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. Lights, camera, action! A series of metallopolymers based on ZnII-terpyridine coordination nodes and bearing photoisomerizable and/or luminescent moieties are reported. The polymers undergo gelation at ultralow critical concentrations. The resulting multiresponsive organogels are photoluminescent, display light-triggered mechanical actuation, and can rapidly self-heal.
Light-Powered Self-Healable Metallosupramolecular Soft Actuators
Mauro M.
2016
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. Lights, camera, action! A series of metallopolymers based on ZnII-terpyridine coordination nodes and bearing photoisomerizable and/or luminescent moieties are reported. The polymers undergo gelation at ultralow critical concentrations. The resulting multiresponsive organogels are photoluminescent, display light-triggered mechanical actuation, and can rapidly self-heal.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
