Title :

A water-soluble supramolecular polymeric dual sensor for temperature and pH with an associated direct visible readout

Author(s) :

Malfait, aurélie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Coumes, Fanny [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Fournier, David [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Unité Matériaux et Transformations - UMR 8207 [UMET]
Cooke, Graeme [Auteur]
University of Glasgow
Woisel, Patrice [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Journal title :

European Polymer Journal

Volume number :

69

Pages :

552-558

Publication date :

2015

English keyword(s) :

RAFT process
Host-guest interaction
Supramolecular chemistry
Dual sensor
Multi stimuli responsive polymer
Visible readout

HAL domain(s) :

Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

We report a multi-stimuli responsive polymeric sensor consisting of a pseudorotaxane-like architecture fabricated from a 1,5-diaminonaphthalene end-functionalized poly(N-isopropyl)acrylamide (Napht-N-PNIPAM) and ...
Show more >We report a multi-stimuli responsive polymeric sensor consisting of a pseudorotaxane-like architecture fabricated from a 1,5-diaminonaphthalene end-functionalized poly(N-isopropyl)acrylamide (Napht-N-PNIPAM) and cyclobis(paraquat-p-phenylene) (CBPQT4+, 4Cl−). The coloured nature of the poly-pseudorotaxane provides a sensor for temperature and pH in water with an associated visible readout. To create this dual responsive polymeric sensor, a new chain transfer agent (Napht-N-CTA) incorporating a pH-responsive 1,5-diaminonaphthalene unit was synthesized and used for the polymerization of N-isopropylacrylamide via Reversible Addition-Fragmentation Chain Transfer (RAFT). The ability of Napht-N-PNIPAM to form a pseudorotaxane architecture with CBPQT4+, 4Cl− in aqueous media was studied by means of UV–Vis, NMR (1H, 2D-ROESY, DOSY) and ITC experiments. Interestingly, the pseudorotaxane architecture can be reversibly dissociated upon either heating the sample above its cloud point or protonating the nitrogen atoms of the 1,5-diaminonaphthalene-based guest unit by adjusting the pH to around 1. In both cases a dramatic colour change occurs from intense blue-green to colourless.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Assemblages multistimulables de polymères dans l'eau

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2019-05-16T16:45:12Z
2020-04-16T14:28:44Z