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A novel high sensitive Cd-MOF fluorescent probe for acetone vapor in air and picric acid in water: Synthesis, structure and sensing properties
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy ( IF 4.4 ) Pub Date : 2020-09-17 , DOI: 10.1016/j.saa.2020.118962
Ping Ju , Hua Yang , Long Jiang , Mengting Li , Yang Yu , Ensheng Zhang

A novel three-dimensional luminescence Cd-MOF sensor with the molecular formula {[(CH3)2NH2]2 Cd3(ptptc)2} (complex 1) has been synthesized by using terphenyl-3,3′,5,5′-tetracarboxylic acid (H4ptptc) and Cd(NO3)2·4H2O under solvothermal conditions. Single crystal X-ray diffraction analysis shows that complex 1 crystallizes in the monoclinic system C2/c space group and consists of one-dimensional channels. Complex 1 exhibits characteristic fluorescence emission (λem = 380 nm) both in solid state and solvents upon excitation at 300 nm. Real-time fluorescence quenching of complex 1 was observed in the fluorescence sensing of acetone vapor and picric acid. Intriguingly, ppm scale detection limit for acetone vapor in air and nano-mole scale detection limit for picric acid in water were observed. Moreover, good reusability and liner/nonlinear relationships were observed in the fluorescent titration.



中文翻译:

新型高灵敏度Cd-MOF荧光探针,用于空气中的丙酮蒸气和水中的苦味酸:合成,结构和传感性质

利用三联苯-3,3',5,合成了分子式为{[(CH 32 NH 2 ] 2 Cd 3(ptptc)2 }(络合物1)的新型三维Cd-MOF传感器。 5'-四羧酸(H 4 ptptc)和Cd(NO 32 ·4H 2 o在溶剂热条件。X射线单晶衍射分析表明,配合物1在单斜晶系C 2 / c空间群中结晶,由一维通道组成。综合大楼1显示出特征性荧光发射(λ EM 在300nm处= 380纳米)无论是在激发后固态和溶剂。在丙酮蒸气和苦味酸的荧光检测中观察到了配合物1的实时荧光猝灭。有趣的是,观察到了空气中丙酮蒸气的ppm标度检测限和水中苦味酸的纳摩尔标度检测限。此外,在荧光滴定法中观察到良好的可重复使用性和线性/非线性关系。

更新日期:2020-09-30
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