Title of article :
Polyethyleneimine-modified super paramagnetic Fe3O4 nanoparticles: An efficient, reusable and water tolerance nanocatalyst
Author/Authors :
Hamadi, Hosein Department of Chemistry - College of Science - Shahid Chamran University, Ahvaz, Iran , Gholami, Maryam Department of Chemistry - College of Science - Shahid Chamran University, Ahvaz, Iran , Khoobi, Mehdi Department of Medicinal Chemistry - Faculty of Pharmacy and Pharmaceutical Sciences Research Center - Tehran University of Medical Sciences, Tehran, Iran
Abstract :
A novel magnetically immobilized polyethyleneimine (PEI) fabricated by covalently anchoring on silica coated Fe3O4 nanoparticles (PEI@Si-MNPs) was prepared. The synthesized catalyst was characterized by Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM). The immobilized PEI was shown to be an efficient heterogeneous catalyst for the synthesis of spiro-oxindole, benzopyranes and chromene derivatives via multi-component reaction (MCR), in water as a green solvent. The catalyst is readily recovered by simple magnetic decantation and can be recycled several times with no significant loss of catalytic activity.
Keywords :
Surface functionalization , benzopyranes , Magnetic Nanoparticle , Polyethyleneimine (PEI)
Journal title :
Astroparticle Physics
