| 초록 |
Self-healing system has been widely studied by many researchers because of their potential usages in various medical, display, drug delivery systems and so on. Therefore, various polymers have been designed and synthesized, which can be reversibly assembled and disassembled via covalent and noncovalent bonds. Here, we fabricated a self-healing gel system without external stimuli. Copolymers from norbornene-based monomers were prepared through the ring opening metathesis polymerization (ROMP), and then supramolecular gels were fabricated by metal (Ni2+, Co2+, Fe2+) -ligand interactions. These gels showed self-healing properties within a few minutes after cutting without any other additional external stimuli. Supramolecular gels were able to be disassembled by ceric ammonium nitrate (CAN) which can oxidize Fe3+, which cannot bind to the terpyridine ligand. Also, the photoactive properties of the supramolecular gel were observed through benzylamine photo-oxidative coupling reaction. |
