摘要
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.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第11期1588-1592,共5页
Journal of Functional Materials
基金
国家自然科学基金青年科学基金资助项目(51103120)
苏州科技学院2011年度研究生科研创新计划资助项目(SKCX11S-055)
关键词
双修饰
磁性
量子点
双功能纳米结构
dual-modified
magnetic
quantum dots
bifunctional nanostructures
