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中文摘要：
利用反相微乳法，以巯基乙酸修饰的水溶性CdTe量子点为核，包覆SiO2，制备得到核壳型CdTe@SiO2荧光纳米复合粒子．用紫外-可见（UV-vis）分光光度计，荧光（PL）分光光度计，红外（FT—IR）光谱仪，透射电子显微镜（TEM）等分析测试手段，对得到的荧光纳米复合粒子的性能进行表征，结果表明：得到的CdTe@SiO2纳米复合粒子是核壳型结构，由SiO2壳层包覆多个量子点，其大小均匀，水溶性好，有效地提高了量子点的稳定性，大大增强了其抗光漂白性能，为该材料的进一步生物应用打下了良好的基础．
英文摘要：
CdTe@SiO2 core/shell luminescent composite nanoparticles were synthesized by the method of reverse microemulsion to coat SiO2 on water-soluble CdTe QD （quantum dot） cores. And the properties of the as-prepared nanoparticles were characterized by different ways including ultraviolet spectra （UV-vis）, fluorescence spectra （FL）, FT-IR spectra, and transmission electron microscopy （TEM）. The results indicated that the as-prepared nanoparticles had a core/shell structure in which multi-QDs were encapsuled in a single composite nanoparticle. Moreover, the homogeneous nonoparticles had excellent water solubility as well as improved stability and photobleaching resistance. The approach introduced in this paper lays a solid foundation for the biological applications of the nanoparticles.
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