PCM-22 is a new metal-organic framework material comprised of triphenylphosphine and Ln3+ ions (Ln = Pr-Yb), which exhibits solid-state luminescence at room temperature. Mixed-metal versions of PCM-22 that contain controlled amounts of Eu3+, Gd3+ and Tb3+ function as highly sensitive, broad-scope solid-state sensors that can rapidly identify unknown solvents by providing a unique ‘8-factor’ fingerprint. The sensors allow for immediate solvent identification via color changes that are obvious to the naked eye, and also permit quantitative chemical analysis by uncomplicated spectrophotometry. These same materials achieve quantitative detection of H2O in D2O between 10-120,000 ppm. The detection of trace H2O is also demonstrated in a range of common solvents including those incompatible with conventional laboratory titration methods.

Moelcular discrimination and quantitative detection by luminescent lanthanide-based microporous sensors

255th National Meeting (2018)

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