A stable Cu-MOF as a dual function sensor with high selectivity and sensitivity detection of picric acid and CrO42-in aqueous solution

摘要: Abstract A novel three-dimension (3D) Cu (II)-based metal-organic framework [Cu2(tpt)2(tda)2]⋅H2O (1) (tpt = 2,4,6-Tri(pyridin-4-yl)-1,3,5-triazine, H2tda = 2,5-thiophene dicarboxylic acid) with a four-connected uninodal net has been successfully synthesized under solvothermal conditions. Compound 1, as dual function sensor for selective and sensitive detection of picric acid (PA) chromate ions (CrO42−) in solution, not only high quenching constant low limit detection, but also can resist interference analogues. Furthermore, 1 behaves excellent stability which steadily exist different organic solution acid-based solution. In addition, the cycling experiments PA-1 CrO42-1 indicate that satisfying reusability promising application field analytical chemistry detection. Meanwhile, fluorescence mechanism be further discussed. Noticeably, C-V experiment was introduced to prove mechanism, best our knowledge is first reported.