Ionothermal Synthesis And Characterization Of Novel Polymetallic Oxide-Based Organic-Inorganic Hybrid Layers

Polyoxometalate?POM?based hybrid organic–inorganic materials are of great interest for their potential applications in a wide range of fields including fuel cells,medicine,photocatalysis.These hybrid materials could offer a good chance to combine the unique properties of the organic and inorganic components in one single phase.And these properties of the hybrid materials depend on the connection of POMs and organic components.Owing to the fact that POMs have discrete and mobile ionic structure,POMs have been regarded as attractive candidates for proton conduction.In POM-based mixed organic-inorganic materials,the conductivity usually comes from ligand water and coordination water as a proton donor or carrier,which inspired us to apply proton conductors in a fuel cell,requiring a large amount and a high mobility of the proton carrier to achieve high proton conductivity.However,the synthesis of this material was one of the most challenging problems in synthetic chemistry.Since many materials are prepared under ionic thermal synthesis conditions,the ion thermal synthesis was considered as a more efficient and environmentally friendly synthesis method.In the paper,Two kinds of POM?indicated by the single crystal X-ray diffractometer are the target compounds?were prepared.Three organic ligands?confirmed by IR,solid-state UV spectroscopy,etc.?were used in the experiments.In the experiment,prepare the target crystal with the ion thermal synthesis.Two new hybrid organic–inorganic molybdates,namely?H4C3N₂?C6H4N?2N₂C3H4?2/?[Mo11O34]·H2O?1?and?H6C5N?CH2?3NC5H6?1/?[Mo4O13]?2?have been synthesized under ionothermal conditions,all based on ?[Mo_nO_3n+1]^2-?n = 11,4?and synthesized from Bis-?4-imidazol-1-yl-phenyl?-diazene and 1,3-Di-?4-pyridyl?-propane,respectively.[AgL][Mo^VMo₃^VIO₁₂]?3,L=BBTZ=1,4-bis??1H-1,2,4-triazol-1-yl?methyl?benzene?,an unusual organopolybdate polymer based on ?-[Mo₈O₂₄]^2-type anions,in which organic ligands and polyoxometalates?POM?were synthesized by ion thermal synthesis of the target compounds directly linked by Mo-N bonds.The crystallographs of the prepared crystals were characterized by a single crystal X-ray diffractometer,and their crystal data were obtained.Then,the crystal structure of the crystal structure was analyzed,and their internal structure was plotted by crystal drawing software.The resulting crystals were characterized by Raman,IR,XPS and other properties,and tested their proton conductivity,photocatalysis,gas adsorption and other properties.