Titre :

Covalent Hydrogels with Dual Temperature and Time Memory Function Based on Supramolecular Host–Guest Complexation

Auteur(s) :

De Smet, Lieselot [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Belal, Khaled [Auteur]
Vebr, Aurelien [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Lyskawa, Joel [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Stoffelbach, François [Auteur]
Institut Parisien de Chimie Moléculaire [IPCM]
Hoogenboom, Richard [Auteur]
Universiteit Gent = Ghent University [UGENT]
Woisel, Patrice [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

ACS Materials Letters

Nom court de la revue :

ACS Materials Lett.

Numéro :

5

Pagination :

235-242

Éditeur :

American Chemical Society (ACS)

Date de publication :

2022-12-19

ISSN :

2639-4979

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

Temperature is among the most important measured physical parameters. Despite that numerous polymeric temperature sensors having been reported, none of these systems can record the time that the object was heated to a ...
Lire la suite >Temperature is among the most important measured physical parameters. Despite that numerous polymeric temperature sensors having been reported, none of these systems can record the time that the object was heated to a certain temperature. Here, we report a supramolecular approach for developing a smart polymeric hydrogel capable of measuring the temperature and the duration of the heat exposure. This double memory principle is based on dual kinetic control of the dissociation of cyclobis(paraquat-p-phenylene) tetrachloride (CBPQT4+,4Cl–)-naphthalene host–guest complexes within a thermoresponsive naphthalene functionalized poly(N-isopropylacrylamide) hydrogel. Heating-induced collapse of this LCST polymer hydrogel induces host–guest complex dissociation, followed by the diffusion-controlled release of the free CBPQT4+,4Cl– host into the medium surrounding the hydrogel. This partial host release is governed by the heat exposure time and the heating temperature that controls the extent of dehydration of the hydrogel and, thus, the diffusion rate of the CBPQT4+,4Cl–. Hence, the amount of host released is an indicator for both the heating temperature and the heating time of the hydrogel and can be recorded by determining the reswelling capability of the hydrogel in water. As such, measuring the reswelling capability provides information on how long the hydrogel system was exposed to a certain temperature.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 :

2023-01-05T07:49:21Z
2023-01-05T10:20:33Z
2024-02-08T07:50:12Z