Abstract
New bifunctional luminescent coordination polymer, formulated as {[Zn(μ-HCIP)(μ-pbix)]·2H2O}n (1) (H3CIP = 5-(4-carboxybenzylamino)isophthalic acid, pbix: 1,4-bis(imidazol-1ylmethyl)benzene), was synthesized under solvothermal conditions by using reduced Schiff base and neutral pbix ligands and characterized by IR spectroscopy, elemental analysis, single-crystal and powder X-ray diffraction, and thermal analysis. X-ray results indicated that the HCIP ligand acted as a bidentate bridging ligand and was partly deprotonated in 1. Complex 1 exhibited a 2D + 2D → 2D interpenetrated structure with sql topology. Complex 1 displayed high emission at the solid state. Luminescence titration experiments showed that complex 1 dispersed in dimethylformamide (DMF) detected the picric acid in the presence of other interfering nitroaromatic compounds with a detection limit of 56.46 ppb. In addition, complex 1 displayed highly sensitive and selective detection toward Fe3+ ion in the presence of other interfering metal ion...
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