On–Off Ratiometric Fluorescence Europium(III) Metal–Organic Framework for Quantitative Detection of the Inflammatory Marker Neopterin

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(10), P. 4697 - 4706

Published: Feb. 26, 2024

Benefiting from the unique photoluminescence behavior of lanthanide(III) ions and organic ligands, a metal-organic framework (Ln-MOF) material can simultaneously demonstrate cations molecules endow its superior applications fluorescence sensing behaviors. Herein, we present europium(III) MOF {[Eu

Language: Английский

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Two 2D Metal–Organic Frameworks Based on Purine Carboxylic Acid Ligands for Photocatalytic Oxidation of Sulfides and CO₂ Chemical Fixation

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(20), P. 9109 - 9118

Published: May 7, 2024

Two two-dimensional (2D) layered metal-organic frameworks (MOFs), namely, {[Yb(

Language: Английский

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Regulating the Energy Level of a Ratiometric Luminescent Europium(III) Metal–Organic Framework Sensor with Smartphone Assistance for Real-Time and Visual Detection of Carcinoid Biomarker

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Regulating the energy level of a lanthanide (III) metal–organic framework (Ln-MOF) via an "antenna effect" is effective strategy for achieving ratiometric luminescent dynamics carcinoid biomarker sensing application. Herein, we present europium-based MOF material {[Eu(BPDC)(μ3–OH)(H2O)2]·2.5H2O}n (Eu-MOF, H2BPDC = 2,2′-bipyridine-4,4′-dicarboxylic acid and DMF N,N-dimethylformamide), incorporating tetranuclear cubane-like [Eu4(μ3–OH)4(COO)4]4– cluster cores, 5-hydroxyindole-3-acetic (5-HIAA) detection through influence Eu3+ ions sensitized by ligands as well 5-HIAA. Luminescence titration experiments indicate Eu-MOF can demonstrate simultaneous luminescence emission signals cations 5-HIAA, resulting in on–off 5-HIAA response to concentrations demonstrating superior stability excellent performance such low limit (LOD 37.16 nM), high selectivity (Ksv 2.39 × 104 M–1), fast (≤1 min), attractive recyclability (≥five times). Derived from contribution competitive absorption coordination interactions between exhibits visually observable color change red purple naked eye illuminated ultraviolet light, confirmed fabrication portable hydrogels. More importantly, smartphone assistance based on RGB chromaticity analysis has been developed intelligent Eu-MOF@PVA Eu-MOF@PU films have proposed real-time visual thereby enhancing practical applicability quantitative trace

Language: Английский

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Achieving On–Off Ratiometric Luminescence Dynamics in a Nanoporous Eu(III) Metal–Organic Framework for Neopterin Detection

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(15), P. 17748 - 17758

Published: July 30, 2024

Thanks to the superior photoluminescence performance of lanthanide(III) ions sensitized by organic ligands via an "antenna effect" and host–guest interactions between a MOF material targeted analytes, nanoporous can achieve luminescence dynamics through influence thus endowing with ratiometric sensing application. Consequently, 3D Eu(III) based material, {[Eu(BPDC)(μ3–OH)(H2O)]·H2O·DMF}n (Eu-MOF, 2,2′-bipyridine-4,4′-dicarboxylic acid = H2BPDC), assembled H2BPDC ligand Eu3+ for achieving on–off inflammatory marker neopterin (Neo) detection, has been fabricated. The Eu-MOF is consist 1D Eu(μ3–OH) chains, which could further be connected deprotonated build framework, showing nanosized aperture ca. 12.6 Å × along a-direction. titration experiments demonstrate that exhibit simultaneous behavior Neo, regulating interactions. More importantly, visible color change observation from red bluish violet naked eyes in response concentrations Neo indicator facile achieved luminescent test strips portable hydrogels. A combination competitive absorption contribute confirmed UV–vis spectral overlap experiment density functional theory calculations.

Language: Английский

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Stable Europium(III) Metal–Organic Framework Fluorescence Probe for Intelligent Visualization Detection of Gossypol and Nitrofuran Antibiotics in Real Samples

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(32), P. 15134 - 15143

Published: July 29, 2024

Gossypol (Gsp) and antibiotics present in water bodies become organic pollutants that are harmful to human health the ecological environment. Accurate effective detection of these has far-reaching significance many fields. A new three-dimensional metal-organic framework (MOF), {[Eu

Language: Английский

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Regulating Ratiometric Fluorescence of Nanoporous Dual-Centered Lanthanide Metal–Organic Frameworks for Quantitative and Visual Detection of Anthrax Biomarkers

