Fluoride is commonly added to drinking water supplies for dental health; however, exposure to elevated fluoride levels can cause significant health problems. Therefore, it is important to develop simple and robust methods for monitoring fluoride in solution. Metal–organic frameworks (MOFs) have been targeted as ideal materials for next-generation sensing technologies, due to their combination of high surface area and chemical tunability. We describe studies demonstrating that porous MOFs with redox-active naphthalene diimide ligands exhibit reversible fluoride-induced reduction to give stable ligand-based radicals. The incorporation of fluoride sensing organic molecules into MOFs allows for the development of solid-state sensor devices that offer advantages relative to solution-phase methods.

Fluoride detection with redox-active metal–organic frameworks

2019 Spring National Meeting

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