes and examine their performance in ethylene oligomerization. Arresting a dilithiation intermediate of N-(2-bromophenyl)-4-methylbenzenesulfonamide (1) at -84 °C selectively produced N-(2-(bis(2-methoxyphenyl)phosphanyl)phenyl)-4-methylbenzenesulfonamide (L1A). However, the same reaction at -41 °C delivered a different ligand; 2-(bis(2-methoxyphenyl)phosphanyl)-4-methyl-N-phenylbenzenesulfonamide (L2A). The generality of our strategy has been demonstrated by preparing N-(2-(diphenylphosphanyl)phenyl)-4-methylbenzenesulfonamide (L1B) and 2-(diphenylphosphanyl)-4-methyl-N-phenylbenzenesulfonamide (L2B). Subsequently, L1A and L1B were treated with a palladium precursor to yield 5-membered complexes C1 and C2, respectively. In contrast, L2A upon treatment with palladium produced a 6-membered metal complex C3. Thus, a small library of 7 palladium complexes (C1-C7) were synthesized by varying the donor moiety (pyridine, DMSO, and acetonitrile). The identity of palladium complexes was unambiguously ascertained using a combination of spectroscopic and analytical methods, including single-crystal X-ray diffraction. The performance of the complexes C1-C7 was investigated in ethylene oligomerization and almost all of them were found to be active. The resultant ethylene oligomers were characterized using 1H and 13C NMR, MALDI-ToF-MS, and GPC. Detailed screening of reaction parameters revealed 100 °C and 40 bars ethylene to be optimal conditions. Complex C5 outperformed other complexes and produced ethylene oligomers with a molecular weight of 1000-1900 g mol-1.
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Affiliation(s)
- Nilesh R Mote
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
| | - Shahaji R Gaikwad
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
| | - Kishor V Khopade
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
| | - Rajesh G Gonnade
- Center for Materials Characterization, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India
| | - Samir H Chikkali
- Polyolefin Laboratory, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India. and Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
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74
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Wang C, Kang X, Dai S, Cui F, Li Y, Mu H, Mecking S, Jian Z. Efficient Suppression of Chain Transfer and Branching via C s -Type Shielding in a Neutral Nickel(II) Catalyst. Angew Chem Int Ed Engl 2021; 60:4018-4022. [PMID: 33200862 PMCID: PMC7898505 DOI: 10.1002/anie.202013069] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Indexed: 11/30/2022]
Abstract
An effective shielding of both apical positions of a neutral NiII active site is achieved by dibenzosuberyl groups, both attached via the same donors' N-aryl group in a Cs -type arrangement. The key aniline building block is accessible in a single step from commercially available dibenzosuberol. This shielding approach suppresses chain transfer and branch formation to such an extent that ultrahigh molecular weight polyethylenes (5×106 g mol-1 ) are accessible, with a strictly linear microstructure (<0.1 branches/1000C). Key features of this highly active (4.3×105 turnovers h-1 ) catalyst are an exceptionally facile preparation, thermal robustness (up to 90 °C polymerization temperature), ability for living polymerization and compatibility with THF as a polar reaction medium.
