Structures And Fluorescent Probe Properties Of Metal Complexes Constructed Fom Tetrazolium Ligands

Metal-organic coordination polymers are a class of crystalline materials with periodic network structures which constructed by the assembly of metal ions/metal clusters and organic ligands.They combine inorganic and organic advantage,as well as possessing multiple architectures which make them become a new type of functional materials.Meanwhile,compared with traditional materials,the functional groups of coordination polymers can be rationally extened and modified,the structures and properities can be designed and regulated,which further broaden their application range.Therefore,the applications of coordination polymers in heterogenous catalysis and gas storage/separation of porous materials,as well as their promising applications in various fields,such as molecular magnetism,optical properities,energy storage,photoelectric conversion and chemical sensing.In this thesis,we aim to construct coordination polymers with novel structures and properities by utilization of functional ligands,and investigate their application in fluorescence detectionThe main contributions in this thesis are summarizes as follows:1 The synthesis of functional organic liands: two rigid of tetrazolium organic ligands were prepared by conventional organic synrhesis means,including4-(1H-tetrazol-5-yl)phenol(H2L)and 1H-tetrazol-5-yl)-benzoic acid(H2TBA).The N atoms of tetrazene ring have strong coordination abilities and various coordination patterns,and extremely easy coordinate with metals/metal clusters,which may facilitate the construction of pore/chain structures.In additional,this type of ligands is an electron-rich fluorescent ligand with aromatic ? rings,which constructed coordination polymers with d10 metals possessing excellent luminescent properity.2 Synthesis and investigation luminescent probe properities of three dimensional(3D)coordination polymer: a novel three-dimensional coordination polymers Pb3O2L(1)has been constructed under hydrothermal conditions by using H2 L ligand and Pb2+ion.Compound 1 possesses excellent fluorescence and stability properities,and its micrometer – sized can be used to detecte Fe3+ ion and nitro explosives in aqueous solution.Comound 1 as the fluorescent sensor of Fe3+ exhibiting excellent recycle performance and luminescent test plates broaden its potential application in detection Fe3+ ion.3 Synthesis and investigation luminescent probe properities of two-dimensional(2D)coordination polymers: two novel two-dimensional coordination polymers Zn2(NO3)2(4,4-bpy)2(TBA)(2)and Zn(DMA)(TBA)(3)have been constructed under solvothermal conditions by using H2 TBA ligand and Zn2+ ion.Compound 2 and compound 3 can detect nitro explosives and Fe3+and Al3+,respectively.Compound 2shows highly sensitivity and selective detection for trace amounts of Fe3+ ion via fluorescence quenching(turn off),while Compound 3 exhibits highly sensitivity andselective detection for trace amounts of Al3+ ion via fluorescence enhancement.(turn on)...