| Coordination Polymers are materials that are self-assembled by ionic metal and organic bridging ligands with a low density porous crystalline structure with periodic network structure.In recent years,chemists have broad interest in aggregating polymers.But also because of its potential application value in the fields of optics,electronics,magnetic,gas storage,chemical sensing and catalysis.However,it is very important to study the influence of a certain factor on the ligand configuration and crystal structure by controlling the variable method,which is very important in the process of coordinating the coordination polymer.Therefore,the selection of ligands is very important for the synthesis and properties of coordination polymers.In this paper,we selected 1,3-di(2',5'-dicarboxypheny)benzene acid(H4L)and4-(1H-imidazol-1-yl)phthalic acid(H2L)ligand as organic ligands,through the hydrothermal synthesis and crystal conversion successfully constructed 9 cases of coordination Ni(L)(H2O)4(1),Co(HL)2(H2O)2(2),[Cu(L)(H2O)3]·H2O(3),Mn(L)(H2O)2(4),Cd(L)(H2O)2(5),[Zn2(L)2]·H2O(6),were synthesized by imidazole cyclic carboxylic acid,H2[Co2L(O2)0.5(H2O)0.5]·1.65DMA·3H2O(7),H6[Zn5L4]·2NMP·10H2O(8),H4[Cd5L4]·2H2N(Me)2·8DMF·6H2O(9),were synthesized by 3-biphenyl 4-carboxylic acid.The crystal structure has been characterized by X-ray single crystal diffraction data,and their powder diffraction,infrared and thermogravimetric properties have been characterized respectively,research on different properties of coordination polymers with special properties.The magnetic properties of the crystals containing Ni2+,Co2+ and Mn2+have been tested and studied.Cd2+,Zn2+,Eu2+ crystals were characterized by their luminescent sensing properties.At the same time,the effects of metal ions,reaction temperature and solvent medium on the matrix configuration and crystal structure were studied.The adsorption properties of some compounds were studied. |
PDF Full Text Request