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 25805 - 25814

Published: Oct. 31, 2024

Developing a sensitive, rapid, and accurate method for the quantitative visual detection of anthrax biomarker dipicolinic acid (DPA) is great significance to human health public safety. Due presence "antenna effect", sensitization Eu3+ ions Tb3+ can be facilely achieved by organic ligands with different degrees exhibits excellent luminescence behavior ions, enabling dual-centered lanthanide metal–organic framework (Ln-MOF) promising ratiometric fluorescence sensor trace DPA determination. Herein, we present series nanoporous frameworks, denoted as {EuxTb1–x(BPDC)(μ3-OH)(H2O)·H2O·DMF}n (EuxTb1–x-BPDC) assembled 2,2′-bipyridine-4,4′-dicarboxylic (H2BPDC), sensors DPA. Among these, Eu0.5Tb0.5-BPDC stands out optimal material, exhibiting superior performance quantitative, visual, detection. Moreover, demonstrates stability in aqueous solution capability remarkable sensitivity (limit (LOD) = 0.608 μM), selectivity (Ksv 6.46 × 106 M–1), anti-interference, impressive reusability. contribution blocked energy transfer between mixed-lanthanide competitive absorption DPA, color change observation from red greenish-yellow under illumination ultraviolet light. Most importantly, colorimetric test strips portable hydrogels, facilitating practical application

Language: Английский

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Asymmetrical Modification of Cyclopentadienyl Cobalt in Eu-MOF for C₂H₂/CO₂ Separation

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(36), P. 16605 - 16609

Published: Aug. 28, 2024

The development of novel adsorption materials is significance for the efficient and low-energy purification acetylene (C2H2). Emerging metal–organic framework (MOF) adsorbents demonstrate great application prospects in field gas separation. Herein, we synthesized a Eu-MOF asymmetrically modified with cyclopentadienyl cobalt exhibiting two different types cages, denoted as UPC-119. Adsorption isotherms dynamic breakthrough curves confirm its potential C2H2/CO2 separation, which further evidenced by theoretical simulations. high capacity low enthalpy render UPC-119 promising adsorbent separation ease regeneration.

Language: Английский

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Evaluation of the Potential of a Ratiometric Fluorescence Sensor for Sensitively Recognizing 1-Hydroxypyrene in Real Urine Samples Based on a Stable Zn-MOF

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

In the work, a 3D Zn-based MOF, [CH3(NH2)2][Zn2(obdb)(OH)]·DMF (compound 1) has been formed successfully through self-assembly of Zn(II) ion and organic linker H4obdb (4',4‴-oxybis[1,1'-biphenyl]-3,5-dicarboxylic acid, high-symmetrical tetra-carboxylate ligand) under solvothermal conditions. structure compound 1, Zn symmetry-generated ones constitute tetra-nuclear cluster [Zn4(μ2-COO)8(μ3-OH)2], then by coordination clusters linkers, stair-like framework containing 1D rectangular channel with porosity 47.3% is generated. Interestingly, 1 confirmed to possess striking air pH stability. Noteworthily, results detecting studies certify that can serve as prospective ratiometric fluorescence sensor for selectively recognizing 1-hydroxypyrene (1-HP) among diverse urine components promising probe Asp from other 11 kinds amino acids depended on "turn-off" effects decorated high quenching efficiencies (97.5% 1-HP 94.3% Asp) outstanding sensitivity Ksv values 1.84 × 105 M-1 1.41 104 in DMF-H2O binary system. Amazingly, sensing capacities maintain similar levels fresh human compared those system, giving 5.79 1.72 Asp.

Language: Английский

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Colorimetric detection of thiocyanate via inhibiting the peroxidase-like activity of Fe-modified porphyrinic metal-organic framework

Journal of Solid State Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 125345 - 125345

Published: March 1, 2025

Language: Английский

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In Situ Coordination-Catalyzed o-Vanillin Underwent a One-Pot Tandem Reaction to Construct Complex Chiral Tetrameric Isomer-Based Hexanuclear Clusters

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

In this work, Dy(NO3)3·6H2O and o-vanillin reacted under "one-pot" conditions, achieving for the first time four efficient condensations of obtaining a pair chiral hexanuclear clusters R/S-Dy6. The Dy(III) ions in structure R/S-Dy6 are arranged planar quadrilateral with ion derived from each upper lower ends, forming shape similar to "chair". complex ligands H4LR1 H4LS1 were obtained simple through multistep tandem reaction. Their formation process involved series reaction steps, including free radical coupling form pinacol an situ o-vanillin. Magnetic studies show that have magnetic anisotropy and/or low excited states. addition, has outstanding ability produce reactive oxygen species low-power light irradiation shows excellent photodynamic sterilization. inhibition zones against Escherichia coli about 2.09 2.99 cm, Staphylococcus aureus 2.51 2.93 respectively. This work not only provides vivid example synthesis organic products but also promotes progress lanthanide clusters' crystal engineering.

Language: Английский

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