Liuyan Tang, Shanshan Liao, Jinqing Qu
Jun 28, 2019
Citations
0
Influential Citations
28
Citations
Journal
ACS applied materials & interfaces
Abstract
Aiming at the problem that the reported smart optical metallo-hydrogels were limited with poor mechanical properties, we reported here a novel smart optical metallo-hydrogel (Al-hydrogel) with excellent elongation, shape-memory ability, self-healing property, and controllable fluorescence intensity. Al-hydrogel was obtained by the HHPMA-Al3+ and carboxylate-Al3+ coordination after one-pot micellar copolymerization of acrylic acid (AAc), acrylamide (AAm), and hydrophobic arylhydrazone-based ligand (HHPMA). This hydrogel was able to extend up to 5000% of its original length without fracture. Its emission intensity was tunable by OH-/H+ or Zn2+/AAc and increased 500% with 0.1 M OH or Zn2+. Its tunable fluorescence enabled us to repeatedly pattern it. A reversible system, Fe3+-H+, was implemented to control the shape of Al-hydrogel, endowing Al-hydrogel with shape-memory ability. This highly stretchable and multi-functional Al-hydrogel has potential applications in information transmission, wearable devices, and flexible sensors.