Structure and Properties of Metallosupramolecular ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
Structure and Properties of Metallosupramolecular Polymers with a Nitrogen-Based Bidentate Ligand
Auteur(s) :
Marx, Franziska [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Beccard, Malte [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Ianiro, Alessandro [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Dodero, Andrea [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Neumann, Laura N. [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Weder, Christoph [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Schrettl, Stephen [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Université de Fribourg = University of Fribourg [UNIFR]
Beccard, Malte [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Ianiro, Alessandro [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Dodero, Andrea [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Neumann, Laura N. [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Weder, Christoph [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Schrettl, Stephen [Auteur]
Université de Fribourg = University of Fribourg [UNIFR]
Titre de la revue :
Macromolecules
Nom court de la revue :
Macromolecules
Numéro :
56
Pagination :
7320-7331
Éditeur :
American Chemical Society (ACS)
Date de publication :
2023-09-07
Discipline(s) HAL :
Chimie/Matériaux
Résumé en anglais : [en]
The solid-state properties of supramolecular polymers that feature metal–ligand (ML) complexes are, in addition to the general nature of the monomer, significantly affected by the choice of ligand and metal salt. Indeed, ...
Lire la suite >The solid-state properties of supramolecular polymers that feature metal–ligand (ML) complexes are, in addition to the general nature of the monomer, significantly affected by the choice of ligand and metal salt. Indeed, the variation of these components can be used to alter the structural, thermal, mechanical, and viscoelastic properties over a wide ranges. Moreover, the dynamic nature of certain ML complexes can render the resulting metallosupramolecular polymers (MSPs) stimuli-responsive, enabling functions such as healing, reversible adhesion, and mechanotransduction. We here report MSPs based on the bidentate ligand 6-(1′-methylbenzimidazolyl) pyridine (MBP), which is easily accessible and forms threefold coordination complexes with various transition metal ions. Thus, a poly(ethylene-co-butylene) telechelic was end-functionalized with two MBP ligands and the resulting macromonomer was assembled with the triflate salts of either Zn2+, Fe2+, or Ni2+. All three MSPs microphase separate and adopt, depending on the metal ion and thermal history, lamellar or hexagonal morphologies with crystalline domains formed by the ML complexes. The melting transitions are well below 200 °C, and this permits facile (re)processing. Furthermore, defects can be readily and fully healed upon exposure to UV-light. While the three MSPs display similar moduli in the rubbery regime, their extensibility and tensile strength depend on the nature of the ML complex, which similarly affects the long-range order and dynamic behavior.Lire moins >
Lire la suite >The solid-state properties of supramolecular polymers that feature metal–ligand (ML) complexes are, in addition to the general nature of the monomer, significantly affected by the choice of ligand and metal salt. Indeed, the variation of these components can be used to alter the structural, thermal, mechanical, and viscoelastic properties over a wide ranges. Moreover, the dynamic nature of certain ML complexes can render the resulting metallosupramolecular polymers (MSPs) stimuli-responsive, enabling functions such as healing, reversible adhesion, and mechanotransduction. We here report MSPs based on the bidentate ligand 6-(1′-methylbenzimidazolyl) pyridine (MBP), which is easily accessible and forms threefold coordination complexes with various transition metal ions. Thus, a poly(ethylene-co-butylene) telechelic was end-functionalized with two MBP ligands and the resulting macromonomer was assembled with the triflate salts of either Zn2+, Fe2+, or Ni2+. All three MSPs microphase separate and adopt, depending on the metal ion and thermal history, lamellar or hexagonal morphologies with crystalline domains formed by the ML complexes. The melting transitions are well below 200 °C, and this permits facile (re)processing. Furthermore, defects can be readily and fully healed upon exposure to UV-light. While the three MSPs display similar moduli in the rubbery regime, their extensibility and tensile strength depend on the nature of the ML complex, which similarly affects the long-range order and dynamic behavior.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Équipe(s) de recherche :
Ingénierie des Systèmes Polymères
Date de dépôt :
2024-01-10T14:59:41Z
2024-01-24T12:09:24Z
2024-01-24T12:09:24Z
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- Marx et al. - 2023 - Structure and Properties of Metallosupramolecular .pdf
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