Coordination adaptable networks: zirconium(IV) carboxylates. - Archive ouverte HAL
Article Dans Une Revue Chemistry - A European Journal Année : 2022

Coordination adaptable networks: zirconium(IV) carboxylates.

Résumé

Vitrimers are 3D “covalent adaptable networks” (CANs) with flow properties thanks to thermally activated associative exchange reactions. The present contribution introduces coordination adaptable networks, or CooANs, that are topologically related to metal-organic frameworks with octahedral Zr 6 clusters as secondary building units in a carboxylic acid-functionalized acrylate-methacrylate copolymer matrix. A series of Zr-CooAN-x materials (x = percent of Zr 6 loading relative to maximum capacity) was synthesized with x = 5, 10, 15, 20, 25, 50 and 100. The mechanical and rheological investigations demonstrate vitrimer-like properties for x up to 50, the crosslink migration being ensured by carboxylate ligand exchange, with relaxation becoming slower as the Zr 6 content is increased. The flow activation energy of Zr-CooAN-10 is 92.9 ± 3.6 kJ mol -1 . Rapid (30 min) hot-press reshaping occurs at temperatures in the 50-100 °C range under a 3-ton pressure and does not significantly alter the material properties.
Fichier principal
Vignette du fichier
Murali, Coordination adaptable networks, 2022.pdf (1.41 Mo) Télécharger le fichier
10.1002chem.202202058.Original Data.zip (1.89 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03739165 , version 1 (27-07-2022)

Identifiants

Citer

Meenu Murali, Dimitri Berne, Christine Joly-Duhamel, Sylvain Caillol, Eric Leclerc, et al.. Coordination adaptable networks: zirconium(IV) carboxylates.. Chemistry - A European Journal, 2022, 28 (61), pp.e202202058. ⟨10.1002/chem.202202058⟩. ⟨hal-03739165⟩
102 Consultations
1796 Téléchargements

Altmetric

Partager

More