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Affiliation(s)
- Chaoqun Wang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesRenmin Street 5625Changchun130022China
- University of Science and Technology of ChinaHefei230026China
| | - Xiaohui Kang
- College of PharmacyDalian Medical UniversityDalian116044China
| | - Shengyu Dai
- Institutes of Physical Science and Information TechnologyKey Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefeiAnhui230601China
| | - Fengchao Cui
- Key laboratory of Polyoxometalate Science of the Ministry of EducationFaculty of ChemistryNortheast Normal UniversityChangchun130024China
| | - Yunqi Li
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesRenmin Street 5625Changchun130022China
| | - Hongliang Mu
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesRenmin Street 5625Changchun130022China
| | - Stefan Mecking
- Chair of Chemical Materials ScienceDepartment of ChemistryUniversity of Konstanz78457KonstanzGermany
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesRenmin Street 5625Changchun130022China
- University of Science and Technology of ChinaHefei230026China
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75
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Wang XL, Zhang YP, Wang F, Pan L, Wang B, Li YS. Robust and Reactive Neutral Nickel Catalysts for Ethylene Polymerization and Copolymerization with a Challenging 1,1-Disubstituted Difunctional Polar Monomer. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04450] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xu-ling Wang
- Tianjin Key Lab of Composite & Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yan-ping Zhang
- Tianjin Key Lab of Composite & Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Fei Wang
- Tianjin Key Lab of Composite & Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Li Pan
- Tianjin Key Lab of Composite & Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Bin Wang
- Tianjin Key Lab of Composite & Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yue-sheng Li
- Tianjin Key Lab of Composite & Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
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76
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Zanchin G, Leone G. Polyolefin thermoplastic elastomers from polymerization catalysis: Advantages, pitfalls and future challenges. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2020.101342] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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77
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78
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Antonov AA, Bryliakov KP. Post-metallocene catalysts for the synthesis of ultrahigh molecular weight polyethylene: Recent advances. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110162] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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79
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Zhou G, Cui L, Mu H, Jian Z. Custom-made polar monomers utilized in nickel and palladium promoted olefin copolymerization. Polym Chem 2021. [DOI: 10.1039/d1py00492a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In this review, the functions of custom-made polar monomers are insightfully emphasized in the preparation of functional polyolefins.
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Affiliation(s)
- Guanglin Zhou
- 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
| | - Hongliang Mu
- 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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80
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Wang C, Kang X, Dai S, Cui F, Li Y, Mu H, Mecking S, Jian Z. Efficient Suppression of Chain Transfer and Branching via
C
s
‐Type Shielding in a Neutral Nickel(II) Catalyst. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Chaoqun Wang
- 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 Science and Technology of China Hefei 230026 China
| | - Xiaohui Kang
- College of Pharmacy Dalian Medical University Dalian 116044 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
| | - Fengchao Cui
- Key laboratory of Polyoxometalate Science of the Ministry of Education Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Yunqi Li
- 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
| | - Stefan Mecking
- Chair of Chemical Materials Science Department of Chemistry University of Konstanz 78457 Konstanz Germany
| | - 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
- University of Science and Technology of China Hefei 230026 China
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81
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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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82
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The Effect of SiMe
3
and SiEt
3
Para
Substituents for High Activity and Introduction of a Hydroxy Group in Ethylene Copolymerization Catalyzed by Phenoxide‐Modified Half‐Titanocenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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83
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Doerr AM, Burroughs JM, Gitter SR, Yang X, Boydston AJ, Long BK. Advances in Polymerizations Modulated by External Stimuli. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03802] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Alicia M. Doerr
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - Justin M. Burroughs
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - Sean R. Gitter
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Xuejin Yang
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Andrew J. Boydston
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Chemical and Biological Engineering and Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Brian K. Long
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
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84
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Muhammad Q, Pang W, Wang F, Tan C. Ortho-Functionalized Dibenzhydryl Substituents in α-Diimine Pd Catalyzed Ethylene Polymerization and Copolymerization. Polymers (Basel) 2020; 12:E2509. [PMID: 33126562 PMCID: PMC7692462 DOI: 10.3390/polym12112509] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 10/23/2020] [Accepted: 10/24/2020] [Indexed: 12/31/2022] Open
Abstract
Sterically bulky diarylmethyl-based ligands have received increasing attention in the field of late-transition-metal catalyzed olefin polymerization. Ortho-substituents may have a significant impact on the performance of diarylmethyl-based α-diimine Pd catalysts. In this contribution, a series of α-diimine Pd catalysts bearing ortho-methoxyl/hydroxyl functionalized dibenzhydryl units were prepared, characterized, and investigated in ethylene polymerization and copolymerization with methyl acrylate (MA). The catalytic performances were improved by introducing more ortho-substituents. The catalysts exhibited good thermal stabilities at high temperatures, producing branched polyethylenes. The catalysts bearing hydroxyl groups possessing intramolecular H-bonding, resulted in slightly higher incorporation ratios of MA unit when compared with the catalysts bearing methoxyl groups.
