Three-dimensional cage zinc triazine framework compound: Fluorescence sensing of aromatic compounds containing NO₂/OH groups

Abstract

A new compound {[Zn7(DPOT)2(H2O)11]·2OH·3H2O·5DMA} (1) was synthesized by the reaction of H6DPOT ligand (H6DPOT= 5, 5', 5''-((1, 3, 5-triazine-2, 4, 6-triyl) tris(oxy)) tri-isophthalic acid, DMA= N, N-Dimethylacetamide) and Zn(NO3)2·6H2O with...

Three new Zn(ii) coordination polymers for highly selective and sensitive detection of Fe3+

“…The lengths of Zn-O bonds are from 1.9561 to 2.1118 Å, which is in agreement with the reported values. [61][62][63][64][65][66] The hydroxyl group links two Zn1 ions and one Zn2 ion, so four Zn(II) ions (two Zn1 ions and two Zn2 ions) are connected by two μ 3 -OH − as bridging groups to form a tetranuclear cluster. The tetranuclear cluster is linked with six L2 3− ligands.…”

Trefoil-Shaped Metal–Organic Cages as Fluorescent Chemosensors for Multiple Detection of Fe3+, Cr2O72–, and Antibiotics

“…With the rapid development of modern industrial processes, an increasing number of chemicals are produced. All kinds of organic and inorganic pollutants cause serious environmental pollution, thereby seriously threatening water quality and human health. , For example, Fe 3+ , as an essential trace element in human life, plays a positive and important role in many physiological processes . However, it is now considered to be an industrial pollutant because overload or deficiency causes various severe diseases such as iron-deficiency anemia, skin ailments, and hepatic cirrhosis. − On the other hand, Cr 2 O 7 2– ions are one of the common toxic heavy-metal pollutants in industrial fields that are potent carcinogens due to strong oxidation and easy entry into human cells. , Even at low concentrations, long-term exposure of Cr 2 O 7 2– can induce the disruption of proteins and enzymes, renal damage, and even cancer. − Thus, there is an urgent need to develop a simple, selective, and sensitive detection method for Fe 3+ and Cr 2 O 7 2– in an aqueous solution.…”

Neomangiferin defect-engineering ZIF-8 for visually differentiating aprotic/protic solvents and real-time sensing trace water

“…1 Luminescent MOFs (LMOFs) combine the unique host-guest interactions of MOFs with controllable photophysical and photochemical properties, which are beneficial for fluorescent sensing with fast response, superior sensitivity, excellent selectivity, reversible and recyclable sensing properties. 1,2 Generally, the fluorescence emission of LMOFs comes from building blocks with independent and/or synergistic actions: (i) conjugated organic ligands (e.g., porphyrin, naphthalimide, anthracene, carbazole), 3,4 (ii) lanthanide metal ions (e.g., Eu 3+ , Tb 3+ , and Ln 3+ ), 5,6 and (iii) encapsulated luminescent guest materials (e.g., organic dyes, carbon dots). 7 In recent years, a series of LMOFs have been fabricated and successfully synthesized by designing elaborate and rigid organic ligands, metal ions/ clusters, and guest materials to detect multiple targets.…”

“…1,2 Generally, the fluorescence emission of LMOFs comes from building blocks with independent and/or synergistic actions: (i) conjugated organic ligands ( e.g. , porphyrin, naphthalimide, anthracene, carbazole), 3,4 (ii) lanthanide metal ions ( e.g. , Eu 3+ , Tb 3+ , and Ln 3+ ), 5,6 and (iii) encapsulated luminescent guest materials ( e.g.…”