Decanuclear Cluster-Based Metal–Organic Framework with a (3,11)-Connected Topology and Highly Sensitive 2,4,6-Trinitrophenol Detection

Abstract

A 3-D heterothiometallic cluster-based metal-organic framework was constructed from the new oligomeric decanuclear heterothiometallic building clusters [W2(μ3-S)6(μ4-S)2Cu8] 4+ , tetradentate 3-abpt units (3-abpt = 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole) and CNbridges. It possesses an unprecedented (3,11)-connected architecture, luminescence, and highly sensitive 2,4,6-trinitrophenol (TNP) sensing properties in both organic and aqueous media.

Coordination Polymers as a Functional Material for the Selective Molecular Recognition of Nitroaromatics and ipso‐Hydroxylation of Arylboronic Acids

“…The usage of nitroaromatic compounds (NACs) as explosive materials has been tremendously increased in both modern industrialization and extremism thereby, attracting attention concerning environmental, homeland security and other humanitarian consequences. [1][2][3][4][5][6][7][8] NACs such as nitrobenzene (NB), 2-nitrophenol (2-NP), 4-nitrophenol (4-NP), 4-nitrotoluene (4-NT), 2-nitroaniline (2-NA), 3-nitroaniline (3-NA), 4-nitroaniline (4-NA) (4-nitrophenyl)hydrazine (4-NPH) and so on are notorious environmental pollutants. [9,10] Whereas, those containing di-or tri-nitro groups for instance, 2,4-dinitrophenol (2,4-DNP), mdinitrobenzene (m-DNB), 3,5-dinitrosalicylic acid (3,5-DNSA), 3,5dinitrobenzoic acid (3,5-DNBA), 2,4,6-trinitrophenol (TNP) and trinitrotoluene (2,4, are renowned as primary starting materials for the synthesis of various chemical explosives due to their low cost and easy transportation and thus could cause serious threats to the society.…”

“…

We report the synthesis and structural characterization of two coordination polymers (CPs), namely; [{Zn-(L) 6 -di(pyridin-4-yl)naphthalene-2,6-dicarboxamide). Crystal packing of 1 reveals the existence of channels running along the b-and c-axis filled by the ligated DMF and lattice anions, respectively.

…”

Chemically Robust and Bifunctional Co(II)-Framework for Trace Detection of Assorted Organo-toxins and Highly Cooperative Deacetalization–Knoevenagel Condensation with Pore-Fitting-Induced Size-Selectivity

“…In contrast, other NACs could not quench the emission intensity to such an extent, and the order of quenching efficiencies is TNP ≫ 2,4-DNP > 4-NP > 3-NP > 2-NP > 2,4-DNT > 4-NT > DMDNB (Figure S20). A quantitative assessment of luminescence response of 10a toward TNP was acquired (Figure S29) from K SV (1.54 × 10 5 M –1 ), which supersedes many reports regarding aqueous phase TNP sensing. − Similar to 4-AP, the S–V plot exhibits a pronounced curvature at higher TNP concentrations, which is because of the presence of charge- and energy-transfer processes (vide infra).…”

Microporous Cd(II) Metal–Organic Framework for CO2 Catalysis, Luminescent Sensing, and Absorption of Methyl Green

“…On the basis of previous reported work, the luminescence quenching of ions may be caused by the following three reasons: (I) crystal structure collapse of MOFs; (II) interaction between ions and organic ligands or central metals; (III) competitive adsorption of skeleton and ions for excited wavelength energies. − To further study the luminescence quenching mechanism by Cu 2+ , Fe 3+ , Cr 3+ , [Fe­(CN) 6 ] 3– , and Cr 2 O 7 2– , a range of experiments were carried out. In the first step, the PXRD results of Cdbptc showed that the samples after titration were in great agreement with the simulated one, indicating that Cdbptc maintained the original stable network and could be reused in the sensing experiment (Figure S15).…”