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Affiliation(s)
- Qasim Muhammad
- Department of Polymer Science and Engineering, University of Science and Technology of China, Anhui, Hefei 230601, China; (Q.M.); (W.P.)
| | - Wenmin Pang
- Department of Polymer Science and Engineering, University of Science and Technology of China, Anhui, Hefei 230601, China; (Q.M.); (W.P.)
| | - Fuzhou Wang
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Anhui, Hefei 230601, China
| | - Chen Tan
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Anhui, Hefei 230601, China
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85
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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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86
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Kitphaitun S, Yan Q, Nomura K. The Effect of SiMe 3 and SiEt 3 Para Substituents for High Activity and Introduction of a Hydroxy Group in Ethylene Copolymerization Catalyzed by Phenoxide-Modified Half-Titanocenes. Angew Chem Int Ed Engl 2020; 59:23072-23076. [PMID: 32886419 DOI: 10.1002/anie.202010559] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/29/2020] [Indexed: 11/07/2022]
Abstract
Remarkable effects of SiMe3 and SiEt3 para-substituents in the phenoxide-modified half-titanocenes, Cp*TiCl2 (O-2,6-i Pr2 -4-R-C6 H2 ) [R=SiMe3 (6), SiEt3 (7)], toward the catalytic activities in ethylene copolymerizations with 2-methyl-1-pentene, 1-decene, 1-dodecene and with 9-decen-1-ol (DC-OH) have been demonstrated. The activities by 6, 7 at 50 °C showed higher than those conducted at 25 °C in all cases in the presence of MAO cocatalyst. Efficient synthesis of high-molecular-weight (HMW) ethylene copolymers incorporating DC-OH (or 5-hexen-1-ol, HX-OH) has been attained in the copolymerization by 7, which showed better DC-OH (HX-OH) incorporation at 50 °C to afford the HMW copolymers, poly(ethylene-co-DC-OH)s, with high activities (activity 1.21-3.81×105 kg-polymer mol-1 -Ti h, Mn =6.55-10.0×104 , DC-OH 2.3-3.6 mol %).
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Affiliation(s)
- Suphitchaya Kitphaitun
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0376, Japan
| | - Qing Yan
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0376, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0376, Japan
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87
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A concerted double-layer steric strategy enables an ultra-highly active nickel catalyst to access ultrahigh molecular weight polyethylenes. J Catal 2020. [DOI: 10.1016/j.jcat.2020.07.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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88
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Huang M, Chen J, Wang B, Huang W, Chen H, Gao Y, Marks TJ. Polar Isotactic and Syndiotactic Polypropylenes by Organozirconium‐Catalyzed Masking‐Reagent‐Free Propylene and Amino–Olefin Copolymerization. Angew Chem Int Ed Engl 2020; 59:20522-20528. [DOI: 10.1002/anie.202005635] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/30/2020] [Indexed: 02/02/2023]
Affiliation(s)
- Minglu Huang
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
- Wanhua Chemical Group Co., Ltd. Yantai Shandong Province 264002 P. R. China
| | - Jiazhen Chen
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Binghao Wang
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Wei Huang
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Haibo Chen
- Wanhua Chemical Group Co., Ltd. Yantai Shandong Province 264002 P. R. China
| | - Yanshan Gao
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Tobin J. Marks
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
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89
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Huang M, Chen J, Wang B, Huang W, Chen H, Gao Y, Marks TJ. Polar Isotactic and Syndiotactic Polypropylenes by Organozirconium‐Catalyzed Masking‐Reagent‐Free Propylene and Amino–Olefin Copolymerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Minglu Huang
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
- Wanhua Chemical Group Co., Ltd. Yantai Shandong Province 264002 P. R. China
| | - Jiazhen Chen
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Binghao Wang
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Wei Huang
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Haibo Chen
- Wanhua Chemical Group Co., Ltd. Yantai Shandong Province 264002 P. R. China
| | - Yanshan Gao
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Tobin J. Marks
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
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90
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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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91
