Reactions of divalent metal salts with 4,4-oxybis(N-(pyridine-4-yl)-benzamide), , and naphthalene-1,4-dicarboxylic acid (1,4-HNDC) in various solvents gave [Zn()(1,4-NDC)·HO], , [Cd()(1,4-NDC)(HO)·MeOH], , and [Co()(1,4-NDC)(HO)·MeOH], , which have been structurally characterized. Complexes - show eight-fold interpenetrating frameworks with the topology, which exhibit porosities substantiated by CO adsorption, whereas and manifest stability in aqueous environments and show high selectivity toward sensing of mesitylene molecules and Fe ions with low detection limits and good reusability up to five cycles.
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The effect of conjugation degree of aromatic carboxylic acids on electronic and photo-responsive behaviors of naphthalenediimide-based coordination polymers.
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Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030031, China.
Three novel naphthalenediimide-based (NDI-based) coordination polymers (CPs), namely [Cd(3-PMNDI)(2,2'-BPDC)] (1), [Cd(3-PMNDI)(4,4'-BPDC)(HO)]·DMF (2) and [Cd(3-PMNDI)(4,4'-SDC)] (3) (2,2'-HBPDC = 2,2'-biphenyldicarboxylic acid, 4,4'-HBPDC = 4,4'-biphenyldicarboxylic acid, 4,4'-HSDC = 4,4'-stilbenedicarboxylic acid, 3-PMNDI = ,'-bis(3-pyridylmethyl)-1,4,5,8-naphthalenediimide, and DMF = ,'-dimethylformamide), have been designed and synthesized here from electron-deficient PMNDI (electron acceptors, EAs) and electron-rich aromatic carboxylic acids (electron donors, EDs) in the presence of cadmium ions. The introduction of aromatic carboxylic acids with different sizes and conjugation degrees leads to the generation of a two-dimensional (2D) layer in 1, a two-fold interpenetrated three-dimensional (3D) network in 2 and an eight-fold interpenetrated 3D framework in 3. Furthermore, the use of distinct electron-donating aromatic carboxylic acids and the consequent different numbers and strengths of lone pair-π and π-π interactions in the interfacial contacts of EDs/EAs give rise to distinct intermolecular charge transfer (ICT) and initial colors of the three CPs, and consequently cause different photoinduced intermolecular electron transfer (PIET) and distinguishing photo-responsive behaviors (weak photochromic performance for 1, excellent photochromic properties for 2 and non-photochromism for 3).
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Department of Chemistry, Chung-Yuan Christian University, Chung Li 32023, Taiwan.
Reactions of divalent metal salts with 4,4-oxybis(N-(pyridine-4-yl)-benzamide), , and naphthalene-1,4-dicarboxylic acid (1,4-HNDC) in various solvents gave [Zn()(1,4-NDC)·HO], , [Cd()(1,4-NDC)(HO)·MeOH], , and [Co()(1,4-NDC)(HO)·MeOH], , which have been structurally characterized. Complexes - show eight-fold interpenetrating frameworks with the topology, which exhibit porosities substantiated by CO adsorption, whereas and manifest stability in aqueous environments and show high selectivity toward sensing of mesitylene molecules and Fe ions with low detection limits and good reusability up to five cycles.
View Article and Find Full Text PDFChiral [MoO] Polyoxoanion-Induced Three-Dimensional Architectures With Homochiral Eight-Fold Interpenetrated Metal-Organic Frameworks.
Inorg Chem
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College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P. R. China.
A pair of novel chiral compounds based on homochiral 8-fold interpenetrated metal-organic frameworks (MOFs) and chiral polyoxometalates (POMs), formulated as d-[Cu(4,4'-bipy)][MoO] (d-1) and l-[Cu(4,4'-bipy)][MoO] (l-1) (4,4'-bipy = 4,4'-bipyridine), have been successfully synthesized and characterized by single crystal X-ray diffraction, infrared, thermogravimetric analysis, elemental analysis, and solid circular dichroism spectra. Structural analysis indicates that two compounds are enantiomers. The connection of copper cations and 4,4'-bipy ligands generates helical infinite chains, while adjacent chains are further linked by Cu-N bonds to form a three-dimensional interpenetrating framework with a (10,3)-a topology.
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March 2012
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Eight 2D and 3D coordination polymers, [Mn(NBPDC)(1,4-bimb)](n) (1), [Zn(NBPDC)(1,4-bimb)](n) (2), [Cd(NBPDC)(1,4-bimb)](n) (3), [Mn(2)(NBPDC)(2)(1,3-bimb)(H(2)O)](n) (4), {Zn(NBPDC)(1,3-bimb)}(n) (5), [Cd(2)(NBPDC)(2)(1,3-bimb)(2)(H(2)O)](n) (6), [Mn(NBPDC)(4,4'-bimbp)](n) (7), and [Cd(2)(NBPDC)(2)(4,4'-bimbp)(2)](n) (8), (NBPDC = 2,2'-dinitro-4,4'-biphenyldicarboxyl acid, 1,4-bimb = 1,4-bis(imidazol-1-ylmethyl) benzene, 1,3-bimb = 1,3-bis(imidazol-1-ylmethyl) benzene, and 4,4'-bimbp = 4,4'-(bis(imidazol-l-ylmethylene)) biphenyl), have been prepared and structurally characterized. In these coordination polymers, NBPDC and three N-donor ligands link different metal ions and SBUs to construct diverse architectures. Compounds 1 and 3 are isomorphic, showing a two-fold interpenetrating pcu topology.
View Article and Find Full Text PDF"Systematic Synthesis of a Metal Organic Framework Based on Triangular Cu(3)(μ(3)-OH) Secondary Building Units: From a 0-D Complex, to an 1-D Chain and a 3-D Lattice".
Cryst Growth Des
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Department of Chemistry and the Institute for Functional Nanomaterials, University of Puerto Rico, P.O. Box 70377, San Juan, PR 00936-8377.
Reactions of Cu(CF(3)SO(3))(2) and pyrazole in methanolic solutions in the presence of stoichiometric amounts of py, py/4,4'-bpy, or 4,4'-bpy have yielded two new complexes [Cu(3)(μ(3)-OH)(μ-pz)(3)(py)(3)](CF(3)SO(3))(2)·0.5H(2)O (1) and [{Cu(3)(μ(3)-OH)(μ-pz)(3)(py)(2)}(2)(μ-4,4'-bpy)](CF(3)SO(3))(4) (2), a one-dimensional coordination polymer, {[Cu(3)(μ(3)-OH)(μ-pz)(3)(py)(μ-4,4'-bpy)](CF(3)SO(3))(2)·0.5H(2)O}(n) (3), and a three-dimensional, eight-fold interpenetrated extended lattice, {[Cu(3)(μ(3)-OH)(μ-pz)(3)(μ-4,4'-bpy)(1.
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