Silver phosphate supported on metal–organic framework (Ag<sub>3</sub>PO<sub>4</sub>@MOF‐5) as a novel heterogeneous catalyst for green synthesis of indenoquinolinediones

Rather, Ryhan Abdullah; Siddiqui, Zeba N.

doi:10.1002/aoc.5176

Cited by 25 publications

(9 citation statements)

References 58 publications

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“…It is noteworthy that the IR spectra of MOF-5 containing water exhibit weak ν(O–H) signals . Concurrently, the Raman spectra of MOF-5 show clearly the expected signature of this MOF skeleton (Figure S2) in agreement with the literature. , …”

Section: Resultssupporting

confidence: 89%

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Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn₂(BTTB)(DMF)₂•(H₂O)₃]_n

Schlachter,

Asselin,

Fortin

et al. 2023

Inorg. Chem.

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3D-[Zn4O(1,4-BDC)3•x(solvent)] n (MOF-5; BDC = 1,4-benzodicarboxylate) and 3D-[Zn2(BTTB)(DMF)2•(H2O)3] n (MOF-D; BTTB = 4,4′,4″,4‴-benzene-1,2,4,5-tetrayltetrabenzoate) have been investigated by means of steady-state UV–visible and fluorescence and time-resolved emission spectroscopy, as a function of solvent and power of the excitation irradiation. The low-temperature X-ray structures (173 K) were permitted to locate solvent molecules (here H2O) in the lattice. They were found distributed in the middle in the voids with no evidence of specific interactions (H-bond, coulombic, and dipole–dipole) with the framework. The fluorescence decays of the ligands (ππ* excited state), τF, for the host–guest composites MOF-5@solvent and MOF-D@solvent (solvent = air, MeCN, EtCN, MeOH, EtOH, and DMF) were found bi-exponential (short τF1 (ps), and long τF2 (ns)) with one important feature: upon cooling from 298 to 77 K, MOF-5’s τF1 decreases and τF2 increases, while the opposite trend is generally observed in MOF-D. The low values for τF1 (ps) in MOF-5 are associated with the augmented probability of solvent-ligand collisions leading to nonradiative deactivation, which upon cooling to 77 K increases further as the scaffolding contracts. The augmentation in τF2 is readily associated with the increased rigidity of the ligands that are not submitted to this effect (at the surface of the MOF and as pendent groups). For the low emitter MOF-D, the reversed situation is noted but not as clearly due to the uncertainties in the data. Upon increasing the excitation flux, the fluorescence intensity increases linearly with the laser power indicating the absence of singlet–singlet annihilation, inferring the absence of efficient exciton migration. This observation is explained by the small absorptivity coefficients, which leads to a small J spectral overlap between absorption and fluorescence according to the Forster and Dexter theories, and consequently, a small rate for energy migration. This conclusion drastically changes the perception of the photocatalytic mechanism of MOF-5 and other MOFs exhibiting similar absorption features (i.e., no antenna effect).

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Section: Resultssupporting

confidence: 89%

“…47 Concurrently, the Raman spectra of MOF-5 show clearly the expected signature of this MOF skeleton (Figure S2) in agreement with the literature. 48,49 Fluorescence Spectra and Lifetimes. The fluorescence spectra of both MOFs (Figure 1) fall in the expected regions.…”

Section: [Zn 2 (Bttb)(dmf) 2 •(H 2 O) 3 ] N (Mof-d)mentioning

confidence: 99%

Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn₂(BTTB)(DMF)₂•(H₂O)₃]_n

Schlachter,

Asselin,

Fortin

et al. 2023

Inorg. Chem.

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“…With minor modifications, MOF-5 was prepared according to a previously published technique . Terephthalic acid (5.065 g, 30.5 mmol) and trimethylamine (8.5 mL) were dissolved in 400 mL dimethylformamide (DMF) in a usual manner to obtain a homogeneous solution.…”

Section: Methodsmentioning

confidence: 99%

“…With minor modifications, MOF-5 was prepared according to a previously published technique. 64 Terephthalic acid (5.065 g, 30.5 mmol) and trimethylamine (8.5 mL) were dissolved in 400 mL dimethylformamide (DMF) in a usual manner to obtain a homogeneous solution. Zn (OAc) 2 ·2H 2 O (16.99 g, 77.4 mmol) was dissolved in DMF (500 mL) and added to the homogeneous solution gradually for a period of 15 min with steady stirring.…”

Section: Methodsmentioning

confidence: 99%

Ionic Liquid Functionalized Metal–Organic Framework ([DEIm][PF₆]@MOF-5): Synthesis, Characterization, and Catalytic Application in the Reduction of 4-Nitrophenol

