| In this thesis,by used the selected a semi-rigid tricarboxylic acid main ligand H3L:3-[?1-carboxynaphthalen-2-yl?oxy]phthalic acid and six nitrogen-containing heterocyclic ligands to self-assemble with transitions metal ions and main group metal ions,we obtained nine coordination polymers with the structures ranged from zero to three dimensions frameworks.The structure and properties of complexs were analyzed and studied by infrared spectrum,X-ray single crystal diffraction,PXRD,thermogravimetry,fluorescence spectrum,ultraviolet spectrum and so on.First,three nitrogen-containing heterocyclic co-ligands:mida[1,4-bis?1H-imidazol-1-yl?benzene],bimb{1-[4-?2H-1?4-imidazol-1-yl?methyl]benzyl}-1H-imidazole and 1,10-phen?1,10-o-phenanthroline?,and transition metal salts cobalt nitrate hexahydrate and manganese acetate were incorporated into the H3L,we have got four types of coordination polymers:[Co3?L?2?mida?3]n?1?,[Co2?HL?2?mida?2]n?2?,[Co3?L?2?bimb?3]n?3?,[Mn7?L?4?1,10-phen?2?CH3COO-?2?H2O?6]n?4?.Among them,1 and 2 we were obtained under the same conditions but changing the ratio of H3L and mida ligands,which possess 2D different layered structures.3 has a 3D structure,and 4 possess 1D chain structure constructed Mn?II?7 cluster.On the degradation properties of dyes,it was found that 1 had better degradation efficiency on rhodamine 6G and crystal violet,and 3 put up better degradation efficiency to rhodamine 6G,rhodamine B,bromocresol green,eosin Y,and crystal violet,which shows that 1 and 3 have potential application value in dye degradation treatment.Secondly,by using H3L and four other nitrogen-containing co-ligands:1,10-phen?1,10-o-phenanthroline?,2,2'-bipy?2,2'-bipyridine?,bip?1,4-bis?pyridin-4-yl?benzene?and 4,4'-bipy?4,4'-bipyridine?,and zinc nitrate hexahydrate?cadmium nitrate tetrahydrate,four novel coordination polymers with d10 electron configuration were synthesized by hydrothermal method:[Zn?HL??1,10-phen??H2O?]n?5?,[Zn2?HL?2?2,2'-bipy?2]n?6?,[Cd3?L?2?bip?2?H2O?6·2H2O]n?7?,[Cd?HL??4,4'-bipy??H2O?]n?8?.Among them,5 and 6 have 1D chain-like structures,7 possess 3D structure and 8 is a 3D layered structure.Fluorescence experiments show that 5 and 6have a certain selective recognition effect on Ni2+and MnO4-,Cr2O72-;7 and 8 can selectively recognize Ag+,Co2+,CrO42-,Cr2O72-,simultaneously,these four original coordination polymers are all have particular recognition function on nitrobenzene and nitromethane.Mechanism studies suggested that fluorescence quenching is related to competitive energy absorption and electron transfer.The results show that these coordination polymers have potential application value in detecting ions and identifying small molecules in solvents.At last,we synthesized a 3D main group metal coordination polymer:[Pb4?L?2?OH-?2]n?9?,using H3L and lead nitrate hexahydrate under hydrothermal conditions.9 has a three-dimensional supramolecular structure formed by?···?stacking interaction.The fluorescence test showed that 9 has a certain selective recognition effect on Cu2+,MnO4-,acetone,nitrobenzene,and nitromethane. |
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