| Metal-organic frameworks （MOFs） as a newly-identified functionalmolecule-based materials, have attracted much more attentions because of theirflexible tailoring, various topologies and promising applications in hydrogen storage,ion-exchange, adsorption, molecular recognization, catalysts along with optics,electrics and enantioselective separation. According to the principle of molecularengineering, it is possible that rational design and synthesis of novel multifunctionalmaterials by selecting certain geometric metal ions and special organic ligands. At thesame time, MOFs can be endowed with multifunctional properties by selectingfunctional metal ions and organic ligands with functional groups.In this dissertation, we have focused our study on the influence of the metal ions,organic ligands and secondary ligands on the building blocks and structures of MOFsby the hydrothermal reaction. Twenty-one new coordination compounds have beensynthesized by using novel organic ligands and metal ions. The study on syntheticconditions and rules for these new compounds, topological analyses, and theexploration of relationships between structures and properties for these newcompounds are also carried out. These compounds have been structurallycharacterized by elemental analyses, IR, XRPD, TG and single crystal X-raydiffractions. In addition, the thermal stabilities, fluorescent activity, photovoltagetransients, adsorption and ion-exchange of these compounds have been studied.1. Ten novel3D compounds,[Cu（HL1）（BIMB）]·0.5H2O （1）,[Pr（HL1）（BIMB）]·H2O （2）,[Zn（HL1）（BIMB）0.5]·H2O （3）,[Zn3（L1）2（BIMB）3]·8H2O（4）,[Zn3（L1）2（BIMB）3]·4H2O （5），[Zn2（HL1）2（BIIM）2]·H2O （6）,[Cu2（HL1）2（BIIM）2]·H2O （7）,[Cu（L1）（BIIM）0.5（H2O）]·H2O （8）,[Cu2（L1）（BIIM）（μ3-OH）]·3H2O （9） and [Cu1.5（L1）（BIIM）1.5]·2H2O （10） have beensynthesized using the traditional hydrothermal methods. Compound1,2and3showsa2D4-connected network. Complex4is obtained on a higher pH value than3, whichis3D threefold interpenetrating （3,4）-connected net. Compound6and7is a2D （4,4）sheet with （412·63） topology. Compound8and10displays a3D （3,4）-connectedthreefold interpenetration network, which is constructed by H3L1and BIIM ligands.Compound9is a3D （3,10）-connected network.2. Five compounds with different dimensionalities,[Zn （HL1）（BENIM）]（11）, [Co （HL1）（BENIM）]（12）,[Co2（HL1）（BENIM）2（μ3-OH）]·H2O（13）,[Co1.5（L1）（1,2,4-triazole）（μ2-OH）]（14） and [Ni1.5（L1）（1,2,4-triazole）（μ2-OH）]（15）have been prepared under hydrothermal conditions. Compound11and12areisostructural; Compound14and15are isostructural. Compound11displays a new2Dframework constructed by two types of helical chains; Compound13is a2D（3,6）-connected net. Compound14is a3D （3,8）-connected network3. Two compounds with different dimensionalities,[Zn2（L2）（BIMB）（μ2-OH）]（16）and [Zn3（L2）2（BIMB）3]·4H2O（17） have been prepared under hydrothermal conditions.Compound16is a2D→3D interlocking framework. Compound17adopts a3D（3,4）-connected self-penetrating network.4.[Zn2（L3）（H2O）]·（NO3）·DMF（18） and [Zn2（L4）（H2O）]·（NO3）·0.2DMF（19）, twoisostructural2D-2D parallel-3D inclined interpenetrating polycatenane-likemetal–organic frameworks were successfully constructed based on length-adjustedtricarboxylate ligands. With the merit of being microporous, Compound18canserve as host for encapsulating lanthanide cations and I2to exhibit luminescentsensing and rapid adsorption of iodine. |
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