Abstract
A new cobalt(II) coordination polymer, namely [Co(L)(Ndc)] n (I), where L = 1,5-bis(5,6- dimethylbenzimidazole)pentane, H2Ndc = 2,6-naphthalenedicarboxylic acid, was synthesized and characterized by elemental analysis, IR spectra, powder X-ray diffraction and single-crystal X-ray diffraction (CIF file CCDC no. 1548044). Complex I displays a 2D (4,4) layer which further extended into a 3D supramolecular framework via weak C–H···O hydrogen bondings. The luminescence explorations demonstrated that I exhibits highly selective and sensitive sensing for Cr2O 2−7 with high quenching efficiency Ksv value of 9.87 × 103 L mol−1 and low detection limit (0.24 μM (S/N = 3)). Meanwhile I also exhibits highly selective and sensitive sensing for Fe3+ with quenching efficiency Ksv = 3.6 × 104 L mol–1 and low detection limit (0.32 μM (S/N = 3)). Complex I exhibits higher photocatalytic activities for the degradation of methylene blue under UV irradiation. Additionally, the thermal behavior and electrochemical properties of the compound are also presented.
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Zhao, X.X., Liu, L.W., Li, Y.F. et al. Synthesis, Crystal Structure, Luminescence Sensing, and Photocatalytic Properties of a 2D Cobalt(II) Coordination Polymer Containing Bis(benzimidazole) Moieties. Russ J Coord Chem 44, 439–447 (2018). https://doi.org/10.1134/S1070328418070060
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DOI: https://doi.org/10.1134/S1070328418070060