Stable Indium Pyridylcarboxylate Framework With Highly Selective Adsorption Of Cationic Dyes And Effective Nitenpyram Detection

On the basis of an undeveloped asymmetrical pyridylcarboxylate ligand, 2-(2-carboxypyridin-4-yl)terephthalic acid (H(3)CPTA), an indium pyridylcarboxylate framework, [(Me)(2)NH2]1.5[In1.5(CPTA)(2)]center dot 5.5NMF center dot 6H(2)O (1), is synthesized under solvent thermal conditions. 1 displays a 3D anionic framework with a large void space, which contains open square channels with a cross section of 14.6 A and a pore surface decorated with carboxylic oxygen atoms. Depending on the anionic skeleton and high water stability, 1 exhibits high adsorption selectivity and capacity for cationic dyes in aqueous solution. Furthermore, the luminescence performance illustrates that 1 has selectivity and sensitivity to nitenpyram with good recyclability.