采用共沉淀法制得Fe3O4溶胶,用γ-缩水甘油醚氧丙基三甲氧基硅烷(KH-560)对其表面进行改性,制得有机硅改性的纳米Fe3O4磁性粒子；用L-半胱氨酸盐酸盐(L-Cys)将油相的CdSe/CdS转成水相并带上氨基的CdSe/CdS纳米晶；将其复合制备了Fe3O4/CdSe/CdS荧光磁性双功能纳米复合物颗粒.该Fe3O4/CdSe/CdS复合物颗粒平均尺寸约为40nm,饱和磁化强度为21.287A·m2/kg,该纳米粒子既具有优异的荧光特性,也具有较强的超顺磁性.%Fe3O4 magnetic nanoparticles were prepared using hydrothermal coprecipitation process of ferric and ferrous ions.The as-prepared nanoparticles were further modified by γ-(2,3-epoxypropoxy)propytrimethoxysilane (KH-560) to obtain silicone modified Fe3O4 nanoparticles.Also,the water-soluble CdSe/CdS bearing amino have been synthesized using L-cysteine hydrochloride (L-Cys) as stabilizer,At last,CdSe/CdS were linked to Fe3O4 to form luminescent/magnetic bifunctional nanoparticles.The as-prepared composites with a typical diameter of 40nm show 21.287A · m2/kg of saturation magnetic susceptibility.Such material still retains a strong photoluminescence effect of CdSe/CdS quantum dots and also exhibits a typical superparamagnetic behavior of Fe3O4 nanoparticles.
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