Rapid self-healing and anion selectivity in metallosupramolecular gels assisted by fluorine–fluorine interactions

Abstract

Metal complexes from perfluoroalkylamide terpyridine self-assemble into anion selective gels, which manifest self-healing and thermal rearrangement in aqueous dimethyl sulfoxide.

Self-healing, luminescent metallogelation driven by synergistic metallophilic and fluorine–fluorine interactions

“…Metallogels exhibit unique mechanical properties in rheological experiments such as self-healing and thixotropy. 6,50 The mechanical properties of DMSO and DMF gels of complex 1 were studied using dynamic oscillatory rheological measurements on the 1.0% gels. In all experiments, premade gels were used to study the rheological properties.…”

“…Recently, it has been shown that perfluoroalkyl substituted 4-aminophenyl-2,2 0 ,6,2 0 -terpyridine can act as a metallosupramolecular gelator resulting in rapid self-healing and anion selectivity. 50 The FÁ Á ÁF interactions have been shown to affect the rheological and mechanical properties of the metallogels. In this work, we show that Pt(II) complexes of alkyl and fluoroalkyl containing terpyridine derivatives undergo a synergistic PtÁ Á ÁPt and FÁ Á ÁF interaction-driven self-assembly leading to rapid gelation.…”

Infinite coordination polymer networks: metallogelation of aminopyridine conjugates and in situ silver nanoparticle formation

“…Recently, terpyridine ligands containing perfluoroalkyl chains have been reported to exhibit anion selective gelation and rapid self-healing properties. [25] The transition metal containing gels such as palladium have also been shown to improve the catalytic activities. [26] Metallogels containing Ag(I) as metal ions and pyridine derivatives as ligands, represent one of the extensively studied systems.…”

Metallo-Supramolecular Hydrogels from the Copolymers of Acrylic Acid and 4-(2,2′:6′,2″-terpyridin-4′-yl)styrene

“…Metallo-supramolecular hydrogels are gels in which the back bones are crosslinked by metal-ligand coordination. Generally, the introduction of metal ions into polymer networks usually brings a series of new physical and chemical characteristics to the gels such as photoelectric, catalytic and magnetic properties [21,22,23,24]. Liuyan Tang et al obtained metallo-supramolecular hydrogels, based on amphiphilic polymers, with multi-stimuli responsive properties such as pH, competing ligands and reversible redox gel-sol transition with Fe 2+ [25].…”