Haidong Li, Silvia Voci, Valérie Ravaine and Neso Sojic

J. Phys. Chem. Lett., 2018, 9, 340–345

Luminescent and redox properties of stimuli-responsive hydrogel materials have been modulated by different external stimuli which trigger swelling or collapse of the polymer matrix. There is a very rapid development in the field of such “smart” materials particularly combined with other sensing functionalities. Here, a poly(N-isopropylacrylamide) matrix incorporating covalently-bound phenylboronic acids as a saccharide sensing unit and a redox-active [Ru(bpy)3]2+ luminophore was designed and exhibited multi-stimuli responsive electrochemical and luminescent switching behaviors. Redox activity of the films is reversibly changed by sequential stimuli (fructose and temperature) which control the swelling and the collapse of the films. Finally, electrogenerated chemiluminescence (ECL) is enhanced by a ~16-fold factor during the film collapse induced by the temperature whereas the swelling due to fructose provokes the decrease of the light emission. We demonstrate for the first time that ECL response correlates intrinsically with the swelling ratio and is finely modulated by both stimuli. The multi-stimuli responsive characteristics of such ECL-active hydrogels should find promising applications in biosensing, new luminescent materials, and logic gates in bioelectronic devices.

TOC JPCL2018

Tuning Electrochemiluminescence in Multi-Stimuli Responsive Hydrogel Films
lundi 8 janvier 2018
Haidong Li, Silvia Voci, Valérie Ravaine and Neso Sojic J. Phys. Chem. Lett., 2018, 9, 340–345 Luminescent and redox properties of stimuli-responsive hydrogel materials have been modulated by...
Biredox Ionic Liquids: New Opportunities Toward High Performances Supercapacitors
lundi 3 juillet 2017
C. Bodin,  E. Mourad,  D. Zigah,  S. Le Vot,  S. A Freunberger,  F. Favier,  O. Fontaine Faraday Discussions, 2017, 10.1039/C7FD00174F Nowadays, commercial... Read More...
Highly Ordered Macroporous Electrodes
vendredi 19 mai 2017
A. Kuhn, M. Heim Springer Handbook of Electrochemical Energy, eds. C. Breitkopf, K. Swider-Lyons, Chapter 6 p143-206, Springer Verlag, Berlin 2017, ISBN:978-3-662-46656-8 In this book chapter, we... Read More...
Bienvenue au NSysA !
mardi 7 janvier 2014
L'équipe "NanoSystèmes Analytiques" est l'un des 11 groupes de l'Institut des Sciences Moléculaires, le plus grand laboratoire de recherche de l'Université de Bordeaux dans le domaine de la... Read More...