Ali

Siddiqui

2023

ACS Omega

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A novel, unique, highly effective, and recyclable heterogeneous catalyst, diethyl imidazolium hexafluorophosphate ionic liquid supported metal− organic framework ([DEIm][PF 6 ]@MOF-5), has been synthesized using a simple impregnation method at ambient temperature. Characterization of the catalyst was done through various techniques such as Fourier transform infrared (FTIR), energy dispersive X-ray, X-ray diffraction (XRD), transmission electron microscopy, scanning electron microscopy (SEM), elemental mapping, Raman spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis (TGA) analyses. The kinetic study has shown the high catalytic performance of [DEIm][PF 6 ]@MOF-5 for the reduction of 4-nitrophenol (NP) compared to other catalysts. The catalyst also exhibited efficient electrochemical activity toward 4-NP reduction. The catalyst was recyclable for more than seven cycles without any significant loss in its catalytic performance. The recycled catalyst was further studied using XRD, FTIR, SEM, and TGA analyses to investigate the structural changes that occurred during the reaction. The catalyst maintained its structural integrity even after seven cycles.

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“…[33][34][35][36] In addition, due to the porous structure, the surface of Zn-based MOFs tends to greatly profit from generating the intimate interaction interface between Zn species and ligand. [37][38][39][40] Recently, some specific efforts have been made to design effective traditional-based MOF catalysts based on expensive metals. [38,41] Therefore, the utilizing of MOFs as catalytic materials is a novel strategy to develop organic chemistry methodologies.…”

Section: Introductionmentioning

confidence: 99%

A novel cubic Zn‐citric acid‐based MOF as a highly efficient and reusable catalyst for the synthesis of pyranopyrazoles and 5‐substituted 1H‐tetrazoles

Koolivand

Nikoorazm

Ghorbani‐Choghamarani

et al. 2022

Applied Organom Chemis

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A highly stable and efficient heterogeneous catalyst was successfully prepared by hydrothermal reaction of Zinc nitrate with citric acid. To produce a novel Zn-based MOF catalyst, Zn ions were coordinated with the ligand functional groups that can be regarded as an alpha-hydroxy acid containing three carboxylic acids (COOH) and one hydroxyl (OH) group attached to the three-carbon skeleton. It was found that the Zn-CA-MOFs compound can participate as a catalyst in the synthesis of 5-substituted 1H-tetrazole and pyranopyrazole molecules, selectively and efficiently with high yield in a short period of time.As presented, the catalyst demonstrates excellent reusability and stability and can be recycled up to five times without significant loss of reactivity. Heterogeneity analysis showed that no leaching of active Zn species occurred during the recycling process of the heterogeneous Zn-CA-MOFs.

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Silver phosphate supported on metal–organic framework (Ag₃PO₄@MOF‐5) as a novel heterogeneous catalyst for green synthesis of indenoquinolinediones

Cited by 25 publications

References 58 publications

Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn₂(BTTB)(DMF)₂•(H₂O)₃]_n

Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn₂(BTTB)(DMF)₂•(H₂O)₃]_n

Ionic Liquid Functionalized Metal–Organic Framework ([DEIm][PF₆]@MOF-5): Synthesis, Characterization, and Catalytic Application in the Reduction of 4-Nitrophenol

A novel cubic Zn‐citric acid‐based MOF as a highly efficient and reusable catalyst for the synthesis of pyranopyrazoles and 5‐substituted 1H‐tetrazoles

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Silver phosphate supported on metal–organic framework (Ag3PO4@MOF‐5) as a novel heterogeneous catalyst for green synthesis of indenoquinolinediones

Cited by 25 publications

References 58 publications

Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn2(BTTB)(DMF)2•(H2O)3]n

Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn2(BTTB)(DMF)2•(H2O)3]n

Ionic Liquid Functionalized Metal–Organic Framework ([DEIm][PF6]@MOF-5): Synthesis, Characterization, and Catalytic Application in the Reduction of 4-Nitrophenol

A novel cubic Zn‐citric acid‐based MOF as a highly efficient and reusable catalyst for the synthesis of pyranopyrazoles and 5‐substituted 1H‐tetrazoles

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Silver phosphate supported on metal–organic framework (Ag₃PO₄@MOF‐5) as a novel heterogeneous catalyst for green synthesis of indenoquinolinediones

Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn₂(BTTB)(DMF)₂•(H₂O)₃]_n

Strong Host–Guest Dependence on the Emissive Properties of MOF-5 and [Zn₂(BTTB)(DMF)₂•(H₂O)₃]_n

Ionic Liquid Functionalized Metal–Organic Framework ([DEIm][PF₆]@MOF-5): Synthesis, Characterization, and Catalytic Application in the Reduction of 4-Nitrophenol