Lanthanide (Ln) ions are well-known for their photophysical properties. Their well-defined emission peaks and significantly long luminescence decay times render Ln ions as effective components of highly sensitive bioassay agents and sensors. Given these qualities, chelated Ln ions may prove useful sensing anions in aqueous solutions via the measurement of displaced quenching water molecules, which result in an increase in luminescence intensity. In our study, we use a tripodal, TREN-capped pyridine/imine ligand complexed with europium(III). This Eu-TRIPy complex has previously been characterized with FT-IR and luminescence measurements. In this study, we completed additional experiments with Eu-TRIPy to further explore its emissive properties. In past work, luminescence intensity in the presence of individual anions such as oxalate, cyanide and phosphate at varying concentrations was measured. We are now adding to these findings by investigating how different anion mixtures affect binding specificity and potential sensor applications. By furthering the characterization of the Eu-TRIPy complex, we can continue to evaluate its potential as an anion sensor for both aqueous solutions containing individual anions and mixtures of relevant anions.

Development of a tripodal iminopyridine based europium(III) complex for anion sensor applications

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.