A 4′‐(4‐carboxyphenyl)‐3,2′:6′,3′′‐terpyridine‐based luminescent cadmium(II) coordination polymer for the detection of 2,4,6‐trinitrophenol |
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Authors: | Bin Xu Fuming Luo Guodong Tang Jinfang Zhang |
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Abstract: | The title coordination polymer, polybisμ3‐4‐(3,2′:6′,3′′‐terpyridin‐4′‐yl)benzoato]cadmium(II)], Cd(C22H14N3O2)2]n or Cd(3‐cptpy)2]n, (I), has been synthesized solvothermally and characterized by IR spectroscopy, thermogravimetric analysis, and single‐crystal and powder X‐ray diffraction. The structure is composed of 3‐cptpy? ligands bridging Cd atoms, with each Cd atom coordinated by six ligands and each ligand coordinating to three Cd atoms. Each Cd atom is in a slightly distorted trans‐N2O4 octahedral environment, forming a two‐dimensional layer structure with a (3,6)‐connected topology. Layers are linked to each other by π–π stacking, resulting in a three‐dimensional supramolecular framework. The strong luminescence and good thermal stability of (I) indicate that it can potentially be used as a luminescence sensor. The compound also shows a highly selective and sensitive response to 2,4,6‐trinitrophenol through the luminescence quenching effect. |
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Keywords: | cadmium(II) two‐dimensional coordination polymer crystal structure luminescence TNP sensor |
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