Titre :

Tunable UCST behaviour of a hydrophobic dialkoxynaphthalene-functionalized homopolymer based on reversible supramolecular recognition

Auteur(s) :

Guan, Xinran [Auteur]
Universiteit Gent = Ghent University = Université de Gand [UGENT]
Vebr, Aurelien [Auteur]
Universiteit Gent = Ghent University = Université de Gand [UGENT]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Woisel, Patrice [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Hoogenboom, Richard [Auteur]
Universiteit Gent = Ghent University = Université de Gand [UGENT]

Titre de la revue :

European Polymer Journal

Nom court de la revue :

European Polymer Journal

Pagination :

112549

Éditeur :

Elsevier BV

Date de publication :

2023-12-11

ISSN :

0014-3057

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

Thermoresponsive polymers with reversible phase transition are appealing to various applications. Herein, we designed and synthesized a thermosensitive homopolymer bearing hydrophobic dialkoxynaphthalene moieties as polymer ...
Lire la suite >Thermoresponsive polymers with reversible phase transition are appealing to various applications. Herein, we designed and synthesized a thermosensitive homopolymer bearing hydrophobic dialkoxynaphthalene moieties as polymer side chains that revealed UCST behaviour in pure ethanol and ethanol/water mixtures. It is reported that the complexation with the tetracationic macrocycle cyclobis(paraquat-p-phenylene) (CBPQT4+) host is strongly dependent on the degree of complexation due to steric hindrance and charge repulsion. Moreover, it was found that the cloud-point temperatures (TCP) of the homopolymer could be modulated by host–guest complexation with CBPQT4+ in alcohol-water solvent mixtures up to 6 equivalents of the host. When heated above the clearance-point temperatures, the homopolymer dissolves, but the host–guest interactions become unstable and are disrupted due to the effect of the solvent and the higher temperature. Subsequent cooling led to the collapse of the homopolymer, together with the reformation of the host–guest complexes resulting in a purple opaque solution. The tunable UCST approach may enable practical applications in the biomedical field or interactive smart materials.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 :

2023-12-19T06:39:24Z
2023-12-20T13:31:09Z
2023-12-20T13:32:19Z