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Zhang Y, Wang C, Mecking S, Jian Z. Ultrahigh Branching of Main-Chain-Functionalized Polyethylenes by Inverted Insertion Selectivity. Angew Chem Int Ed Engl 2020; 59:14296-14302. [PMID: 32441874 PMCID: PMC7496749 DOI: 10.1002/anie.202004763] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/09/2020] [Indexed: 11/06/2022]
Abstract
Branched polyolefin microstructures resulting from so-called "chain walking" are a fascinating feature of late transition metal catalysts; however, to date it has not been demonstrated how desirable branched polyolefin microstructures can be generated thereby. We demonstrate how highly branched polyethylenes with methyl branches (220 Me/1000 C) exclusively and very high molecular weights (ca. 106 g mol-1 ), reaching the branch density and microstructure of commercial ethylene-propylene elastomers, can be generated from ethylene alone. At the same time, polar groups on the main chain can be generated by in-chain incorporation of methyl acrylate. Key to this strategy is a novel rigid environment in an α-diimine PdII catalyst with a steric constraint that allows for excessive chain walking and branching, but restricts branch formation to methyl branches, hinders chain transfer to afford a living polymerization, and inverts the regioselectivity of acrylate insertion to a 1,2-mode.
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Affiliation(s)
- Yuxing Zhang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesRenmin Street 5625Changchun130022China
- University of Science and Technology of ChinaHefei230026China
| | - Chaoqun Wang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesRenmin Street 5625Changchun130022China
- University of Science and Technology of ChinaHefei230026China
| | - Stefan Mecking
- Chair of Chemical Materials ScienceDepartment of ChemistryUniversity of Konstanz78457KonstanzGermany
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesRenmin Street 5625Changchun130022China
- University of Science and Technology of ChinaHefei230026China
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92
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Tan C, Chen C. Nickel catalysts for the synthesis of ultra-high molecular weight polyethylene. Sci Bull (Beijing) 2020; 65:1137-1138. [PMID: 36659138 DOI: 10.1016/j.scib.2020.04.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Chen Tan
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, 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 230026, China.
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93
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Léonard NG, Yruegas S, Ho SC, Sattler A, Bezdek MJ, Chirik PJ. Synthesis of Cationic, Dimeric α-Diimine Nickel Hydride Complexes and Relevance to the Polymerization of Olefins. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Nadia G. Léonard
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Sam Yruegas
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Suzzy C. Ho
- Corporate Strategic Research, ExxonMobil Research & Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Aaron Sattler
- Corporate Strategic Research, ExxonMobil Research & Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Máté J. Bezdek
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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94
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Zhang Y, Wang C, Mecking S, Jian Z. Ultrahigh Branching of Main‐Chain‐Functionalized Polyethylenes by Inverted Insertion Selectivity. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004763] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuxing Zhang
- 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 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 Renmin Street 5625 Changchun 130022 China
- University of Science and Technology of China Hefei 230026 China
| | - Stefan Mecking
- Chair of Chemical Materials Science Department of Chemistry University of Konstanz 78457 Konstanz Germany
| | - 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
- University of Science and Technology of China Hefei 230026 China
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95
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Rajput BS, Pawal SB, Bodkhe DV, Rao IN, Sainath AVS, Chikkali SH. Renewing polyethylene: Insertion copolymerization of sugar derived hydrophilic monomers with ethylene. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109775] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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96
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Selective distribution and contribution of nickel based pre-catalyst in the multisite catalyst for the synthesis of desirable bimodal polyethylene. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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97
