Synthesis and characterization of multifunctional magnetic- fluorescence composite nanoparticles

摘要

A possible synthesis mechanism of magnetic nanoparticles nickel, prepared by chemical reduction with hydrazine hydrate in ethylene glycol was obtaind. On this basis, different modifiers were used to improve the surface condition of magnetic nanoparticals, resulting to the good dispersion and stability of magnetic nanoparticles and with being more easily outer coated. Then the shell material CdTe was fabricated to the surface of magnetic cores, by layer-by-layer method. The multifunctional Ni/CdTe QDs with magnetic and fluorescent properties were achieved.