organic-inorganic hybrid nanomaterials prepared from 4- formyl benzo-12-crown-4-ether and silica coated magnetite nanoparticles

silica  coated magnetite  nanoparticles were  covalent  grafted with  3-aminopropyl trimethoxysilane  to give aptscmnps. reaction of  the resulted nanomaterial with 4-formyl benzo-12-crown-4 ether afforded fb12c4/aptsmnps  nanocomposite  material  in  which  the  crown ether  moiety  was  attached  through  propyl  chain  spacer. characterization of  the prepared nanocomposite was performed with different  physicochemical  methods  such  as  ft-ir  spectroscopy, thermogravimetric  analysis  (tga-dta),  x-ray  diffraction  (xrd), scanning  electron  microscopy  (sem),  transmission  electron microscopy (tem) and vibrating sample magnetometry (vsm).