| In this work,triphenylamine and fluorene were used as the basic building units of ligands,and three ligands were synthesized:4,4'-??4-?1H-imidazol-1-yl?phenyl?azanediyl?dibenzoic acid?H2TPI?,4,4'-??4-bromophenyl?azanediyl?dibenzoic acid?H2TPB?and 2,7-di?pyridin-4-yl?-9H-fluorene?DPFE?by introducing carboxylic acid and nitrogen-containing coordination group.The compounds were characterized by X-ray single crystal diffraction,PXRD,thermogravimetric analysis,ir and elemental analysis.At the same time,the electrochemical,photocatalytic and fluorescence properties of the compounds were studied.1.Synthesis,structure and electrochemical properties of triphenylamine/fluorene ligand compoundsThree coordination polymers were synthesized by hydrothermal method using the ligands DPFE H2TPB and H2TPI:{[Cu2?TPB?2]·2H2O}n?1?,{[Co2?TPI?2]·2H2O}n?2?and{[Co3?DPFE?2?sbda?4?OH?2]·?DPFE??CH3CN?}n?3?.Compound 1 is a 2D layered structure.2 is a 3D structure;Compound 3 was synthesized with reference.The electrochemical properties of carbon composites?BPC?made of 1 and compounds 1-3were studied.When the current density is 0.5 A g-1,the specific capacitance values of the working electrodes of 2,3 and BPC-900 are 85.25,53.86 and 120.3 F g-1,respectively.At the same time,the photocatalytic properties of 3 were studied.After 135min of light irradiation,about 91%of methylene blue?MB?was degraded by 3.2.Study on synthesis,structure and fluorescence properties of triphenylamine/fluorene ligand compoundsThree coordination polymers were synthesized by hydrothermal method using the ligands DPFE and H2TPI:{[Cu2I2?DPFE?2?PPh3?2]}n?4?,{[Eu?TPI??tpa?0.5]·2H2O·DMF}n?5?and{[Tb?TPI??tpa?0.5]·2H2O·DMF}n?6?.Compound 4 is a zero dimensional structure;Compounds 5 and 6 are isomorphic and both are 3D structures.Through the study of nitro compound recognition experiment of compound 4,4-nitrobenzaldehyde?4-NBA?,4-nitroacetophenone?4-NAP?and4-nitrotoluene?4-NT?have better fluorescence quenching effect on 4.Compound 4 can also be used as a fluorescent temperature sensor through the study of the fluorescence experiment with variable temperature.In addition,their colors can be reversibly converted from red to yellow at different temperatures,so it was also suitables as colorimetric fluorescent probes.At the same time,compound 4 can also be used as a photocatalytic degradation dye material.After 135 min of illumination,about 93%MB?10 ppm?is degraded by 4.A series of fluorescence identification experiments on compound 6 showed that Al3+,Fe3+,Cr3+,4-nitrobenzaldehyde?4-NBA?and4-nitrotoluene?4-NT?had a certain quenching effect on the fluorescence of complex 6. |
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