| The construction of novel coordination polymers continues to attract great attention due totheir potential applications in microelectronics, non-linear optics, porous materials, andmagnetic properties, as well as their intriguing variety of architectures and topologies. Withinthis area, an important subject is the investigation of network topology, which not only is apowerful tool for simplifying the structure of complicated frameworks but also plays aninstructive role in the rational design of certain functional materials with desirable properties.In this paper, the thirteen metal-organic frameworks have been synthesized underhydrothermal conditions and characterized by single-crystal X-ray diffraction andthermogravimetric analysis. According to investigation, it is found that it is crucial forsyntheses of metal-organic frameworks to choose the difference of metal ions Furthermore,photoluminescent properties has also been studied. The main contents are summarized asbelow:1. We have successfully synthesized three novel compounds by combining4-（pyridin-4-ylmethoxy）benzolic acid ligand. Meanwhile, it exhibits intense fluorescence atabout402nm in the solid state. Complex2is a2D square （Edge length is15.43anddiagonal is21.99） with （44·62） topology. The structure of3is a2D4-connected net with（44·62） topology. Compound5displays a3D8-fold interpenetrating structure withdiamondioid framework containing large adamantanoid cages. In addition, powder X-raydiffraction and thermogravimetric analysis for5are also investigated in detail. Furthermore,compounds2,3and5shows good fluorescence properties in the solid state at roomtemperature.2. Reactions of1,4-bis（pyridin-4-ylmethoxy）benzene （1,4-pyb） and zinc acetate saltswithdifferent multi-caboxylate acid:1,4-benzenedicarboxylic （p-H2BDC）, isophthalic acid（m-H2BDC） and benzene-1,3,5-tricarboxylic acid （H3BTC） yield four entangled structuresand one3D supramolecular framework depending on pH variation. The structures ofcompounds4,6,7,8and11were elucidated by single crystal X-ray diffraction. Topologyanalysis revealed the entangled structures of compounds4,6,7,8and11covered a range ofpolythreading, self-penetrating and interpenetrating coordination. Interestingly, thepolythreaded arrays with cyclohexane-like windows in chair conformation in compound8were firstly observed. What’s more, compound11exhibited a rare eight-connectedself-penetrating network based on trinuclear zinc clusters as nodes with424·64topology.Photoluminescent properties and thermogravimetric analyses for4,6,7,8and11, were alsoinvestigated in detail.3. Five new compounds have been synthesized on the basis of2,2’-（naphthalene-1,5-diylbis（oxy））diacetic acid and d10transition metal ions. Fivemetal-organic frameworks, namely,[Zn（ndd）（phen）（H2O）]n（1）[Zn3（4,4’-bipy）（ndd）2.5（μ3-OH）]·2H2O.（9）,[Cd（BIMB）（ndd）]n（10）,[Cd（DIMB）（ndd）·2H2O]n（12） and [Cd（ndd）（phen）]n（13）, where H2ndd=2,2’-（naphthalene-1,5-diylbis（oxy））diaceticacid,4,4’-bipyridine （4,4’-bipy）,1,4-di（1H-imidazol-1-ly）benzene （DIMB）, 1,4-bis[（1H-imidazol-1-ly）methy]benzene （BIMB） and phen=1,10-phenanthroline, havebeen synthesized under hydrothermal conditions and characterized by single crystal X-raydiffraction analyses, powder X-ray diffraction and thermogravimetric analysis. Topologicalanalysis reveales that the compound9is a new （4,8）-connected self-catenated network withpoint symbol of （32·42·52）（32·49·512·65）2based on the trinuclear zinc clusters as aeight-connected node.10is an eight-connected self-catenated network with ‘ilc’ topology and12is a6-connected ‘pcu’ network. Photoluminescent properties and thermogravimetricanalyses for9,10and12, were also investigated in detail. Compound1can be described as a3D supramolecular architecture formed via the strong π–π interactions. While, compound13,obtained by changing the metal ions, exhibits a3D metal-organic frameworks of PtS topologywith the square window （the dimensions is11.454×25.847）. The different structures of1and13indicate that metal ions have significant effects on the final complexes. Moreover,these compounds show good fluorescence properties in the solid state at room temperature. |
