A 2D coordination polymer, {[Zn(btca)(py)₂]}_n (1), (H₂btca = benzotriazole-5-carboxylic acid, py = pyridine), has been prepared with high yield by the hydrothermal reaction of H₂btca and Zn(NO₃)₂·6H₂O in the presence of py, which has been further characterized by kinds of methods combining elemental analysis, thermogravimetric (TG) analysis, infrared (IR) spectrum, powder X-ray diffraction (PXRD), and X-ray single-crystal diffraction. In 1, each Zn²⁺ adopts a five-coordinated pentagonal bipyramid geometry with one O atom from one carboxylate group of btca²⁻ ligand and four N atoms from two btca²⁻ ligands and two py molecules. Adjacent Zn²⁺ are connected by btca²⁻ ligands to generate a 2D layer with the ‘fes’-type topology, which could further form a 3D supramolecular network through hydrogen bonds interactions. Furthermore, the luminescent results reveal that the detection limit of 1 as a luminescent sensor to probe Cu²⁺ and PO₄³⁻ could reach 3 and 45 ppm, respectively, suggesting that 1 can sensitively and selectively detect Cu²⁺ and PO₄³⁻ in aqueous solution.

通过水热反应制备了2D配位聚合物{[Zn（btca）（py）₂ ]} _n（1）（H ₂ btca =苯并三唑-5-羧酸，py =吡啶）。py存在下的H ₂ btca和Zn（NO ₃）₂ ·6H ₂ O，已通过结合元素分析，热重（TG）分析，红外（IR）光谱，粉末X射线衍射的多种方法进行了进一步表征（PXRD）和X射线单晶衍射。在1中，每个Zn ²⁺呈五配位五角形双锥体几何结构，其中一个O原子来自btca ^2-的一个羧基配体和来自两个btca ^2-配体和两个py分子的四个N原子。相邻的Zn ²⁺通过btca ^2-配体连接以生成具有“ fes ”型拓扑的2D层，该层可通过氢键相互作用进一步形成3D超分子网络。此外，发光结果表明，作为探测Cu ²⁺和PO ₄ ^3-的发光传感器的检测限1分别可以达到3和45 ppm，表明1可以灵敏和选择性地检测Cu ²⁺和PO ₄ ^{3。 −}水溶液中。