Copper metallic nanoclusters encapsulated within zinc-based metal organic framework for optical sensing of ciprofloxacin in aqueous solutions

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-06 DOI:10.1016/j.jphotochem.2024.116259

Shaghayegh Kheirkhahnia, Susan Sadeghi

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引用次数: 0

Abstract

In this research, copper metallic nanoclusters protected by histidine (CuNCs@His) were synthesized and combined with zinc-based metal–organic framework (MOF-5) to form a composite material (CuNCs@His/MOF-5). Physicochemical properties of the synthesized nanocomposite were analyzed by UV–Vis spectrophotometry, Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDAX), and elemental mapping (MAP) analysis. The resulting nanocomposite showed an emission wavelength at 438 nm under excitation of 345 nm. The integrated nanostructure was used as a fluorescent probe for the detection of ciprofloxacin (CIP) antibiotic based on the “turn-on” fluorescence mode. Factors affecting CIP determination such as sample pH, buffer type, incubation time, amount of the modified metal–organic framework (CuNCs@His/MOF-5), and the analyte concentration were investigated. Under the optimal conditions, the calibration curve for CIP was linear in the concentration range of 0.01–0.20 µg mL⁻¹ with a limit of detection and relative standard deviation of 0.01 µg mL⁻¹ and 2.6 %, respectively. Also, the efficiency of the method was investigated in the presence of interfering compounds. Finally, the proposed method was successfully applied to determine CIP in water and urine samples with recovery percentage ranging from 90.4 % to 102.8 %.

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.