A Novel Phosphorescent Iridium(III) Complex Bearing Formamide for Quantitative Fluorine Anion Detection

Fluorine anion plays a critical role for human health, especially for the teeth and the skeletal system, and a deficiency or excess of fluorine anion will result in various diseases. Thus, the accurate and timely detection of fluorine content is of great importance. Herein, a novel and sensitive fluorine probe based on ionic iridium(III) complex using 5-formamide phenanthroline as an ancillary ligand was designed and synthesized rationally. The probe exhibited excellent performance for F− detection in organic solvents. H-bonding between the fluoride and the amide proton was formed, thus changing the photophysical properties of the probe and leading to significant phosphorescence quenching. Nuclear magnetic resonance titration and theoretical calculations were carried out to understand the mechanism in detail. This is the first report of an iridium(III) complex probe for F− detection based on the interaction between formamide and fluorine anion.

Aliovalent fluorine doping and anodization-induced amorphization enable bifunctional catalysts for efficient water splitting

The aliovalent fluorine anion substitution and anodization-induced amorphization strategy significantly improved the HER and simultaneously obtained the optimal OER performance.

Fluorine anion-enriched nickel hydroxyl oxide as an efficient oxygen evolution reaction electrocatalyst

F− anions-enriched Ni hydroxyl oxide (F-NHO) mesocrystalline microspheres were prepared by a facile hydrothermal hydrolysis of a Ni precursor mediated by NH4F.

Interesting fluorine anion water clusters [F−·(H2O)n] in metal complex crystals

Three crystalline complexes containing fluorine anion water cluster were reported. The fluoride anions and water molecules are H-bonded to each other in an alternating fashion within the fluoride–water hybrid cluster, where a fluoride anion plays the important role.