Ln‐MOF‐Based Hydrogel Films with Tunable Luminescence and Afterglow Behavior for Visual Detection of Ofloxacin and Anti‐Counterfeiting Applications

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(19)

Published: Jan. 26, 2024

Abstract Highly selective and sensitive quantitative detection of ofloxacin (OFX) at ultralow concentrations in aqueous media development new afterglow materials remains a challenge. Herein, 2D water‐stable lanthanide metal–organic framework (NIIC‐2‐Tb) is proposed, which exhibits high selectivity towards OFX through the luminescence quenching with lowest limit (1.1 × 10 −9 M ) reported to date fast response within 6 s. In addition, luminescent by NIIC‐2‐Tb not affected typical components blood plasma urine. The excellent sensing effect further utilized prepare composite functional carrageenan hydrogel material for rapid meat real time first discovery impressive MOF‐based hydrogels. This study only presents novel Ln‐MOF Ln‐MOF‐based films OFX, but also demonstrates color‐tunable afterglow, expands application anti‐counterfeiting.

Language: Английский

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A 2D Acridine‐Based Covalent Organic Framework for Selective Detection and Efficient Extraction of Gold from Complex Aqueous‐Based Matrices

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(24)

Published: April 12, 2024

Developing candidate materials which possess the ability of both selective detection and efficient capture precious metal gold is highly desirable for environment economy. However, most reported only focus on single function, seriously restricts their practical application as probes or adsorbents. Herein, a two dimensional (2D) acridine-based covalent organic framework (TpDa-COF) prepared via linkage imine bonds adsorption. The synthesized COF can achieve fluorescence colorimetric dual sensing Au

Language: Английский

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A Highly Chemically Robust 3D Interpenetrated MOF Heterogeneous Catalyst for the Synthesis of Hantzsch 1,4‐Dihydropyridines and Drug Molecules

Small, Journal Year: 2024, Volume and Issue: 20(25)

Published: Jan. 8, 2024

Abstract Metal–organic frameworks (MOFs) have attracted immense attention as efficient heterogeneous catalysts over other solid catalysts, however, their chemical environment instability often limits catalytic potential. Herein, utilizing a flexible unexplored tetra‐acid ligand and employing the mixed approach, 3D interpenetrated robust framework is strategically developed, IITKGP‐51 (IITKGP stands for Indian Institute of Technology Kharagpur), which retained its crystallinity wide range pH solution (4–12). Having ample open metal sites (OMSs), explored catalyst in one‐pot Hantzsch condensation reaction, with low loading broad substrates. The synthesis drug molecules remains one most significant emergent areas organic medicinal chemistry. Considering such practical utility, biologically important Nemadipine B Nifedipine (calcium channel protein inhibitor) are synthesized first time by using this fully characterized via SC‐XRD spectroscopic methods. This report inaugurates usage MOF material molecules.

Language: Английский

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Experimental and theoretical elucidation of the luminescence quenching mechanism in highly efficient Hg2+ and sulfadiazine sensing by Ln‐MOF

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 16, 2024

Heavy metal ions and antibiotic contamination have become a major environmental concern worldwide. The development of efficient recognition strategies these pollutants at ultra-low concentrations in aqueous solutions as well the elucidation intrinsic sensing mechanism are challenging tasks. In this work, unique luminescent Ln-MOF materials (NIIC-3-Ln) were assembled by rational ligand design. Among them, NIIC-3-Tb demonstrated highly selective luminescence quenching response toward Hg

Language: Английский

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Continuous tuning of persistent luminescence wavelength by intermediate-phase engineering in inorganic crystals

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 9, 2024

Multicolor tuning of persistent luminescence has been extensively studied by deliberately integrating various luminescent units, known as activators or chromophores, into certain host compounds. However, it remains a formidable challenge to fine-tune the spectra either in organic materials, such small molecules, polymers, metal-organic complexes and carbon dots, doped inorganic crystals. Herein, we present strategy delicately control wavelength engineering sub-bandgap donor-acceptor states series single-phase Ca(Sr)ZnOS The emission peak can be quasi-linearly tuned across broad range (500-630 nm) function Sr/Ca ratio, achieving precision down ~5 nm. Theoretical calculations reveal that fine-tuning stems from constantly lowered donor levels accompanying modified band structure Sr alloying. Besides, our experimental results show these crystals exhibit high initial luminance 5.36 cd m

Language: Английский

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Fluorescence sensing and device fabrication with luminescent metal–organic frameworks

Dalton Transactions, Journal Year: 2023, Volume and Issue: 53(2), P. 394 - 409

Published: Nov. 13, 2023

Recent progress in luminescent metal–organic frameworks for detecting ions, volatile organic compounds, biomolecules and environmental toxins device fabrication has been reviewed.

Language: Английский

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Advancements in rare earth metal-organic frameworks: Harnessing the power of photonics and beyond

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215905 - 215905

Published: May 12, 2024

Language: Английский

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Construction of a Sensitive Fluorescence Sensor for Convenient 1-HP and UA Detection Relied on a Stable Eu-MOF

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(3), P. 1410 - 1420

Published: Jan. 26, 2024

Herein, a new three-dimensional Eu-MOF, [Me2NH2]2[Eu3(mtptc)2(CH3COO)3]·DMA·H2O (1), has been elaborately prepared through the reaction of europium nitrate and symmetric tetra-carboxylate ligand, 5′-methyl-[1,1′:3′,1″-triphenyl]-3,3″,5,5″-tetracarboxylic acid (H4mtptc). Noteworthily, compound 1 represents marked stability covering acid–base in pH range 2–14, thermal maintaining skeleton integrity when heated at 350 °C, solvent some common solvents, air open more than 4 weeks characterized by powder X-ray diffraction (XRD) temperature-dependent XRD analyses. Remarkably, luminescent sensing measurements manifest that is deemed as hopeful fluorescent probe for rapid recognition 1-hydroxypyrene (1-HP) uric (UA) equipped with excellent sensitivity quenching efficiency 99.1% 1-HP 97.4% UA. Besides, performance toward UA possesses super dimethylformamide/H2O solution, N-(2-hydroxyethyl)piperazine-N′-ethanesulfonic buffer human urine.

Language: Английский

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A dual-channel sensing platform for the cross-interference-free detection of tetracycline and copper ion

Talanta, Journal Year: 2024, Volume and Issue: 279, P. 126617 - 126617

Published: July 27, 2024

Language: Английский

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Luminescent metal organic frameworks (LMOFs) and allied composites for the unveiling of organic environmental contaminants (explosive NACs, PAHs and EDCs) sensing through ‘Molecular Recognition’: A chronicle of recent penetration and future modelling

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216085 - 216085

Published: July 26, 2024

Language: Английский

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