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.
Angew Chem Int Ed Engl. 2016 Jan 22;55(4):1313-7. doi: 10.1002/anie.201508241. Epub 2015 Dec 17.
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.
超分子功能材料能够对外界刺激做出响应，相比其经典的共价对应物具有多种优势。制备能够在时空上对外界刺激做出响应、自我修复并表现出定向运动的软驱动器，是目前最具挑战性的研究目标之一。在此，我们报告了一系列基于锌（II）-三联吡啶配位节点并带有光致异构化重氮苯单元和/或可溶致发光苯乙炔部分的金属聚合物。这些超分子聚合物在低临界凝胶浓度下充当强大的凝胶剂。所得的多响应性有机凝胶表现出光触发的机械致动和发光性能。此外，由于存在动态配位键，它们还具有自修复能力。
