A Chemically Robust 2D Ni‐MOF as an Efficient Heterogeneous Catalyst for One‐Pot Synthesis of Therapeutic and Bioactive 2‐Amino‐3‐Cyano‐4H‐Pyran Derivatives

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: July 10, 2024

Abstract Despite possessing numerous catalytic advantages of MOFs, developing 2D frameworks having excellent chemical stability along with new properties remains a grand challenge. Herein, by employing mixed ligand synthetic approach, we have constructed Ni‐MOF, IITKGP‐52 , which exhibits framework robustness in open air, water, as well over wide range aqueous pH solutions (2–12). Benefitting from its and abundant Lewis acidic metal sites (OMSs), is explored catalyzing the heterogeneous three‐component condensation reaction for tandem synthesis bioactive 2‐amino‐3‐cyano‐4H‐pyran derivatives low loading, greater compatibility substrates, recyclability superior efficiency than previously employed homo systems. inaugurates employment MOF‐based catalysts one‐pot therapeutic derivatives.

Language: Английский

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Highly Water‐Stable 2D MOF as Dual Sensor for the Ultra‐Sensitive Aqueous Phase Detection of Nitrofuran Antibiotics and Organochlorine Pesticides

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

Abstract Misuse of antibiotics and pesticides has led to hazardous effects on human health, livestock, agriculture, aquaculture, which urges researchers find simple, rapid, efficient, cost‐effective methods for quick on‐site analysis these organic pollutants with functional materials. Herein, a 2D chemically robust MOF: IITKGP‐71 , {[Cd(MBPz)(2,6‐NDC)]·2H 2 O} n is strategically developed ease in scalability exploited as dual sensors toward the toxic antibiotic pesticide detection via luminescence quenching aqueous medium . The framework displays exceptional chemical robustness water 3 months, an open atmosphere over wide range pH solution (pH = 3–12) day. can selectively quench nitrofuran (NFZ NFT) organochlorine DCN while remaining unaffected by other interfering pesticides, respectively. An excellent trade‐off between high effectivity (high K sv ) sensitivity (low LOD) was achieved targeted analytes. easy scalability, stability, fast responsivity, multi‐responsive nature, recyclability outstanding structural stability made this viable playing crucial role safeguarding aquatic ecosystems public health from pesticides.

Language: Английский

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Temperature-Variant CO₂ Separation in Entangled Meta-Organic Framework with Carboxamide Functionality-Fueled Atmospheric-Pressure Cycloaddition and Size-Exclusive Tandem Knoevenagel Condensation

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(42), P. 15432 - 15446

Published: Oct. 7, 2024

The pressing need to lower atmospheric carbon dioxide (CO2) concentration has captivated global focus on point-source capture and transformation of this greenhouse gas chemicals. Purpose-driven pore-functionality engineering in metal–organic frameworks (MOFs) can lead high-temperature humid-condition adsorption efficient cycloaddition CO2 further assist achieving unconventional methodologies for sustainable tandem catalysis. Herein, we develop a [Zn2(COO)4N4] building unit-containing chemo-robust framework with carboxamide functionality, free oxygen atoms, π-electron-rich moieties affixed one-dimensional channels. This 3-fold entangled MOF exhibits strong framework–gas interactions unveils variable-temperature recurrent capture–release cycles even under 75% relative humidity. Interestingly, the CO2/N2 selectivity shows remarkable 82% increase an temperature from 273 K (79) 313 (143), which overpowers several porous adsorbents validates potential flue separation. microporous catalyzes solvent-free recyclable various epoxides pressure. In contrast classical Lewis acid-mediated reaction, controlled experiments, including performance comparison urea functionality-truncated isostructural corroborate unique two-point hydrogen bonding-mediated pathway. suitably oriented moiety within channels acts as bond donor (HBD) site deacetalization–Knoevenagel condensation reaction >99% conversion solvent-less mild conditions 4 h. cooperative role acid–base dual sites substrate activation is comprehensively supported by studies using external additives, fluoro-titration-derived interactions, unfunctionalized framework. To best our knowledge, one-pot acetals having larger molecular dimensions exhibit poor formation α,β-unsaturated dicyanides, demonstrate pore-fitting-mediated size-exclusive

Language: Английский

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Highly Sensitive and Selective Detection of Uranyl Ions Based on a Tb³⁺-Functionalized MOF via Competitive Host–Guest Coordination

