Background: In recent years, fluorescence sensing technology by rare-earth metal-organic frameworks (Ln-MOFs) as probes has garnered extensive attention in the domains of environmental quality testing, pollutant reduction, and biomolecule analysis because of its non-disruptive nature, rapid response, and high sensitivity. The research on aided magnetic controlling has further advanced the industrial value of Ln-MOFs, but the accomplishment of high specificity and rapid recovery still is a challenge for the magnetic Ln-MOFs in practical applications.
Results: A magnetic Ln-MOFs, FeO@Eu(BDC), doped with FeO using HBDC as the ligand and Eu as the central ion through co-precipitation, has been successfully synthesized. It emits red fluorescence when exposed to UV excitation and allows quick separation via magnetic. In sensing assays, FeO@Eu(BDC) exhibited fluorescence quenching (FQ) for six classes of antibiotics like nitroimidazole, whereas fluorescence intensity enhancement accompanied by color conversion (FE-CT) were shown for fluoroquinolone antibiotics. The differentiated fluorescence responses are attributed to the internal filtering effect and the energy transfer between the probe and the antibiotic. FeO@Eu(BDC) have detection limits as low as 10 M to metronidazole with FQ and levofloxacin with FE-CT in both aqueous and urinary solutions, and can be visually identified by fluorescence intensity or color as an optical signal.
Significance And Novelty: In this paper, a novel synthesis scheme for magnetic Ln-MOFs was proposed, and the prepared FeO@Eu(BDC) was applied as a fluorescent probe with high sensitivity for detecting specific antibiotics. According to the variety of antibiotic, the probe can perform different fluorescent responses and then achieved classified detection by naked eyes. Due to ideal magnetic and porous properties, the FeO@Eu(BDC) also realized rapid removal and recovery of analytes. This study provided a convenient and efficient strategy for on-site testing and classification of antibiotics, and advanced the practical application of Ln-MOFs.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.aca.2025.343708 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Classified detection of antibiotics using FeO@Eu(BDC) as a fluorescent probe.
Anal Chim Acta
March 2025
Department of Chemistry, Beijing Technology and Business University, Beijing, China; Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China. Electronic address:
Background: In recent years, fluorescence sensing technology by rare-earth metal-organic frameworks (Ln-MOFs) as probes has garnered extensive attention in the domains of environmental quality testing, pollutant reduction, and biomolecule analysis because of its non-disruptive nature, rapid response, and high sensitivity. The research on aided magnetic controlling has further advanced the industrial value of Ln-MOFs, but the accomplishment of high specificity and rapid recovery still is a challenge for the magnetic Ln-MOFs in practical applications.
Results: A magnetic Ln-MOFs, FeO@Eu(BDC), doped with FeO using HBDC as the ligand and Eu as the central ion through co-precipitation, has been successfully synthesized.
Relaxometric properties and biocompatibility of a novel nanostructured fluorinated gadolinium metal-organic framework.
Dalton Trans
October 2024
Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via Elce di Sotto n 8, 06123, Perugia, Italy.
A novel Gd-MOF based on tetrafluoro-terephthalic acid has been synthesized and its structure has been solved using X-ray single crystal diffraction data. The compound, with the formula [Gd(FBDC)·HO]·DMF, is isostructural with other Ln-MOFs based on the same ligand and has been recently reported. Its crystals were also reduced to nanometer size by employing acetic acid or cetyltrimethylammonium bromide (CTAB) as a modulator.
View Article and Find Full Text PDFHeterogeneous Acetalization of Benzaldehyde over Lanthanide Oxalate Metal-Organic Frameworks.
ACS Omega
September 2024
Department of Chemistry, UAE University, P.O. Box 15551, Al-Ain, UAE.
Lanthanides (Ln) from the f-blocks of the periodic table have gained significant interest due to their unique characteristics, including magnetism, photoluminescence, and catalysis. In this study, a series of lanthanide metal-organic frameworks [Ln-MOFs, Ln = Eu(III), Tb(III), Nd(III), Er(III), Ho(III), Gd(III), Pr(III), and Dy(III)] were constructed based on oxalic acid and lanthanide metals as the building blocks. These MOFs were comprehensively characterized using various analytical and spectroscopic techniques, including powder X-ray diffraction, Fourier-transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, energy-dispersive X-ray spectroscopy, nitrogen adsorption-desorption, and Raman spectroscopy.
View Article and Find Full Text PDFPhotochromic Ln-MOFs: A Platform for Metal-Photoswitch Cooperativity.
Inorg Chem
July 2024
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States.
Optoelectronic devices based on lanthanide-containing materials are an emergent area of research due to imminent interest in a new generation of diode materials, optical and magnetic sensors, and ratiometric thermometers. Tailoring material properties through the employment of photo- or thermochromic moieties is a powerful approach that requires a deep fundamental understanding of possible cooperativity between lanthanide-based metal centers and integrated switchable units. In this work, we probe this concept through the synthesis, structural analysis, and spectroscopic characterization of novel photochromic lanthanide-based metal-organic materials containing noncoordinatively integrated photoresponsive 4,4'-azopyridine between lanthanide-based metal centers.
View Article and Find Full Text PDFA Paramagnetic Compass Based on Lanthanide Metal-Organic Framework.
Angew Chem Int Ed Engl
August 2023
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, China.
Macroscopic compass-like magnetic alignment at low magnetic fields is natural for ferromagnetic materials but is seldomly observed in paramagnetic materials. Herein, we report a "paramagnetic compass" that magnetically aligns under ∼mT fields based on the single-crystalline framework constructed by lanthanide ions and organic ligands (Ln-MOF). The magnetic alignment is attributed to the Ln-MOF's strong macroscopic anisotropy, where the highly-ordered structure allows the Ln-ions' molecular anisotropy to be summed according to the crystal symmetry.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!