Postsynthetic Modification of Amine-Functionalized MIL-101(Cr) Metal–Organic Frameworks with an EDTA–Zn(II) Complex as an Effective Heterogeneous Catalyst for Hantzsch Synthesis of Polyhydroquinolines

ACS Omega, Journal Year: 2024, Volume and Issue: 9(26), P. 28114 - 28128

Published: June 21, 2024

The present work aims at preparing the EDTA–Zn(II) complex─supported on amine-functionalized MIL-101(Cr) MOF─as a new and effective heterogenized catalyst. optimization of hydrothermal process shows that 120 °C is best condition to grow MIL-101(Cr)–NH2 MOF crystals. Moreover, regarding use postsynthetic modification (PSM) method, hexadentate EDTA was grafted this support via simple aminolysis before further coordinating it with Zn ions create corresponding Zn(II) catalytic complex. activity compound then investigated in context one-pot synthesis polyhydroquinolines. This approach has number advantages including following: solvent not hazardous, applying porous catalyst inexpensive, secure, recyclable; rapid reaction times, high levels efficiency, simplicity separation. Accordingly, question can be given label "green chemistry".

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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Metal–organic framework-derived photoelectrochemical sensors: structural design and biosensing technology

Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(11), P. 3692 - 3709

Published: Jan. 1, 2023

Metal–organic frameworks (MOFs) take on highly ordered self-assembled structures and have gained much attention due to their intriguing structural features enormous applications.

Language: Английский

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Multifunctional Dysprosium(III)–Organic Framework for Efficiently Catalyzing the Cycloaddition of CO₂ and Knoevenagel Condensation under Mild Conditions

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(50), P. 17837 - 17848

Published: Dec. 6, 2023

Two-dimensional (2D) materials with higher order in-plane nanoscale pores play a crucial role in innumerable applications, but their precise and reasonable preparation remains huge challenge. Herein, we report the highly robust 2D dysprosium(III)–organic framework {[Dy(H2BDTP)(DMF)2]·2DMF·3H2O}n (NUC-101) (15.2 × 6.4 Å2) (H5BDTP = 2,6-bis(2,4-dicarboxyphenyl)-4-(2H-tetrazol-5-yl)pyridine). After activation, scarcely reported host [Dy2(H2BDTP)2]n is of great interest due to that it not only contains voids 15.2 11.7 Å3 also functionalized by free carboxyl, pyridinyl, tetrazolyl groups upper lower parts. Thanks excellent physicochemical properties including omnidirectional opening pores, ultrahigh porosity, larger specific surface area, plentiful coexisting Lewis acid–base sites open dinuclear Dy3+ ions, groups, cycloaddition CO2 epoxides Knoevenagel condensation malonitrile aldehydes can be efficiently catalyzed NUC-101a under comparatively mild conditions high selectivity turnover frequency. This work provides valuable insight development nanoporous more feasible for achieving goal catalytic applications.

Language: Английский

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Eu(III) encapsulation strategy to construct intelligent ratiometric luminescent sensor for efficient detection of phenylglyoxylic acid biomarker in bodily fluids

Microchemical Journal, Journal Year: 2024, Volume and Issue: 207, P. 112127 - 112127

Published: Nov. 7, 2024

Language: Английский

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Recent progress in high-performance environmental impacts of the removal of radionuclides from wastewater based on metal–organic frameworks: a review

RSC Advances, Journal Year: 2023, Volume and Issue: 13(36), P. 25182 - 25208

Published: Jan. 1, 2023

The nuclear industry is rapidly developing and the effective management of waste monitoring fuel cycle are crucial.

Language: Английский

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Robust {Cd₄}-Organic Framework for Efficiently Catalyzing CO₂ Cycloaddition and Knoevenagel Condensation

Crystal Growth & Design, Journal Year: 2023, Volume and Issue: 23(5), P. 3320 - 3329

Published: April 20, 2023

The high-value-added carbonates generated from CO2 have attracted the attention of more and researchers because which optimization metal–organic framework (MOF)-based catalysts has seen a considerable upsurge at present. scarcely reported cadmium(II)-based MOFs inspire us to explore CdOFs with excellent catalytic activity high reusability. Herein, unification unreported {Cd4(μ3-OH)2(CH3CO2–)} cluster 2,6-bis(2,4-dicarboxylphenyl)-4-(4-carboxylphenyl)pyridine (H5BDCP) led highly robust nanoporous crystalline material {(Me2NH2)5[Cd4(BDCP)2(μ3-OH)2(CH3CO2)(H2O)2]·3DMF·2H2O}n (NUC-67) 57.4% void volume. Structural analysis displays that inner surface channels in activated NUC-67a is functionalized by Lewis acid sites unsaturated Cd2+ ions base μ3-OH– groups, CH3CO2– anions, free pyridine, C═O groups. Under solvent-free conditions, exhibits performance on cycloaddition epoxides; for instance, conversion rate propylene oxide (PO) into carbonate (PC) 1 atm can reach 99% within 6 h 55 °C, resulting 660 turnover number 110 h–1 frequency. Moreover, Knoevenagel condensation reactions aldehydes malononitrile be efficiently catalyzed NUC-67a. Encouragingly, shows strong structural stability good reversible cyclicity above two organic metal leaching below 8 ppb. Hence, this work proves MOF-based should focus design selection ligands, plays decisive role regulation, such as cluster-based nodes, defect sites, unexpected insertion high-porosity channels.

Language: Английский

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Functionalization strategies of metal-organic frameworks for biomedical applications and treatment of emerging pollutants: A review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 906, P. 167295 - 167295

Published: Sept. 22, 2023

Language: Английский

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Fluorescent nanomaterials for the detection of chronic kidney disease

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 173, P. 117572 - 117572

Published: Feb. 9, 2024

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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