Kinetic control and molecular design of norbornene dicarboximide polymers bearing triazine pendants via living ROMP.
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| Title: | Kinetic control and molecular design of norbornene dicarboximide polymers bearing triazine pendants via living ROMP. |
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| Authors: | Abdu, Mohamed E.1,2 (AUTHOR), Radwan, Mohammed F.1,3 (AUTHOR), Spring, Andrew M.1 (AUTHOR) spring@cm.kyushu-u.ac.jp, Basyouni, Mahmoud Z.1,4,5 (AUTHOR) mahmoud.basiouny@fsc.bu.edu.eg |
| Source: | Journal of Molecular Structure. Aug2026, Vol. 1368, pN.PAG-N.PAG. 1p. |
| Subjects: | Polymerization kinetics, Triazines, Molecular shapes, Optical properties, Polymers, Living polymerization, Thermal properties, Monomers |
| Abstract: | • Two NDI monomers with carbazole and triazine pendants were designed and synthesized. • Structures were confirmed by 1D and 2D NMR spectroscopy. • ROMP kinetics were monitored by ¹H NMR, showing distinct polymerization behavior. • Polymers showed tunable Mn (6.45–15.2 kDa) with narrow PDIs (1.04–1.67). • Optical properties and thermal properties Tg (98–156 °C) were tuned via monomer design. The kinetics, optical, and thermal properties of NDI based polymers synthesized via ROMP were systematically investigated. Two functional NDI monomers, CAH-NDI and DCT-NDI, were polymerized using Grubbs second generation catalyst. Real-time 1H NMR monitoring revealed distinct kinetic profiles: for P1, the norbornene double-bond signals disappeared within 20 min, with Mn increasing to 6.45 kDa at that time, whereas P2 polymerization was completed within 3 min, indicating higher monomer reactivity. GPC confirmed controlled molecular weight growth with PDIs ranging from 1.04 to 1.67. The polymers exhibited absorption maxima (λ max) between 375 and 435 nm and a glass transition temperature (Tg) range of 98 to 156 °C, depending on the backbone composition and side-chain substituents. These results demonstrate how monomer structure and composition govern ROMP kinetics, optical absorption, and thermal stability of NDI-based polymers. [Display omitted] [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Molecular Structure is the property of Elsevier B.V. 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.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193590766 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Kinetic control and molecular design of norbornene dicarboximide polymers bearing triazine pendants via living ROMP. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Abdu%2C+Mohamed+E%2E%22">Abdu, Mohamed E.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Radwan%2C+Mohammed+F%2E%22">Radwan, Mohammed F.</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Spring%2C+Andrew+M%2E%22">Spring, Andrew M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> spring@cm.kyushu-u.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Basyouni%2C+Mahmoud+Z%2E%22">Basyouni, Mahmoud Z.</searchLink><relatesTo>1,4,5</relatesTo> (AUTHOR)<i> mahmoud.basiouny@fsc.bu.edu.eg</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Molecular+Structure%22">Journal of Molecular Structure</searchLink>. Aug2026, Vol. 1368, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Polymerization+kinetics%22">Polymerization kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Triazines%22">Triazines</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+shapes%22">Molecular shapes</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+properties%22">Optical properties</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Living+polymerization%22">Living polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink><br /><searchLink fieldCode="DE" term="%22Monomers%22">Monomers</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • Two NDI monomers with carbazole and triazine pendants were designed and synthesized. • Structures were confirmed by 1D and 2D NMR spectroscopy. • ROMP kinetics were monitored by ¹H NMR, showing distinct polymerization behavior. • Polymers showed tunable Mn (6.45–15.2 kDa) with narrow PDIs (1.04–1.67). • Optical properties and thermal properties Tg (98–156 °C) were tuned via monomer design. The kinetics, optical, and thermal properties of NDI based polymers synthesized via ROMP were systematically investigated. Two functional NDI monomers, CAH-NDI and DCT-NDI, were polymerized using Grubbs second generation catalyst. Real-time 1H NMR monitoring revealed distinct kinetic profiles: for P1, the norbornene double-bond signals disappeared within 20 min, with Mn increasing to 6.45 kDa at that time, whereas P2 polymerization was completed within 3 min, indicating higher monomer reactivity. GPC confirmed controlled molecular weight growth with PDIs ranging from 1.04 to 1.67. The polymers exhibited absorption maxima (λ max) between 375 and 435 nm and a glass transition temperature (Tg) range of 98 to 156 °C, depending on the backbone composition and side-chain substituents. These results demonstrate how monomer structure and composition govern ROMP kinetics, optical absorption, and thermal stability of NDI-based polymers. [Display omitted] [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Molecular Structure is the property of Elsevier B.V. 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: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.molstruc.2026.146267 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Polymerization kinetics Type: general – SubjectFull: Triazines Type: general – SubjectFull: Molecular shapes Type: general – SubjectFull: Optical properties Type: general – SubjectFull: Polymers Type: general – SubjectFull: Living polymerization Type: general – SubjectFull: Thermal properties Type: general – SubjectFull: Monomers Type: general Titles: – TitleFull: Kinetic control and molecular design of norbornene dicarboximide polymers bearing triazine pendants via living ROMP. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Abdu, Mohamed E. – PersonEntity: Name: NameFull: Radwan, Mohammed F. – PersonEntity: Name: NameFull: Spring, Andrew M. – PersonEntity: Name: NameFull: Basyouni, Mahmoud Z. IsPartOfRelationships: – BibEntity: Dates: – D: 25 M: 08 Text: Aug2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00222860 Numbering: – Type: volume Value: 1368 Titles: – TitleFull: Journal of Molecular Structure Type: main |
| ResultId | 1 |
