Font Size: a A A

Design, Synthesis,Structure And Application Based On Carboxylate Ligands And N-Donor Ligands Coordination Polymer

Posted on:2015-02-06Degree:MasterType:Thesis
Country:ChinaCandidate:Y F GaoFull Text:PDF
GTID:2251330428984740Subject:Materials Physics and Chemistry
Abstract/Summary:PDF Full Text Request
22coordination polymers have been synthesized based upon carboxylate ligands (H4dbpa, H2cpob, H2pdda BDC, BTC)and nitrogen-containing ligands (tib, tdp, bpy) in this work under hydrothermal/solvothermal conditions for assembly with metal ions. The crystal structures of coordination polymers were determined by X-ray crystallographic methods and all of them were characterized by elemental analysis, infrared spectroscopy, thermal gravimetric analysis and fluorescence spectroscopy. Further more; some of them were conducted applied research. This thesis could be divided into four chapters:1, Six novel coordination polymer, which were assembled by carboxylate ligands (H4dbpa) with a variety of nitrogen-containing ligands, obtained by the solvothermal and hydrothermal synthesis. By adjusting the nitrogen-containing ligands and pH, the crystal structure corresponding changes. One of the complexes was characterized by SQUID-VSM magnetometer and the reslut showed that the interaction between the metal center is antiferromagnet.2, Two series of lanthanide-based coordination polymers have been prepared under hydrothermal conditions by changing the temperature, leading to structural change from one-dimensional to three-dimensional. Temperature-dependent XRD patterns for1D compounds indicate that the1D polymers transform to the3D coordination polymers upon heating the solid sample. Moreover, we provided evidence that single crystals of1D can be transformed into crystals of3D without any significant change in crystal quality. Based upon single crystal-to-single crystal transformation, accordingly, the luminescence properties for the two series of coordination polymers catch a great change.3, A super thermal stable novel3D microporous compound [Mg(pdda)(DMF)]n (Mg-MOFs) with uncoordinated nitrogen atom pointing to the interior of pores is abtained. The uncoordinated nitrogen atom in the channels can act as a key role for exploiting its unique properties. The particular electron-conjugated systems of the MOF are good chromophores for the efficient luminescent sensitization of Eu3+. This result demonstrates that the MOF can effectively and selectively serve as an sensor for sensitizing the Eu3+in water solution.4,4excellent performance MOFs were synthesized based upon nitrogen-containing ligands (PPDA, TIB) with the carboxylate ligands (BCD, BTC) which achieve a certain degree of regulation of the structure of MOFs. Three MOFs pore size in the nano scale range, more interesting is to get a chiral space group of MOFs. Provide a basis for follow-up study.
Keywords/Search Tags:Carboxylate ligands, Coordination polymer, Rare earth luminescent, Lanthanide ion sensing
PDF Full Text Request
Related items