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Gaikwad SR, Patel K, Deshmukh SS, Mote NR, Birajdar RS, Pandole SP, Chugh J, Chikkali SH. Palladium-Catalyzed Insertion of Ethylene and 1,1-Disubstituted Difunctional Olefins: An Experimental and Computational Study. Chempluschem 2020; 85:1200-1209. [PMID: 32584523 DOI: 10.1002/cplu.202000309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/21/2020] [Indexed: 11/09/2022]
Abstract
Insertion or coordination copolymerization of ethylene with di-substituted olefins is challenging and the choice of di-substituted mono-functional olefin versus di-substituted di-functional olefin (DDO) appears to be decisive. Here we show that DDO-inserted species are amenable to ethylene insertion and polymerization. DDOs such as 2-acetamidoacrylic acid (AAA), methyl 2-acetamidoacrylate (MAAA), and ethyl 2-cyanoacrylate (ECA) were treated with palladium complex [{P∧O}PdMe(L)] (P∧O=κ2 -P,O-Ar2 PC6 H4 SO2 O with Ar=2-MeOC6 H4 ; L=C2 H6 OS) and the existence of respective insertion intermediates in moderate yield (up to 37 %) was established. These intermediates were exposed to ethylene and corresponding ethylene-inserted products were isolated and characterized. A careful comparison with three model compounds confirmed ethylene insertion and polymerization. Thus, the combined experimental and computational investigations show that DDO-inserted species can undergo ethylene insertion and polymerization.
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Affiliation(s)
- Shahaji R Gaikwad
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Ketan Patel
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Membrane Science and Separation Technology Division, CSIR Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar, 364002, India
| | - Satej S Deshmukh
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Nilesh R Mote
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Rajkumar S Birajdar
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Satish P Pandole
- Central NMR Facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune-411008, India
| | - Jeetender Chugh
- Department of Chemistry, Indian Institute of Science Education & Research Pune, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Samir H Chikkali
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
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98
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Dai S, Chen C. A Self-Supporting Strategy for Gas-Phase and Slurry-Phase Ethylene Polymerization using Late-Transition-Metal Catalysts. Angew Chem Int Ed Engl 2020; 59:14884-14890. [PMID: 32419295 DOI: 10.1002/anie.202004024] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Indexed: 12/12/2022]
Abstract
The polyolefin industry is dominated by gas-phase and slurry-phase polymerization using heterogeneous catalysts. In contrast, academic research is focused on homogeneous systems, especially for late-transition-metal catalysts. The heterogenization of homogeneous catalysts is a general strategy to provide catalyst solutions for existing industrial polyolefin synthesis. Herein, we report an alternative, potentially general strategy for using homogeneous late-transition-metal catalysts in gas-phase and slurry-phase polymerization. In this self-supporting strategy, catalysts with moderate chain-walking capabilities produced porous polymer supports during gas-phase ethylene polymerization. Chain walking, in which the metal center can move up and down the polymer chain during polymerization, ensures that the metal center can travel along the polymer chain to find suitable sites for ethylene enchainment. This strategy enables simple heterogenization of catalysts on solid supports for slurry-phase polymerization. Most importantly, various branched ultra-high-molecular-weight polyethylenes can be prepared under various polymerization conditions with proper catalyst selection.
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Affiliation(s)
- Shengyu Dai
- 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.,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
| | - 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, 230026, China
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99
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Dai S, Chen C. A Self‐Supporting Strategy for Gas‐Phase and Slurry‐Phase Ethylene Polymerization using Late‐Transition‐Metal Catalysts. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shengyu Dai
- 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
- 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
| | - 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 230026 China
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100
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New family of single-component Ni catalysts for ethylene polymerization to high and ultrahigh molecular weight polyethylene. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9708-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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