1. Europium metal-organic frameworks: Synthesis, characterization, and application as fluorescence sensors for the detection of Cu 2+ , Ni 2+ cations and T3, T4 hormones.
- Author
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Kabak B and Kendüzler E
- Abstract
The solvothermal approach was used to create a novel Eu metal-organic framework (Eu-MOF) based on 1,4-benzendicarboxylic acid (TPA), 1,10-phenanthroline, and N,N-dimethylformamide (DMF)/H
2 O. Structural analysis of Eu-MOF, Fluorescence spectrometry, Fourier Transform Infrared Spectrometer (FTIR), Scanning Electron Microscopy (SEM), Energy dispersive X-ray (EDX) mapping, Thermo-gravimetric analysis (TGA), and Single Crystal X-Ray Diffraction (PXRD) methods. Using the fluorescence properties of the synthesized Eu-MOF, its use as a fluorescence sensor in the determination of different analytes, such as organic molecules (T3-T4 hormone, ascorbic acid, and glucose) and metal ions (Na+ , K+ , Ca2+ , Mg2+ , Cu2+ , Mn2+ , Hg2+ , Pb2+ , Ni2+ , Cr3+ , Al3+ , Fe3+ ), was investigated. Fluorescence experiments revealed that Cu2+ , Ni2+ cations, as well as T3 and T4 hormones, quenched the fluorescence of Eu-MOF. Turn-off luminescence can be induced by 10 μM Cu2+ , 30 μM Ni2+ cations, 500 nM T3, and 800 nM T4 hormones. Fluorescence quenching efficiencies were calculated for Cu2+ , Ni2+ , T3, and T4 99.7%, 99.6%, 98.7%, and 98.2%, respectively., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023. Published by Elsevier B.V.)- Published
- 2024
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