Science University Research Symposium (SURS)
Publication Date
Fall 11-11-2024
College
Sciences and Mathematics, College of
Department
Chemistry and Physics, Department of
SURS Faculty Advisor
Dr. Justin Stace
Presentation Type
Poster Presentation
Abstract
Upon ultraviolet excitation, terbium(III)-ligand complexes exhibit strong yellow-green fluorescence in accordance with the antenna effect. Recent studies in our laboratory show remarkable quenching of the emission signature upon exposure of homoleptic complexes to water or mineral acids. The changes are completely reversible under mild conditions, suggesting possible applications as a chemical sensor. Following the synthesis of [Tb(pydm)3](NO3)3 (pydm = 2,6-pyridine dimethanol), the complex was titrated with HCl and the changing absorption spectra of the complex was monitored through ultraviolet-visible spectroscopy. Further, we have purified and characterized this product through 1H-NMR and 13C-NMR. A deeper understanding of the reactions causing the quenching of the emission upon exposure to water will aid the intelligent design of chemical sensors.
Recommended Citation
Murray, Sean W., "Protonation of Terbium Complexes as a Possible Chemical Sensor" (2024). Science University Research Symposium (SURS). 204.
https://repository.belmont.edu/surs/204
