A linear fluorescent pyridyl ligand, 9,10-di(4-pyridyl)anthracene (dpa), and N,N,N’,N’-Tetrakis(4-carboxyphenyl)-1,4-phenylenediamine (H₄TCPPDA) were selected as organic ligands to synthesize a new Co(II) metal–organic framework, namely {[Co₂(TCPPDA)(dpa)(H₂O)₂]·3DMF·3H₂O}_n (CoMOF-s1). In the crystal structure of CoMOF-s1, the Co(II) was connected by TCPPDA^4- and dpa to construct a three-dimensional framework, which features a 2, 4, 6-c network topology with the point symbol of {4⁴.6².8⁸.12}{4⁴.6²}{8}. Magnetic analyses revealed an overall antiferromagnetic coupling between two adjacent metal centers. Moreover, luminescence sensing experiments demonstrated that CoMOF-s1 displays highly sensitive and selectivity properties in the detection of nitrofuran antibiotics (nitrofurazone, NFZ, nitrofurantoin, NFT) with low detection limits of 0.15 μM and 0.23 μM, respectively. Furthermore, possible reasons for the quenching response were further explored by Powder X-ray diffraction (PXRD), UV–vis, and density functional theory (DFT) calculation.

线性荧光吡啶基配体、9,10-二(4-吡啶基)蒽(dpa)和N,N,N',N'-四(4-羧基苯基)-1,4-苯二胺(H 4 _TCPPDA )选择有机配体合成新的Co(II)金属有机骨架，即{[Co ₂ (TCPPDA)(dpa)(H ₂ O) ₂ ]·3DMF·3H ₂ O} _n ( CoMOF-s1)。CoMOF-s1的晶体结构中，Co(II)通过TCPPDA ^4-和dpa连接构建三维骨架，具有2,4,6-c网络拓扑结构，点符号为{4 ⁴ .6 ² .8 ⁸ .12}{4 ⁴ .6 ² }{8}。磁性分析揭示了两个相邻金属中心之间的整体反铁磁耦合。此外，发光传感实验表明，CoMOF-s1在检测硝基呋喃类抗生素（呋喃西林、NFZ、呋喃妥因、NFT）时表现出高灵敏度和选择性，检测限分别为 0.15 μM 和 0.23 μM。此外，通过粉末X射线衍射（PXRD）、紫外可见分光光度计和密度泛函理论（DFT）计算进一步探讨了猝灭响应的可能原因。