Abstract A new Zn(II)-based coordination polymer (CP), [Zn(HL)·1.5H2O] (1), has been synthesized using 4-(2,4,6-tricarboxylphenyl)-3,2ˊ,6ˊ,4ˊˊ-terpyridine (H3L). Single-crystal X-ray diffraction reveals that 1 possesses a 2D layer-like structure, which further connects through hydrogen bonding interactions to form a 3D supramolecular network. The luminescence measurements showed that 1 is capable of detecting nitro-aromatic compounds (NACs) in particular 2,4,6-trinitrophenol (TNP) as well as Fe3+ ions with high sensitivity and selectivity in aqueous medium. The limit of detections (LODs) for the recognition of TNP and Fe3+ are 1.23 and 0.94 ppm, respectively. The reason for decrease in intensity of emission of 1 on addition of NACs to it has been examined by theoretical calculations which suggested that charge transfer is taking place between 1 and NACs which may be the prime reason for the decrease in emission intensity. Graphical Abstract

中文翻译：

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用于检测三硝基苯酚和 Fe3+ 的多响应发光二维 Zn(II) 基配位聚合物

摘要 以4-(2,4,6-三羧基苯基)-3,2ˊ,6ˊ为原料合成了一种新型Zn(II)基配位聚合物(CP)[Zn(HL)·1.5H2O](1)， 4ˊˊ-三联吡啶（H3L）。单晶X射线衍射表明1具有2D层状结构，通过氢键相互作用进一步连接形成3D超分子网络。发光测量表明，1 能够在水性介质中以高灵敏度和选择性检测硝基芳香化合物 (NAC)，特别是 2,4,6-三硝基苯酚 (TNP) 以及 Fe3+ 离子。识别 TNP 和 Fe3+ 的检测限 (LOD) 分别为 1.23 和 0.94 ppm。已通过理论计算检查了在添加 NAC 时 1 的发射强度降低的原因，这表明电荷转移发生在 1 和 NAC 之间，这可能是发射强度降低的主要原因。图形概要