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3D rhombohedral microcrystals metal-organic frameworks for electrochemical and fluorescence sensing of tetracycline

Narasimhappa, P and Varshney, R and Singh, S and Kumar Naik, TS and Ramamurthy, PC (2023) 3D rhombohedral microcrystals metal-organic frameworks for electrochemical and fluorescence sensing of tetracycline. In: Chemosphere, 333 .

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Official URL: https://doi.org/10.1016/j.chemosphere.2023.138977


Zirconium-based metal-organic frameworks (MOF) exhibiting 3D rhombohedral microcrystals were synthesized by the solvothermal method. The structure, morphology, composition, and optical properties of the synthesized MOF were carried out using different spectroscopic, microscopic, and diffraction techniques. Synthesized MOF was rhombohedral in shape and the cage structure of these crystalline molecules was the active binding site of the analyte, tetracycline (TET). The electronic property and size of the cages are chosen such that a specific interaction with TET was observed. Sensing of the analyte was demonstrated by both the electrochemical and fluorescent techniques. The MOF had significant luminescent properties and exhibited excellent electro-catalytic activity due to embedded zirconium metal ions. An electrochemical and fluorescence sensor was fabricated towards TET where TET binds via hydrogen bond to MOF, and causes fluorescence quenching due to the transfer of electrons. Both approaches exhibited high selectivity and good stability in the presence of interfering molecules such as antibiotics, biomolecules, and ions; and showed excellent reliability in tap water and wastewater sample analysis

Item Type: Journal Article
Publication: Chemosphere
Publisher: Elsevier Ltd
Additional Information: The copyright for this article belongs to Elsevier Ltd.
Keywords: Antibiotics; Electrochemical; Fluorescence; Sensing; Tetracycline; UiO-66-NDC
Department/Centre: Division of Interdisciplinary Sciences > Interdisciplinary Centre for Water Research
Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 23 Jun 2023 06:51
Last Modified: 23 Jun 2023 06:51
URI: https://eprints.iisc.ac.in/id/eprint/82024

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