A new three-dimensional bis(benzimidazole)-based cadmium(II) coordination polymer

A new coordination polymer (CP), formulated as [Cd(L)(DCTP)17, (1) (L = 1,1'-(1,4-butanediyl)bis(2-methylbenzimidazole), H2DCTP = 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 I is a 3D 3-foldinterpenetrated dia network with large well-defined pores. It is found that CP 1 revealed highly sensitive luminescence sensing for Fe3+ 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 mu M (S/N = 3). Moreover, the photocatalytic efficiency of I 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 Fe3+ ions and effectively degrading dyes. (C) 2017 Elsevier B.V. All rights reserved.