Synthesis,Structure And Fluorescent Property Of Metal-organic Coordination Compounds Containing Quinoline And Imidazole

Recently,more and more people pay attention to coordination compounds benefiting from molecular structure and characters by itself in the area of molecular material.The choice of ligands play an vital role in the prosperity and functionality,especially the inherent essence of ligand also present in the complexes.The character of complex becomes unique and charming due to the comprehensive effects of rigid ring and electronic effect,which aromatic organic ligands containing heteroatom,posses itself characteristics.It is also good source of ligangs to form mental-organic complex,which often own special properties,such as light,electricity and ferroelectricity,is one of the most important member of material family.The new luminescent material based on fluorescence,which has extensive prospects,such as acting as biological probe,solid catalyst and ion exchanger.The thesis bases on 8-aminoquinoline,imidazole and its derivatives,which has something link to the luminescent properties of coordination compounds.The material base on 8-aminoquinoline and its derivatives,which the ultimate three coordination compounds Compound 1[Zn（8-aql）4]（ClO₄）₂?2H₂O,compound 2[Zn（8-aql）₂[N₃]?ClO₄ and compound3{Zn[8-ahsb]（N₃）₂} can be produced by the synthesis of solvent-evaporation and solvent-thermal methods;Theses two single crystals can be tested by CCD single-crystal diffractometer,elemental analyzer and IR spectrum detector.In addition,We do a research on solid fluorescent properties via fluorescent spectrum,which indicate complex 1has two emission peaks on the location of 459 nm and 510 nm,this emission peak belongs to two different electron transition,the electron transition between metal and ligand or the electron transition between ligand and ligand;and the emission peak of complex 2 at 516.4nm due to the electron transition between ligand and ligand.These two complex all have strong fluorescence,which can be the storage of luminous material.To further study the influence sectors of solution containing complex,we regard the complex 1 as the object,which are based on different organic solvents of various physical property parameter.The outcome suggest that ordinary effect of solvent is the major infection of peak position,weak mutualfunction such as hydrogen bond also affect the wavelength of emission and intensity.At last,we also discuss the detective property of organic molecule and inorganic metal,which indicate complex 1 and 2 can recognize the nitrobenzene and mercury ion.Complex 3 can be produced by modificatory ligand and zinc ion through the solvent-thermal reaction.Due to the flexibility of 8-aminoquinoline,we can get specific structure.We measure it by fluorescence test and other measurements.The experiment found there is a peak position on the 600 nm,which ascribe the interaction between ligand and ligand.These complexes have high luminescence intensity owning to the self-character.Furthermore,We grope the relation between the effect of solvent and luminescent intensity,which obviously reflect the recognition of organic compound and inorganic metal ion,then nitrobenzene and copper（Ⅱ）ion can be measured by the combination between complex and solvent.The four novel complexes base on the raw material of modifying imidazole and copper（Ⅱ）ion,which produced by self-assembly,during the reaction,copper（Ⅱ）restored by cyanide ion,its molecular formulas are Cu₄（CN）₄（bix）₂,Cu₂（CN）₂（bmimb）,Cu₂（CN）₂（bmimb）,Cu₃（CN）₃（bimb）},The architecture of four single crystals are measured by IR,element analyzer,CCD single crystal diffraction instrument,thermal analyzer and fluorescent analyzer,which identify this type presents intriguing 2-D or 3-D reticulate structure through the interaction between molecule and molecule,compound 5 and compound 6 are isomeride,the structure of compound 4 and compound 7are different from above geometric isomer because of the environment of reaction,which indicate the coordination environment play an important role in the system of solvent.The successful synthesis based on CuCN indicate the multifarious space structure of four novel complexes are limited to the organic ligands which are be modified and the solvent which are following with the reaction.Complex 4-7 have different emission peaks in the region about 553-563 nm via solid fluorescent test.We also measure complex 4-7 by thermal analyzer,which still have weight after high temperature,have the characteristics of strong thermal stability and fluorescence.In addition,complex 4-7 also act as the substituted materialof noble metal coordination compound.We can get seven single crystal of different structures which are self-assembly by various ligand and zinc（Ⅱ）ion or copper（Ⅰ）ion,which identify the structure of complexes and also study the solid fluorescence spectrum separately.The results reveal these seven coordination compounds all have strong luminescent emission,which is the potential source of luminescent material.The fluorescence of complex 1-3 dissolving in organic solvent can be an important index in the aspect of detection,and the synthesis of complex 4-7 is green to environment.