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

Published: Feb. 11, 2025

Owing to the rapid development of nuclear industry, uranium has become a global environmental contaminant due its radiotoxicity and chemotoxicity, posing significant threats human health ecological safety. Although various instrumental chemical analytical methods have been developed for uranyl ion detection in aquatic environments, searching new sensors with high stability, sensitivity, selectivity remains challenge. In this study, luminescent Zr-based metal–organic framework (MOF), designated as Tb@UiO-66-(COOH)2, was successfully synthesized utilizing postsynthetic exchange (PSE) method along Tb3+ doping detection. Interestingly, presence UO22+ ions causes replacement guest (Tb3+) sensor via competitive host–guest interaction, leading luminescence quenching. The attenuation intensity Tb@UiO-66-(COOH)2 exhibits an excellent linear relationship concentrations within wide range 0–2.52 μM. Notably, demonstrates unprecedentedly sensitivity (Ksv = 2.16 × 105 M–1) extremely low limit (LOD) down 8.03 nM (1.91 ppb) deionized water. More importantly, can achieve efficient performance, even excesses competing ions. values Ksv were determined be 2.10 M–1 Xie'ao Lake water 3.05 seawater; LOD 8.26 (1.96 5.68 (1.35 seawater. To best our knowledge, is first instance introducing coordination strategy into MOF-based high-performance Hence, present work offers novel idea building functional MOFs aqueous solutions.

Language: Английский

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Error self-corrected D-shaped fiber-optic ion sensor based on amidoxime hooks for specific detection of 238UO22+ in water

Measurement, Journal Year: 2025, Volume and Issue: unknown, P. 117568 - 117568

Published: April 1, 2025

Language: Английский

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Water‐Resistant Fluoro‐Switchable MOF and Reconfigurable Bio‐Composite for Nanomolar Level Ultra‐Fast Monitoring of Organo‐Arsenic and Antibiotic Feed‐Additives

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Abstract A mixed‐ligand‐based novel 3D Cd(II)‐based metal‐organic framework (MOF) is devised from π‐electron‐rich organic struts that shows two‐fold interpenetrated bilayer‐pillar structure. The strong luminescence of the MOF gets remarkably quenched by roxarsone (ROX) organo‐arsenic in water. material further exemplifies one‐of‐a‐kind fluoro‐switchable probe for antibiotics and exhibits massive turn‐off emission tetracycline (TTC), whereas sulfamethazine (SMZ) triggers an unprecedented 120% enhancement. Apart regenerative, fast‐responsive, selective fluoro‐detection all three feed‐additives, particularly significant nanomolar limits detection (LOD) ROX (48.9 n m ), LOD SMZ (33.9 ) ranks lowest, TTC (22.8 stands second lowest among reported sensory MOFs. Besides varying degrees energy transfer contribution TTC, density functional theory calculations manifest changes levels individual organo‐aromatics additionally describe framework–analyte supramolecular interactions. sensor works equally well different wastewater specimens a wide pH range with good recovery percentage. To broaden practical scope material, cheap MOF@paper strip as reconfigurable MOF@chitosan@paper bio‐composite developed successfully employed instantaneous monitoring both at their low concentrations.

Language: Английский

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Natural product synthesis by a nanoporous In-MOF Catalyst: Crystallographic insight by incorporating substrate inside its nanopores

Journal of Catalysis, Journal Year: 2024, Volume and Issue: 437, P. 115641 - 115641

Published: July 14, 2024

Language: Английский

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A Luminescent MOF-Based Sensor for Monitoring of an Anticancer Drug and a Pyrethroid Fungicide Biomarker in Wastewater and Biological Fluids

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(36), P. 47713 - 47723

Published: Aug. 27, 2024

The extensive use of insecticides, such as pyrethroids, and pharmaceutical drugs, doxorubicin (DOX) has significantly increased to meet the growing demand for food production disease treatment. Among them, 3-phenoxybenzoic acid (3-PBA), a metabolite pyrethroid poses various health environmental risks. Similarly, DOX is well-known anticancer drug been continuously used many years. high unregulated disposal these substances raise concerns both humans environment. To address this issue, there pressing need monitor presence analytes in wastewater protect our ecosystems. This challenge inspired us develop an MOF-based fluorometric dual sensor capable rapid selective detection aqueous solutions. work represents first probe detecting targeted analytes. There was 98% fluorescence quenching upon introduction whereas about 11-fold increment probe's intensity took place 3-PBA. sensitivity notably limits (LOD) are 8.7 nM 1.2 Our designed highest

Language: Английский

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Biphenyltetracarboxylate-Based Luminescent Metal-Orgainc Framework for Sensing of 2,6-Dipicolinic Acid and Cr(VI) Oxo-Anions

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 15, 2024

Language: Английский

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Luminescent Cd-MOF and its mixed matrix membrane as a chemical sensor for selective and reversible detection of folic acid and Fe3+, and visible fingerprint identifying

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: unknown, P. 140492 - 140492

Published: Oct. 1, 2024

Language: Английский

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