Based On The Study Of The Properties Of Diketone Porous Materials

The ?-diketone compound is a good metal chelating agent which has a plurality of strongly coordinating oxygen atoms and thus forms a stable complex with metal ions.?-diketone compounds have potential applications in magnetic materials,optics,catalysis,gas storage,and fluorescent device materials.The design,synthesis,structure and performance of such compounds have gradually become a research hotspot in the fields of coordination chemistry and materials science.In this paper,the?-diketone MOC and COFs were synthesized by experiments.Both materials have excellent porosity and stability,and their catalytic properties were studied?.An example of a metal organic cage{Cu(?)-MOC(1)} was obtained using a?-diketone organic ligand and Cu(OAc)2 under solvent diffusion conditions.It is a homogeneous catalyst and can efficiently catalyze the A3-coupling reaction in an organic solvent.By adding 1;4-dioxane to the reaction liquid,Cu(?)-MOC(1)can easily form insoluble Cu(?)-MOF(2),and the recycling of 1 is completed Cu(?)-MOF(2)is unstable in organic solvents and can be regenerated to form Cu(?)-MOC(2).This 1-to-2-to-1 process is reversible and is driven by coordination.The way to achieve homogeneous phase heterogeneous recovery?.A novel type of Salen-COF was synthesized under solvothermal conditions using?-diketone organic ligand and o-phenylenediamine,and Pd(?)-Salen-COF was synthesized by solution impregnation.It has been proved by PXRD,TGA,BET and ICP to have excellent crystallinity,thermal stability and porosity,and high Pd(?)loading.Pd(?)-Salen-COF acts as a highly active and reusable heterogeneous catalyst.It catalyzes Suzuki coupling,has mild reaction conditions and high yield,and can be recycled at least five timesThe results of this study indicate that the two diketone pore materials have good catalytic performance and recyclability,which provides a new direction for the synthesis of new multifunctional catalysts.