| The Metal-Organic Frameworks have won more and more concerntration because of their various structure and multifunctional properties.The work of our team mainly focus on the MOFs which are constructed by aromatic carboxylic acid, neutral bridging ligands and transition metal ions, including the properties of the gas adsorption, photocatalytic degradation and fluorescence detection.This paper describes the structure of 13 MOFs which are constructed by D-camphor acid, conjugated thiophene dicarboxylic acid and aromatic tricarboxylic acid and related properties including fluorescence detection of organic solvent, the photocatalytic degradation of dye, dye adsorption and magnetic properties.The first part describes the research development of MOFs are constructed by D-camphor acid, conjugated thiophene dicarboxylic acid and aromatic tricarboxylic acid.The second part shows two different kinds of MOFs which are constructed by D-camphor (cpa) and 4,4’-bis (1-imidazolyl) biphenyl (bimb), [Co2(cpa)4·(bimb)4]n (Compound 1), [Mn2(cpa)4·(bimb)4]n (Compound 3) and [Cdg(cpa)g(bimb)4]n (Compound 2). Compounds 1 or 3 form a mutual chiral 2D layered network architecture. Compound 2 has four Cd2(OCO)4 secondary building unit (SBU), Compound 2 can be reduced to a uninodal 6-connected hxl net. Compound 2 showed strong fluorescence intensity, can detect organic small molecule, nitrobenzene, copper ion and methyl parathion. Compound 1 and 2 has good adsorption effect for methyl orange (MO) and methylene blue (MB) with good structural stability.The third part shows 6 MOFs which are constructed by conjugated thiophene dicarboxylic acid (1,5-Dithia-S-indacene-2,6-dicarboxylic acid) (bdba) and neutral bridging ligands including imidazole and Pyridine. [Zn(bdba)(bix)(DMF)3]n (Compound 4) and [Cu(bdba)(bix)(DMF)4]n (Compound 5) have 2D network, [Co3(bdba)3(bix)2]n (Compound 6) and [Co3(bdba)3(bix)2]n (Compound 8) are heterogeneous isomorphism with Co2(OCO)3 and Cd2(OCO)3 secondary building unit (SBU).they can be reduced to a bct topology structure with uninodal 10-connected net. [Zn2(bdba)2(bbi)2]n (Compound 7) is a 3D nets with a cavity of 5.347 x 3.258 A2 in the direction of c axis. In [Cd4(bdba)4(PETPE)3]n (Compound 9), Cd2+ is seven coordinated to form tortile pentagonal bipyramid, by PLATON calculation, Compound 9 has 78% effective porosity, having two cavity of 4.354×5.117 A2,4.901 x 7.210 A2 in the direction of c axis. Compound 7 showed strong fluorescence intensity, can detect nitrobenzene and copper ion with the relatively low detection limit. Compound 6 shows a strong antiferro-magnetic interaction with a nonbonding Co…Co distance is 3.565 A. Compound 8 show effectively photo degradation property for X3B dyeThe forth part shows 4 MOFs are constructed by aromatic tricarboxylic acid. The [Co(H3cpia)(bimb)(H2O)2]n (Compound 10) can be reduced to a pcu topology structure with uninodal 6-connected net. The [Zn(H3cpia) (bimb)(H2O)2]n (Compound 11) can be reduced to a sql topology structure with uninodal 4-connected net. The [Co3(H3cpia)2 (bix)3·8(H2O))]n (Compound 12) has new topology structure which can be reduced to three node (3,4,5)-connected net. The [Cu3(H3cpia)3(bix)·2(H2O)2·2(O)]n (Compound 13) has paddle-wheel [Cu2(OCO)4] secondary building unit (SBU) are constructed by Cu2 and four carboxyl. Every SBU is linked by cpia3" anion to form 3D structure. And it has new topology structure which can be reduced to three node (3,4)-connected net. |
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