Pendent carboxylic acid-fuelled high-performance uranium extraction in a hydrogen-bonded framework and prolifically improved water oxidation via post-metalation-actuated composite fabrication

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(6), P. 3501 - 3512

Published: Jan. 1, 2024

Employing a functionality scissoring approach, hydrogen-bonded MOF shows selective and regenerable uranium extraction alongside exceptionally improved electrochemical oxygen evolution via post-metalation.

Language: Английский

---

Mechanistical Insights into the Ultrasensitive Detection of Radioactive and Chemotoxic UO₂²⁺ Ions by a Porous Anionic Co-Metal–Organic Framework

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(22), P. 10403 - 10413

Published: May 18, 2024

Development of a simple, cost-efficient, and portable UO22+ sensory probe with high selectivity sensitivity is highly desirable in the context monitoring radioactive contaminants. Herein, we report luminescent Co-based metal–organic framework (MOF), {[Me2NH2]0.5[Co(DATRz)0.5(NH2BDC)]·xG}n (1), equipped abundant amino functionalities for selective detection uranyl cations. The ionic structure consists two types channels decorated plentiful Lewis basic moieties, which trigger stronger acid–base interaction diffused cationic units thus can selectively quench fluorescence intensity presence other interfering ions. Furthermore, limit sensing was achieved to be as low 0.13 μM (30.94 ppb) rapid responsiveness multiple recyclabilities, demonstrating its excellent efficacy. Density functional theory (DFT) calculations further unraveled preferred binding sites ions tubular channel MOF structure. Orbital hybridization between NH2BDC/DATRz together significantly large electron-accepting ability identified responsible luminescence quenching. More importantly, prepared 1@PVDF {poly(vinylidene difluoride)} mixed-matrix membrane (MMM) displayed good activity comparable 1, great significance their practical employment MOF-based luminosensors real-world application.

Language: Английский

---

Metal–Organic Framework-Based Fluorescent Sensors for the Detection of Pharmaceutically Active Compounds

Chemistry of Materials, Journal Year: 2023, Volume and Issue: 36(1), P. 99 - 131

Published: Dec. 18, 2023

The surging growth of clinical and pharmaceutical medication as a consequence population has become threat to the environment. inherent antagonistic effects medications their metabolized side products on healthy society is an essential concern requiring immediate monitoring. To speculate these environmental pollutants, huge number selective, sensitive, cost-effective, user-compatible metal–organic framework (MOF)-based fluorescent sensors have been reported by many prominent research groups. Many recent review articles cover details MOF-based florescence sensing antibiotics, but accumulation fluorometric detection other drugs still not reported. Realizing this gap, we discussed most MOF for various in Review. selectivity, sensitivity (limit (LOD) Stern–Volmer constant (Ksv)), response time, proposed mechanisms drug thoroughly discussed. Moreover, article also covers few antibiotic sensors, which covered any previous report. Therefore, Review will provide valuable information guidance researchers develop targeted hazardous drugs. Additionally, science can leverage enhance efforts monitor control pollution.

Language: Английский

---

Developing a Bifunctional Copper-Organic Framework for Fluorescence Turn-on Hg²⁺ Sensing and Catalyzing CO₂ Cycloaddition Reaction

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(11), P. 4333 - 4341

Published: May 17, 2024

Metal–organic frameworks attract great attention because they show potential for applications such as catalysis and luminescence sensing. Herein, a novel copper–organic framework, [Cu2.5(OH)(nia)2(Bibt)1.5]n, known CuBN, was hydrothermally prepared based on the self-assembly of 4,7-bis(1H-imidazole-1-yl) benzo-[2,1,3]thiadiazole (Bibt), 5-(1,8-naphthalimido)-isophthalic acid (H2nia), CuCl2·2H2O. CuBN exhibited 4, 8-connected sqc 3D porous framework with binuclear copper oxygen cluster unit point symbol {34 48 512 64}{32 42 52}. can work an efficient luminescent sensor Hg2+ via turn-on fluorescence change. Fluorescent data shows that has high selectivity to among various metal ions, detection limit is low, down 9.52 nM. The sensing behavior be mainly attributed Hg2+-promoted collapsing subsequent binding ligand Bibt. In addition, exhibits capability promoting chemical fixation CO2 cyclic carbonates under mild conditions (0.1 mol % catalyst loading, 2 TBAB, 1 atm CO2, 24 h, 80 °C without solvent) up 97% yield good reusability.

Language: Английский

---

Nitrogen-Rich Covalent Organic Polymer for Metal-Free Tandem Catalysis and Postmetalation-Actuated High-Performance Water Oxidation

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(32), P. 41721 - 41733

Published: Aug. 1, 2024

Development of high-performing catalytic materials for selective and mild chemical transformations through adhering to the principles sustainability remains a central focus in modern chemistry. Herein, we report template-free assembly thermochemically robust covalent organic polymer (COP: 1) from 2,2′-bipyridine-5,5′-dicarbonyl dichloride 2,4,6-tris(4-aminophenyl)triazine as [2 + 3] structural motifs. The two-dimensional (2D) layered architecture contains carboxamide functionality, delocalized π-cloud, free pyridyl-N site-decked pores. Such trifunctionalization benefits this polymeric network exhibiting tandem alcohol oxidation-Knoevenagel condensation. In contrast common metal-based catalysts, 1 represents one kind metal-free oxidation reaction via extended π-cloud delocalization-mediated radical pathway, comprehensively supported diverse control experiments. addition reasonable recyclability broad substrate scope, condition underscores its applicability benign synthesis valuable product benzylidene malononitrile. Integration 2,2′-bipyridyl units 2D COP favors anchoring non-noble metal ions devise 1-M (M: Ni2+/ Co2+) that demonstrate outstanding electrochemical oxygen evolution alkaline media with high chronoamperometric stability. Electrochemical parameters both 1-Co 1-Ni outperform some benchmark, commercial, well majority contemporary OER catalysts. Specifically, overpotential Tafel slope (280 mV, 58 mV/dec) is better than (360 78 because increased charge accumulation higher number active sites compared former. addition, turnover frequency found be 6 times ranks among top-tier water results provide insights field catalysis promising splitting at interface task-specific functionality fuelling networks.

