科研之友
微信
新浪微博
Facebook
分享链接
摘要
The oil-soluble magnetic Fe3O4, nanoparticles with uniform size and morphology were synthesized via thermal decomposition of Fe (acac)(3) precursor. They were successfully transferred into aqueous phase through the ligand-exchange reaction with water-soluble PEG diacid molecule, forming water-soluble, stable, nontoxic, and magnetic composite with surface functional group. TEM, M-H curve, FTIR and TGA were used to characterize the as-synthesized composite and demonstrated that the nanoparticles maintained their super-paramagnetism and biocompatibility. alpha-Chymotrypsin(alpha-ChT) was immobilized on the surface of the water-soluble nanoparticles. The immobilized alpha-ChT exhibited better thermal stability and high activity after repeated usage.
