Syntheses,Structures and Photoluminescent Properties of Cd(Ⅱ) Polymeric Complexes Based on 5-Aminoisophthalic Acid and Bipyridine Co-ligands

Two novel complexes, namely {Cd(AIP)(4,4?-bpy)]·1.3DMF}n(1) and Cd(AIP)(2,2?- bpy)]n(2), have been synthesized through solvothermal reaction(H2AIP = 5-aminoisophthalic acid, 2,2?-bpy = 2,2?-bipyridine, 4,4?-bpy = 4,4?-bipyridine, and DMF = N,N?-dimethylformamide) and structurally determined by single-crystal X-ray diffraction. Complex 1 shows a three-dimensional(3D) layer-pillar framework with rectangular channels, while complex 2 displays a two-dimensional(2D) wave net architecture. Furthermore, 1 and 2 were characterized by elemental analysis, infrared spectra(IR), thermal gravimetric analyses(TGA) and fluorescence measurements. The luminescent properties of 1 dispersed in various organic solvents have been investigated systematically, demonstrating high selectivity for acetone via the fluorescence quenching effect.