Title :

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

Author(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 (UMET) - UMR 8207
Stoffelbach, François [Auteur]
Institut Parisien de Chimie Moléculaire [IPCM]
Hoogenboom, Richard [Auteur]
Universiteit Gent = Ghent University [UGENT]
Woisel, Patrice [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

ACS Materials Letters

Abbreviated title :

ACS Materials Lett.

Volume number :

5

Pages :

235-242

Publisher :

American Chemical Society (ACS)

Publication date :

2022-12-19

ISSN :

2639-4979

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

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

2023-01-05T07:49:21Z
2023-01-05T10:20:33Z