【摘要】 以4-（2,4-二羧基苯氧基）邻苯二甲酸（H₄dpa）和2,2’-联吡啶（bpy）为配体与Cd（NO₃）₂·4H₂O反应，通过水热合成法设计并制备了配位聚合物{[Cd（H₂dpa）（bpy）]·3H₂O}_n （Cd-CP）。利用单晶X射线衍射、粉末X射线衍射、元素分析和红外对Cd-CP进行结构分析，其为P2₁/c空间群单斜晶系。Cd-CP为一维双链结构，通过氢键作用进一步构建成三维超分子网络。热重分析表明CdCP具有优异的热稳定性。荧光分析表明：Cd-CP对金属离子(Fe³⁺和Zn²⁺)、2,4,6-三硝基苯肼（TRI）、嘧霉胺（Pth）具有良好的选择性和灵敏度。有趣的是，Cd-CP对金属离子进行荧光检测时，对Fe³⁺有荧光猝灭效应，但对Zn²⁺有明显增强效应，据此我们设计了一个“开-关-开”的逻辑门。此外还深入探讨了其荧光传感的潜在机理。更多还原

【Abstract】 A coordination polymer{[Cd（H₂dpa）（bpy）]·3H₂O}_n （Cd-CP） was designed and hydrothermal synthesized based on 4-（2,4-dicarboxyphenoxy） phthalic acid （H₄dpa）,2,2’-bipyridine （bpy） and Cd（NO₃）₂·4H₂O.The structure was characterized by single-crystal X-ray diffraction,powder X-ray diffraction,elemental analysis,and infrared spectroscopy.Cd-CP belongs to the monoclinic crystal system with the P2₁/c space group and performs in a 1D double-chain structure.The adjacent double chains further form a 3D supramolecular network structure through hydrogen bonding.Thermogravimetric analysis shows that Cd-CP has good thermal stability.Fluorescence analysis showed that Cd-CP had good choosing selectively and was sensitive to metal ions (Fe³⁺and Zn²⁺),2,4,6-trinitrophenylhydrazine （TRI）,and pyrimethanil （Pth）.Interestingly,when Cd-CP was used for fluorescence detection of metal ions,it was found to have a fluorescence quenching effect on Fe³⁺but had an obvious enhancement effect on Zn²⁺.Therefore,we designed an“on-off-on”logic gate.In addition,the mechanism of fluorescence sensing has been deeply explored.CCDC:2258625.更多还原