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A new coordination polymer (CP), formulated as [Cd(L)(DCTP)] n ( 1 ) (L = 1,1′-(1,4-butanediyl)bis(2-methylbenzimidazole), H 2 DCTP = 2,5-dichloroterephthalic acid), was synthesized under hydrothermal conditions and the performance as luminescent probe was also investigated. Single-crystal X-ray diffraction reveals CP 1 is a 3D 3-fold interpenetrated dia network with large well-defined pores. It is found that CP 1 revealed highly sensitive luminescence sensing for Fe 3 + ions in acetonitrile solution with a high quenching efficiency of K SV = 2541.238 L·mol − 1 and a low detection limit of 3.2 μM (S/N = 3). Moreover, the photocatalytic efficiency of 1 for degradation of methylene blue could reach 82.8% after 135 min. Therefore, this coordination polymer could be viewed as multifunctional material for selectively sensing Fe 3 + ions and effectively degrading dyes. [ABSTRACT FROM AUTHOR]

Three supramolecular coordination polymers, namely [Ni(L1)(DCTP)(HO)] (1), [Cu(L2)(DCTP)] (2), [Co(L3)(DCTP)] (3) (L1 = 1,5-bis(5,6-dimethylbenzimidazole)pentane, L2 = 1,4-bis(5,6-dimethylbenzimidazole)butane, L3 = 1,4-bis(benzimidazole)-2-butylene) have been hydrothermally synthesized and characterized by single crystal X-ray structure determination, FT-IR, elemental analysis, X-ray powder diffraction (XPD), and thermogravimetric analysis (TGA). CP 1 exhibits 2D 6 honeycombed network structure, which is further extended into a 3D Moganite ( mog) supramolecular framework by classical O-H⋯O hydrogen-bonding interaction. CPs 2 -3 present 2D (4,4) layers, and 3D supramolecular frameworks that are formed by π- π stacking interactions. Furthermore, the catalytic activities of CPs 1-3 for the degradation of methyl orange in a Fenton-like process has been investigated, and CPs 1-3 show strong photoluminescence properties at room temperature in solid state. [ABSTRACT FROM AUTHOR]