A DFT-based mechanistic and catalyst design study on the copolymerization of ethylene with polar monomers catalyzed by [N, P]Ti complexes.

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Title: A DFT-based mechanistic and catalyst design study on the copolymerization of ethylene with polar monomers catalyzed by [N, P]Ti complexes.
Authors: Zhang, Jiaojiao1 (AUTHOR), Wu, Wenqi2 (AUTHOR), Cong, Wenwen1 (AUTHOR), Chen, Xia1 (AUTHOR), Sun, Qihang1 (AUTHOR), Cao, Jielun1 (AUTHOR), Li, Yi3 (AUTHOR) liyi@licp.cas.cn
Source: Journal of Polymer Research. May2026, Vol. 33 Issue 5, p1-13. 13p.
Subjects: Copolymerization, Titanium catalysts, Monomers, Density functional theory, Ligands (Chemistry), Fluorine, Polyolefins, Ethylene
Abstract: Density functional theory (DFT) calculations were employed to elucidate the mechanism of ethylene copolymerization with α-olefins (1-octene) and a polar monomer (9-decen-1-ol) catalyzed by titanium complexes bearing [N, P] ligands. The study systematically evaluates how fluorination versus methylation of the ligand framework influences the catalytic cycle through electronic and steric effects. Results demonstrate that electron-withdrawing fluorine substituents reduce insertion barriers for ethylene homopolymerization and improve incorporation kinetics for 1-octene. Most significantly, fluorination substantially elevates the energy barrier for β‑hydride elimination in systems containing 9‑decen‑1‑ol, thereby suppressing chain termination and facilitating the production of higher molecular weight polar-functionalized copolymers. Non‑covalent interaction analyses further reveal enhanced catalyst-monomer associations, correlating with higher activity. This work establishes a predictive DFT model that directly links ligand architecture to polymerization performance, offering a rational design strategy for next‑generation catalysts toward functionalized polyolefins. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Polymer Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: A DFT-based mechanistic and catalyst design study on the copolymerization of ethylene with polar monomers catalyzed by [N, P]Ti complexes.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Polymer+Research%22">Journal of Polymer Research</searchLink>. May2026, Vol. 33 Issue 5, p1-13. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Copolymerization%22">Copolymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+catalysts%22">Titanium catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Monomers%22">Monomers</searchLink><br /><searchLink fieldCode="DE" term="%22Density+functional+theory%22">Density functional theory</searchLink><br /><searchLink fieldCode="DE" term="%22Ligands+%28Chemistry%29%22">Ligands (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorine%22">Fluorine</searchLink><br /><searchLink fieldCode="DE" term="%22Polyolefins%22">Polyolefins</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene%22">Ethylene</searchLink>
– Name: Abstract
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  Data: Density functional theory (DFT) calculations were employed to elucidate the mechanism of ethylene copolymerization with α-olefins (1-octene) and a polar monomer (9-decen-1-ol) catalyzed by titanium complexes bearing [N, P] ligands. The study systematically evaluates how fluorination versus methylation of the ligand framework influences the catalytic cycle through electronic and steric effects. Results demonstrate that electron-withdrawing fluorine substituents reduce insertion barriers for ethylene homopolymerization and improve incorporation kinetics for 1-octene. Most significantly, fluorination substantially elevates the energy barrier for β‑hydride elimination in systems containing 9‑decen‑1‑ol, thereby suppressing chain termination and facilitating the production of higher molecular weight polar-functionalized copolymers. Non‑covalent interaction analyses further reveal enhanced catalyst-monomer associations, correlating with higher activity. This work establishes a predictive DFT model that directly links ligand architecture to polymerization performance, offering a rational design strategy for next‑generation catalysts toward functionalized polyolefins. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Journal of Polymer Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1007/s10965-026-04901-x
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      – Code: eng
        Text: English
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        PageCount: 13
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      – SubjectFull: Copolymerization
        Type: general
      – SubjectFull: Titanium catalysts
        Type: general
      – SubjectFull: Monomers
        Type: general
      – SubjectFull: Density functional theory
        Type: general
      – SubjectFull: Ligands (Chemistry)
        Type: general
      – SubjectFull: Fluorine
        Type: general
      – SubjectFull: Polyolefins
        Type: general
      – SubjectFull: Ethylene
        Type: general
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      – TitleFull: A DFT-based mechanistic and catalyst design study on the copolymerization of ethylene with polar monomers catalyzed by [N, P]Ti complexes.
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            NameFull: Zhang, Jiaojiao
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            NameFull: Wu, Wenqi
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            NameFull: Cong, Wenwen
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 33
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            – TitleFull: Journal of Polymer Research
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