Abstract 3-(3-Carboxypropoxy)benzoic acid (H2cpba) and its four luminescent Zn(II) coordination polymers with different N-heterocyclic ancillary ligands, namely, [Zn(cpba)(bimb)]n 1, [Zn(cpba)(bpy)]n 2, [Zn(cpba)(phen)]n 3 and [Zn2(cpba)(cdppy)2·5H2O]n 4, have been hydrothermally synthesized and fully characterized (bimb = 1,4-bis(imidazol-1-yl-methyl)benzene, phen = 1,10-phenanthroline, bpy = 2,2’-bipyridine, and Hcdppy = 4-carboxy-2,6-dipyrazin-2-ylpyridine). X-ray single crystal test results showed that complexes 1 and 4 show one-dimensional ladder-like structures, while complexes 2 and 3 are one-dimensional chain structures. These Zn(II) complexes displayed the differences not only in coordination geometries and ligand binding modes but also the luminescent properties in the solid state. Additionally, the luminescence sensing properties revealed that complex 4 can identify picric acid efficiently through fluorescence quenching.

中文翻译：

---

基于3-（3-羧基丙氧基）苯甲酸和含氮配体的锌（II）配位聚合物的构建，用于高灵敏度检测苦味酸

摘要3-（3-羧基丙氧基）苯甲酸（H2cpba）及其四种具有不同N杂环辅助配体即[Zn（cpba）（bimb）] n 1，[Zn（cpba）的发光Zn（II）配位聚合物（bpy）] n 2，[Zn（cpba）（phen）] n 3和[Zn2（cpba）（cdppy）2·5H2O] n 4，已经水热合成并得到了充分表征（bimb = 1,4-bis（咪唑-1-基-甲基）苯，phen = 1,10-菲咯啉，bpy = 2,2'-联吡啶，Hcdppy = 4-羧基-2,6-二吡嗪-2-基吡啶。X射线单晶测试结果表明，配合物1和4为一维梯状结构，而配合物2和3为一维链状结构。这些Zn（II）配合物不仅显示出配位几何形状和配体结合模式方面的差异，而且还显示出固态下的发光特性。此外，