The luminescent properties of europium thenoyltriflouroacetone ccomplexes with 2-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline based ligands

WCU Author/Contributor (non-WCU co-authors, if there are any, appear on document)
Paul Jacob Venturo (Creator)
Institution
Western Carolina University (WCU )
Web Site: http://library.wcu.edu/
Advisor
Brian Dinkelmeyer

Abstract: The goal of this work is to synthesize a series of europium complexes based on 2-phenyl-1Himidazo[4,5-f][1,10]phenanthroline ligand structure and optimize the luminescent quantum yield and fluorescence of lanthanide complexes and to gain an understanding of how the structure ofthe coordinating ligand influences the lanthanide luminescence. Lanthanide complexes have gone through some interesting developments in the past few years and the applications of these complexes continue to expand. The applications of their luminescent and spectroscopic properties can be found in fields such as chemistry, optics, engineering, and biomedical imaging. Many of these properties are caused by the unique electron configuration of the lanthanide ions. The purpose of this research is to observe and measure the fluorescent properties of europium complexes containing 2-phenyl-1H-imidazo[4,5-f [1,10]phenanthroline (PIP) based ligands. Inthis project, the PIP ligands are first synthesized then reacted with Eu(TTA)3 (H2O)2 to form europium PIP complexes. The ligands were characterized using FT-IR, 1H NMR, 13C NMR, UV-Vis, and Fluorescence spectroscopy. The luminescent quantum yields of the complexes werecalculated using Eu(TTA)3 (H2O)2 as the standard. Density functional theory (DFT) calculationswere carried out throughout the process to evaluate the structural and spectroscopic properties of both the ligands and their respected complexes. From the results, the only trend that was observed was between the ?EISC and the luminescent quantum yield where a ?EISC between0.73-0.76 eV gave higher quantum yield values.

Additional Information

Publication
Thesis
Language: English
Date: 2020
Keywords
DFT, Europium, Quantum Yield

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