Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China.
Dalton Trans. 2019 Feb 7;48(5):1786-1794. doi: 10.1039/c8dt04653k. Epub 2019 Jan 15.
A luminescent Eu-MOF, namely, [Eu(ppda)(npdc)(HO)]·HO (1) based on the mixed ligands 4-(pyridin-3-yloxy)-phthalic acid (Hppda) and naphthalene-1,4-dicarboxylic acid (Hnpdc) was synthesized under solvothermal conditions. Compound 1 was initially constructed from the 1D binuclear chains of [Ln(npdc)] and further connected by ppda ligands, forming a 2D layered structure. It is worth noting that compound 1 exhibited excellent fluorescence stability in the pH range of 2-13 in an aqueous solution. It was found that compound 1 could not only detect trivalent Fe, Cr and Al ions with high selectivity and recyclability but also serve as an excellent selective sensing material for PO ions among some anions. The detection of NACs demonstrated that compound 1 could also behave as a functional probe with high selectivity, sensitivity, and recyclability, and the detection limit of TNP was 2.97 × 10 M. Furthermore, the luminescent sensing mechanisms for different analytes were speculated.
一种基于混合配体 4-(吡啶-3-氧基)苯二甲酸（Hppda）和萘-1,4-二羧酸（Hnpdc）的 Eu-MOF 发光材料[Eu(ppda)(npdc)(HO)]·HO（1），通过溶剂热条件合成。化合物 1 最初由[Ln(npdc)]的一维双核链组成，然后通过 ppda 配体连接，形成二维层状结构。值得注意的是，化合物 1 在 pH 值为 2-13 的水溶液中表现出优异的荧光稳定性。发现化合物 1 不仅可以对三价 Fe、Cr 和 Al 离子进行高选择性和可回收性的检测，而且可以作为一些阴离子中 PO 离子的优良选择性传感材料。对 NACs 的检测表明，化合物 1 还可以作为一种具有高选择性、灵敏度和可回收性的功能探针，TNP 的检测限为 2.97×10^-7 M。此外，还推测了不同分析物的发光传感机制。
