Assemblies, Structures And Properties Of Coordination Polymers Based On Tetraphosphonic Acid And Sulfo Acid

Metal-Organic Coordination Polymers have attracted many attentions due to which integrate the conduction, fluorescence, oxidoreduction and catalysis of metal-centers, and which possess a number of potential applications in catalysis, gas sorption and desorption, fluorescent sensing, optoelectronic devices, and molecular magnetism. In this work, we choose N,N’,N,N’-ethylened aminetetrakis(methylenephosphonic) acid (H8L1) and2-(carboxymethoxy)-5-sulfobenzoic acid (H3L2) as original ligand, and obtained a series of1D,2D and3D coordination polymers by hydrothermal synthetic and solution methods according to crystal engineering theory. They are shown as following:[Co3(H6L1)3(H2O)2]·2H2O (1)[Cu3(H2L1)(H2O)2]·H2O (2)[Zn2(H4L1)]·2H2O (3) Zn2(H4L1)(4) Pb2(H4L1)(5)[M(H6L1)(H2O)]·H2O (M=Mn (6), Cd (7),Ca (8)) Cd2(H6L1)2(H2O)2(9)[Sr(H7L1)(H2O)2(OH)]·H2O (10)[Sr3L22(H2O)2]·H2O (11) Cd3L22(2,2’-bipy)2(12)The coordination polymers were characterized by IR, elementary analysis, thermo-gravimertric and X-ray single crystal diffraction. Luminescence was studied for some polymers. It was also investigated how to control the assembly of coordination polymers with desired properties, and the relation between structure and luminescence property was studied.