REVERSIBLE POLYMER NETWORKS: COMBINING DYNAMIC COVALENT BONDS, METALLO-SUPRAMOLECULAR JUNCTIONS AND ENTANGLEMENTS TO CONTROL THEIR VISCOELASTIC PROPERTIES
Event Dates
From: 07/09/2023 12:00
To: 07/09/2023 14:00
External Speaker
Prof. Evelyne van Ruymbeke (Université Catholique de Louvan, Belgium )
Place
FORTH Seminar Room 1

In this presentation, we investigate the dynamics of reversible networks created through the metal-ligand association of entangled building blocks bearing terpyridine ligands. While the nature of the metal ions used to create the metal-ligand associations influence the lifetime of the supramolecular interactions, we show that the dynamics of the reversible networks can also be largely modulated by playing with the ratio between entanglements and stickers density, as well as with the ratio between their association and disentanglement times. When combined with dynamic covalent bonds, double dynamics networks are created, which are able to resist creep while keeping the characteristics of the metallo-supramolecular networks.