Mechanism insights in controlling host–guest ...
Document type :
Article dans une revue scientifique: Article original
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Title :
Mechanism insights in controlling host–guest (de)complexation by thermoresponsive polymer phase transitions
Author(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
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
Journal title :
Polymer Chemistry
Abbreviated title :
Polym. Chem.
Volume number :
13
Pages :
3742-3749
Publisher :
Royal Society of Chemistry (RSC)
Publication date :
2022-03-23
HAL domain(s) :
Chimie/Polymères
English abstract : [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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2022-09-28T12:28:46Z
2022-10-03T09:19:59Z
2022-10-03T09:19:59Z
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