Language: Английский

---

Ag‐Nanocatalysts Based on Porous Organic Polymers in Chemical Fixation of CO₂ for the N‐Methylation and N‐Formylation of Amines

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(5)

Published: Jan. 16, 2024

Abstract Chemical fixation of CO 2 for the synthesis valuable chemicals is very demanding in context green and sustainable chemistry. Herein, we report highly efficient silver‐loaded porous organic polymer catalysts exclusive N‐formylation N‐methylation amines under ambient reaction conditions using as a C1 source. By adjusting solvent temperature reaction, successful production formamides methylamines could be accomplished with high levels selectivity efficiency. POP‐based materials Ag@TTP‐1 Ag@PAN‐T are utilized low‐cost both primary secondary product yields up to 98 % achieved. demonstrated superior catalytic efficiency compared reactions. This result suggests that grafting Ag nanoparticles onto POP surface area plays crucial role these The above‐mentioned (Ag@TTP‐1 Ag@PAN‐T) characterized through powder XRD, FT IR spectroscopy, FE‐SEM, TEM, thermogravimetric techniques, N sorption XPS analysis. Ag‐nanocatalysts heterogeneous nature recycling several cycles this reaction.

Language: Английский

---

Reusable MOF-Coated Chitosan@Paper Strip Composite for Real-Time Monitoring of Pesticide Pendimethalin and Organoarsenic Feed Additive Roxarsone Levels in Environmental Water, Food, and Vegetable Samples

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(27), P. 35245 - 35254

Published: June 27, 2024

An alarming increase in the use of pesticides and organoarsenic compounds their toxic impacts on environment have inspired us to develop a selective highly sensitive sensor for detection these pollutants. Herein, bio-friendly, low-cost Al-based luminescent metal–organic framework (1′)-based fluorescent material is demonstrated that helps sustaining water quality by rapid monitoring quantification long-established pesticide (pendimethalin) widely employed feed additive (roxarsone). A pyridine-functionalized porous aluminum-based (Al-MOF) was solvothermally synthesized. After activation, it used fast (<10 s) turn-off roxarsone pendimethalin over other competitive analytes. This first MOF-based recyclable with remarkably low limit (LOD, 14.4 nM). Real-time effectiveness various vegetable food extracts successfully verified. Moreover, aqueous-phase an ultralow (13.1 nM) makes potential candidate real-time application. The limits are lower than existing based sensors. Furthermore, different environmental wide pH range good recovery percentage demonstrated. In addition, cheap bio-friendly 1′@chitosan@paper strip composite prepared hands-on roxarsone. behavior 1′ presence examined systematically, plausible mechanistic pathways were proposed help multiple experimental evidences.

Language: Английский

---

Imidazole Functionalized and Cobalt-Oxygen Cluster-Based Metal-Organic Framework for Catalytical Conversion of CO2 and Logically Acidic Amino Acid Sensing

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141543 - 141543

Published: Jan. 1, 2025

Language: Английский

---

Chemisorption of Emerging Contaminants (F−, AsIII/V, Pb2+) Using MOF for Sustainable Water Treatment: A Critical Review

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Language: Английский

---

Site-Memory-Triggered Reversible Acronym Encryption in a Nitrogen-Rich Pore-Partitioned MOF for Ultrasensitive Monitoring of Roxarsone and Dichloran over Multiple Platform

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(47), P. 54397 - 54408

Published: Nov. 15, 2023

Stimuli-responsive emission color modulation in fluorescent metal-organic frameworks (MOFs) promises luminescence-ink-based security application, while task-specific functionality-engineered pores can aid fast-responsive, discriminative, and ultralow detection of harmful organo-aromatics the aqueous phase. Considering practical applicability, a self-calibrated fluoro-switch between encrypted decrypted states is best suited for antiforgery measures, whereas image-based monitoring organo-toxins by repetitive handy methods over multiple platforms endorses in-field sensory potential. Herein, we constructed mixed-ligand based chemically stable bilayered-pillar MOF from -NH2-hooked pyridyl linker tricarboxylate ligand that embraces negatively charged [Cd3(μ2-OH)(COO)6] node shows pore-space-partitioning nitrogen-rich flanked organic struts. Owing to presence self-calibrating triazolylamine moiety-grafted auxiliary linker, this anionic delineates reversible multicyclic fluoro-swapping protonated-encrypted deprotonated-decrypted domains alternative acid base. Such pH-triggered, site-specific luminescence variation utilized construct highly regenerative anticounterfeiting labels vivid acronym encryption. The intense fluorescence signature material further harnessed extremely selective quick responsive sensing feed additive roxarsone (ROX) dichloran (DCNA) pesticide recyclable fashion with significant quenching nanomolar limits (ROX: 52 ppb; DCNA: 26.8 ppb). Notably, ultrasensitive fluoro-detection both these successfully demonstrated via paper-strip method as well on vegetable surface real-time monitoring. Comprehensive density functional theory studies validate electron transfer mechanism through redistribution molecular orbital energy levels each targeted analytes electron-rich framework besides evidencing MOF-analyte supramolecular interactions.

Language: Английский

---