Topic
Coordination polymer
About: Coordination polymer is a research topic. Over the lifetime, 11988 publications have been published within this topic receiving 212219 citations.
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TL;DR: In this paper, the thermal stability of polymers formed between three ligands and selected metal ions was investigated and their thermal stability in air was investigated, and it was shown that higher thermal stability resulted when Zn or Th were used than if metals capable of changing their ionic valency were involved in polymer formation.
Abstract: Polymers formed between three ligands and selected metal ions were prepared and their thermal stability in air was investigated. 1,5-Dihydroxynaphthalene-2,6-dicarboxylic acid (1,5-N-2,6) formed coordination polymers with Zn, Ni, Al, and Fe+3. Zn-1,5-N-2,6 was more stable than the corresponding Fe and Ni polymers. Pyromellitic acid (PMA) formed coordination polymers of high molecular weight with Th and U+4. The Th-PMA was stable up to 405°C., while the corresponding uranium compound decomposed below 400°C. The coordination polymer of 2,3,6,7-naphthalenetetracarboxylic acid (NT) with Th was less stable (decomposition temperature: 360°C.) than the corresponding pyromellitic polymer because the coordination of Th in Th-NT was partially accomplished by water molecules rather than carboxylic oxygens as in the Th-PMA polymer. The thermal stability of these polymers was a function of the metal involved in coordination. Higher thermal stability resulted when Zn or Th were used than if metals capable of changing their ionic valency were involved in polymer formation.
91 citations
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TL;DR: A new 2D π-conjugated EC-MOFs containing mixed trigonal-liganded copper units was developed, providing the proper resistance baseline and highly accessible areas for the development of an excellent chemiresistive gas sensor.
Abstract: Single-ligand-based electronically conductive porous coordination polymers/metal-organic frameworks (EC-PCPs/MOFs) fail to meet the requirements of numerous electronic applications owing to their limited tunability in terms of both conductivity and topology. In this study, a new 2D π-conjugated EC-MOF containing copper units with mixed trigonal ligands was developed: Cu3 (HHTP)(THQ) (HHTP=2,3,6,7,10,11-hexahydrotriphenylene, THQ=tetrahydroxy-1,4-quinone). The modulated conductivity (σ≈2.53×10-5 S cm-1 with an activation energy of 0.30 eV) and high porosity (ca. 441.2 m2 g-1 ) of the Cu3 (HHTP)(THQ) semiconductive nanowires provided an appropriate resistance baseline and highly accessible areas for the development of an excellent chemiresistive gas sensor.
90 citations
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TL;DR: The remarkable character of these frameworks is that coordination polymer II demonstrates highly selective and sensitive bifunctional luminescent sensor toward nitrobenzene and Cu2+ ion.
Abstract: Two metal–organic frameworks (MOFs), namely, [Ni(DTP)(H2O)]n (I) and [Cd2(DTP)2(bibp)1.5]n (II) (H2DPT = 4′-(4-(3,5-dicarboxylphenoxy) phenyl)-4,2′:6′,4″-terpyridine; bibp = 1,3-di(1H-imidazol-1-yl)propane), that present structural diversity were solvothermally prepared. Single-crystal X-ray diffraction analysis indicates that they consist of {NiN2O4} building units (for I) and {CdO4N2} and {CdO3N3} building units (for II), which are further linked by multicarboxylate H2DPT to construct microporous three-dimensional frameworks. The remarkable character of these frameworks is that coordination polymer II demonstrates highly selective and sensitive bifunctional luminescent sensor toward nitrobenzene and Cu2+ ion. The fluorescence quenching mechanism of II caused by nitrobenzene is ascribed to electron transfer from electron-rich (II) to electron-deficient nitrobenzene. The result was also evidenced by the density functional theory. Furthermore, anti-ferromagnetic as well as electrochemical characters of Ni-...
90 citations
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TL;DR: In this article, the meso-helix structure of a mesohelix was determined from a mixture of dichloromethane/hexane and a one-dimensional coordination polymer.
Abstract: Reaction of achiral [Cu2(H3CCN)2(mu-pydz)3][PF6]2 (1) (pydz = pyridazine) with bidendate 1,3-bis(diphenylphosphanyl)propane (2) in acetonitrile at room temperature in a 1:1 ratio yielded the mononuclear copper(I) complex [Cu[CH2(CH2PPh2)2]2][PF6] (3) together with new one-dimensional coordination polymer 1 to infinity[[Cu(mu-pydz)2][PF6]] (4). Air-sensitive single crystals of 4, suitable for X-ray structure determination, were grown from a mixture of dichloromethane/ hexane [crystal system: monoclinic; space group: C2/c: a = 21.910(3), b = 12.130(2), c = 25.704(3) A,beta = 110.08(10) degrees, V = 6416.65(16) A3]. The one-dimensional coordination polymer 1 to infinity[[Cu(mu-pydz)2][PF6]] (4) exhibits as outstanding feature the rare structure of a meso-helix.
90 citations
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TL;DR: Rational design and synthesis of a new low molecular weight gelator (LMWG) having 9,10-diphenylanthracene core and terminal terpyridine is reported, which leads to yellow and white light emitting bimetallic gels.
90 citations