Title :

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

Author(s) :

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

Journal title :

European Polymer Journal

Abbreviated title :

European Polymer Journal

Pages :

112549

Publisher :

Elsevier BV

Publication date :

2023-12-11

ISSN :

0014-3057

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

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