title: Light-Powered Self-Healable Metallosupramolecular Soft Actuators.
abstract: Supramolecular functional materials able to respond to external stimuli have several advantages over their classical covalent counterparts. The preparation of soft actuators with the ability to respond to external stimuli in a spatiotemporal fashion, to self-repair, and to show directional motion, is currently one of the most challenging research goals. Herein, we report a series of metallopolymers based on zinc(II)-terpyridine coordination nodes and bearing photoisomerizable diazobenzene units and/or solubilizing luminescent phenylene-ethynylene moieties. These supramolecular polymers act as powerful gelating agents at low critical gelation concentrations. The resulting multiresponsive organogels display light-triggered mechanical actuation and luminescent properties. Furthermore, owing to the presence of dynamic coordinating bonds, they show self-healing abilities.
authors.affiliation: Laboratoire de Chimie et des Biomatériaux Supramoléculaires, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, CNRS UMR 7006, 8 allée Gaspard Monge, 67083, Strasbourg, France.|Département des Matériaux Organiques, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France.
authors.forename: Etienne
authors.initials: E
authors.lastname: Borré
authors.affiliation: Université de Haute-Alsace, ENSCMu-Institut Donnet, Laboratoire de Photochimie et d'Ingénierie Macromoléculaires, 3 rue Alfred Werner, 68093, Mulhouse Cedex, France.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Stumbé
authors.affiliation: Département des Matériaux Organiques, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France. bellemin@unistra.fr.|University of Strasbourg Institute for Advanced Study (USIAS), 5 allée du Général Rouvillois, 67083, Strasbourg, France. bellemin@unistra.fr.
authors.forename: Stéphane
authors.initials: S
authors.lastname: Bellemin-Laponnaz
authors.affiliation: Laboratoire de Chimie et des Biomatériaux Supramoléculaires, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, CNRS UMR 7006, 8 allée Gaspard Monge, 67083, Strasbourg, France. mauro@unistra.fr.|University of Strasbourg Institute for Advanced Study (USIAS), 5 allée du Général Rouvillois, 67083, Strasbourg, France. mauro@unistra.fr.
authors.forename: Matteo
authors.initials: M
authors.lastname: Mauro
keywords: actuators; photoswitches; polymers; responsive materials; supramolecular chemistry