COA of Formula: C5H3Br2NIn 2020 ,《Self-Healing Metallo-Supramolecular Hydrogel Based on Specific Ni2+ Coordination Interactions of Poly(ethylene glycol) with Bistriazole Pyridine Ligands in the Main Chain》 was published in Macromolecular Rapid Communications. The article was written by Xu, Xiaowen; Jerca, Valentin Victor; Hoogenboom, Richard. The article contains the following contents:
In this study, a supramol. hydrogel formed by incorporating the 2,6-bis(1,2,3-triazol-4-yl)-pyridine (btp) ligand in the backbone of a polymer prepared by copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) “”click”” polyaddition reaction of 2,6-diethynylpyridine and diazido-poly(ethylene glycol) is reported. The hydrogelation is selectively triggered by the addition of Ni2+ ions to aqueous copolymer solutions The gelation and rheol. properties could be tuned by the change of metal to ligand ratio and polymer concentration Interestingly, the hydrogel exhibits a fast (within 2 min) and excellent repeatable autonomic healing capacity without external stimuli. This self-healing behavior may find potential applications for the repairing of metal coatings, in the future. The experimental process involved the reaction of 2,6-Dibromopyridine(cas: 626-05-1COA of Formula: C5H3Br2N)
2,6-Dibromopyridine(cas: 626-05-1) belongs to pyridine. Pyridines, quinolines, and isoquinolines have found a function in almost all aspects of organic chemistry. Pyridine has found use as a solvent, base, ligand, functional group, and molecular scaffold. As structural elements, these moieties are potent electron-deficient groups, metal-directing functionalities, fluorophores, and medicinally important pharmacophores. COA of Formula: C5H3Br2N