摘要
通过水热法合成了一个由三连接的2,3-喹啉二甲酸桥联扭曲的Cd~(2+)八面体形成的二维层状配位聚合物[Cd(QDA)]_n(1)。该配合物发射出较强的蓝色荧光并具有很高的热稳定性和化学稳定性。更为重要的是,该配合物在乙醇分散体系中可快速识别痕量的2,4,6-三硝基苯酚和Fe~(3+)离子,其对2,4,6-三硝基苯酚的淬灭常数(K_(sv))和检测限(LOD)分别为6.61×10~4L·mol~(-1)和0.83μmol·L~(-1),对Fe~(3+)离子的淬灭常数和检测限分别为1.74×10~4L·mol~(-1)和2.70μmol·L~(-1)。
A layered coordination polymer[Cd(QDA)]_n(1)with distorted Cd~(2+)octahedron extended by three-connected2,3-quinoline dicarboxylate linkers was hydrothermally synthesized,exhibiting intense blue fluorescence and highly thermal and chemical stability.More interestingly,the complex dispersed in ethanol can quickly probe the trace amounts of 2,4,6-trinitrophenol(K_(sv)=6.61×10~4L·mol~(-1),LOD=0.83μmol·L~(-1))and Fe~(3+)(K_(sv)=1.74×10~4L·mol~(-1),LOD=2.70μmol·L~(-1))through fluorescence quenching with high quenching constants(K_(sv))and low limits of detection(LOD).
引文
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