二茂铁酰腙镍配位聚合物热解产物的表征

Characterization of Products by Pyrolysis of Ferrocenylacylhydrazone-Nickel Coordination Polymer

二乙酰二茂铁间苯二甲酰腙与NiCl2·6H2O在DMSO中反应合成了二乙酰二茂铁间苯二甲酰腙镍配位聚合物(PFZNi),将其在空气中高温(500～1200℃)热解,并用XRD、XPS、SEM和超导量子强磁计(SQUID)对热解产物进行表征。结果表明,产物是一种纳米NiFe2O4·Fe3O4混合型反尖晶石结构的铁磁相固溶体。在5K及300K时,产物有较高的饱和磁化强度(分别为42.57和39.05emu·g-1)和较低的剩磁(分别为6.87和6.27emu·g-1),其磁参数随热解温度而增加。

A diacetylferrocenyl isophthalicdihydrazone-Nickel coordination polymer （PFZNi） was synthesized using diacetylferrocenylisophthalic dihydrzone and NiCl2-6H2O as the raw materials in DMSO solvent, and then it was pyrolyzed at high temperatures （500-1 200℃） under air, the product was characterized by XRD, XPS, SEM and SQUID. It is found that the product prepared by pyrolysis was a ferromagnetic solid solution with the mixedtype inverse spinel microstructure of nanocrystalline NiFe2O4·Fe3O4. When magnetized by an external field at 5 K and 300 K, it exhibits a higher saturation magnetization （Ms=42.57 and 39.05 emu·g^-1） and lower residual magnetism （Mr=6.87 and 6.27 emu·g^-1）, respectivity, their magnetic parameters increse with pyrolysic temperature.