Structures And Properties Of Metal-organic Frameworks Constructed From Tricarboxytriphenylamine

Metal-organic frameworks(MOFs)have attracted much attention by scientific community for its designable frameworks,large surface areas,tunable pore sizes and shapes and simply synthesis method.In this thesis,we are tring to synthesize functional MOFs by increasing the chain length of organic ligands and the sptial volume of organic ligands.We have synthesized 12 new MOFs based on tricarboxytriphenylamine and neutral bridging organic ligands and investigated their structures as well as their properties.There are six chapters in this thesis.The first chapter mainly introduces the method of synthesis,the influencing factors and the application of MOFs.The second chapter,three kinds of different MOFs:[Cd2(TCA)4(bmb)3](compound 1),[Mn3(TCA)2(bmb)]DMA(compound 2),[Ni(TCA)2(bmb)2(H2O)]·4H2O(compound 3)solvothermally synthesized with tricarboxytriphenylamine and 1,4'-bis(1-imidazolyl)phenyl).Compound 1 shows strong dye adsorption,and can detect nitrobenzene compounds,Cu2+,Cr(VI),salicylic aldehyde.The third chapter,three kinds of different MOFs:[Cd1.5(TCA)(bimb)0.s](compound 4),[Co2(TCA)4(biMb)4(H2O)]DMA(compound 5),[Ni2(TCA)4(bimb)4(H2O)]DMA·H2O(compound 6)solvothermally synthesized with tricarboxytriphenylamine and 4,4'-bis(1-imidazolyl)biphenyl.Compound 4 has strong fluorescence and its emission wavelength can shift in water,ethanol and methanol.Compound 4 also shows high selectivity adsorption of MO.At room temperature,compound 4 can selectivity separation to CO2/CH4 and CO2/N2.The fourth chapter,three kinds of MOFs:[Mn2(TCA)6(bibp)2](compound 7),[Mn2(TCA)6(bibp)(H2O)](compound 8),[Co2(TCA)6(bibp)2]DMF·3H2O(compound 9)solvothermally synthesized with tricarboxytriphenylamine and 4,4-(bis(imidazol-1-ylmethylene))biphenyl.The synthesis process of compound 7 and compound 8 are the same and they were obtained in a one pot by reaction of cocrystallization which show different shape and structure.At room temperature,compound 9 shows selectivity adsorption of CO2.The fifth chapter,three kinds of MOFs:[Cd2(TCA)2(PETPE)4(DMA)(N03)](compound 10),[Ni2(TCA)4(PETPE)3]·3H2O(compound 11),[Cu4(TCA)6(PETPE)3(H2O)2](compound 12)solvothermally synthesized with tricarboxytriphenylamine and 4-pyridyloxymethylene)methane.Compound 10 shows strong fluorescence,which can detect nitrobenzene compounds,Cr(VI)and Cr3+.The sixth chapter gives a summary of the results,innovation of this research,the prospects for structure and the function of the MOFs.