Titre :

Mechanism insights in controlling host–guest (de)complexation by thermoresponsive polymer phase transitions

Auteur(s) :

Guo, Hui [Auteur]
Le Fer, Gaëlle [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Tran, Thi Nga [Auteur]
Malfait, aurélie [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Hourdet, Dominique [Auteur]
Marcellan, Alba [Auteur]
Stoffelbach, François [Auteur]
Lyskawa, Joel [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Hoogenboom, Richard [Auteur]
Woisel, Patrice [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Titre de la revue :

Polymer Chemistry

Nom court de la revue :

Polym. Chem.

Numéro :

13

Pagination :

3742-3749

Éditeur :

Royal Society of Chemistry (RSC)

Date de publication :

2022-03-23

Discipline(s) HAL :

Chimie/Polymères

Résumé en anglais : [en]

The combination of (thermo)responsive polymers with supramolecular chemistry recently allowed the development of adaptative materials based on the reversible regulation of host-guest complexation. The properties of these ...
Lire la suite >The combination of (thermo)responsive polymers with supramolecular chemistry recently allowed the development of adaptative materials based on the reversible regulation of host-guest complexation. The properties of these artificial systems rely on their synthetic design, which requires a perfect understanding of the mechanisms triggering the thermo-induced decomplexation. Despite recent progress, the origins of this phenomenon are still not fully understood. To investigate the effect of phase separation mechanism and thermodynamics on the host-guest (de)complexation behavior, different naphthalene-functionalized (guest) thermoresponsive polymers, including lower critical solution temperature (LCST) and upper critical solution temperature (UCST) polymers, were prepared. The host-guest complexation of the polymers with cyclobis(paraquat-p-phenylene) (Blue Box) was investigated in water at different temperatures. Host-guest complexation was lost upon heating-induced hydrophobic phase separation of complexed guest-functionalized LCST-polymers, while, in contrast, the host-guest complex was retained upon cooling-induced hydrogen bond-driven phase separation of a complexed guest-functionalized UCST polymer. This comparative analysis showed that the mechanism behind the thermoresponsive polymer phase separation is a key factor that dominates the host-guest (de)complexation.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères

Date de dépôt :

2022-09-28T12:28:46Z
2022-10-03T09:19:59Z