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Abstract：
2,6-pyridine dicarboxylic acid (DPA) is an exceptional biomarker of notorious anthrax spores. Therefore, the rapid, sensitive, and selective quantitative detection of DPA is extremely significant and urgent. This paper reports a Zn(II) metal-organic framework with the formula of {[Zn6(NDA)6(DPBT)3] 2H2O·3DMF}n (MOF-1), which consists of 2,6-naphthalenedicarboxylic acid (2,6-NDA), 4,7-di(4-pyridyl)-2,1,3-benzothiadiazole (DPBT), and Zn(II) ions. Structural analysis indicated that MOF-1 is a three-dimensional (3D) network which crystallized in the monoclinic system with the C2/c space group, revealing high pH, solvent, and thermal stability. Luminescence sensing studies demonstrated that MOF-1 had the potential to be a highly selective, sensitive, and recyclable fluorescence sensor for the identification of DPA. Furthermore, fluorescent test paper was made to detect DPA promptly with color changes. The enhancement mechanism was established by the hydrogen-bonding interaction and photoinduced electron transfer transition between MOF-1 and DPA molecules.
摘要：
2,6-吡啶二羧酸（DPA）是臭名昭著的炭疽孢子的特殊生物标志物。因此,快速，敏感,选择性定量检测DPA具有极其重要的意义和紧迫性。本文报道了式为{[Zn6（NDA）6（DPBT）3]2H2O·3DMF}n（MOF-1）的Zn（II）金属有机骨架，由2,6-萘二羧酸（2,6-NDA）组成，4,7-二(4-吡啶基)-2,1,3-苯并噻二唑(DPBT),和Zn(II)离子。结构分析表明，MOF-1是在单斜晶系中结晶的三维（3D）网络，具有C2/c空间群，显示高pH值，溶剂,和热稳定性。发光传感研究表明，MOF-1具有高选择性，敏感,和可回收荧光传感器用于识别DPA。此外，制作荧光试纸，以快速检测颜色变化的DPA。通过MOF-1和DPA分子之间的氢键相互作用和光诱导电子转移跃迁建立了增强机制。
