功能化ZnS∶Mn/ZnS纳米微粒的制备及光学性质的研究  

Synthesis and Optical Properties of Functionalized ZnS∶Mn/ZnS Nanoparticles

作　　者：汪寅强[1] 李冬梅[1] 桑文斌[1] 姚渊[1] 杨国威[1] 

机构地区：[1]上海大学材料科学与工程学院电子信息材料系,上海200072

出　　处：《人工晶体学报》2007年第4期759-763,736,共6页Journal of Synthetic Crystals

基　　金：教育部高等学校优秀青年教师教学科研奖励计划资助项目;上海市重点学科项目(T0101)资助

摘　　要：本文采用反相微乳液法制备了核壳结构的ZnS∶Mn/ZnS纳米微粒。为了获得具有一定水溶性及生物相容性的纳米颗粒,巯基乙酸被直接加入到反相微乳液体系中对ZnS∶Mn/ZnS纳米颗粒进行表面改性。连接上巯基乙酸的ZnS∶Mn/ZnS纳米微粒在600nm处的光致发光明显增强。实验结果显示导致荧光增强的机理可能是有机分子及多核锌配合物的钝化作用。　ZnS∶Mn/ZnS core/shell nanoparticles were pre-synthesized by microemulsion technique.To prepare water-soluble and biocompatible nanoparticles,thioglycolic acid was directly added into the same reverse microemulsion system to modify the surface of ZnS∶Mn /ZnS nanoparticles.The functionalized ZnS∶Mn /ZnS nanoparticles were coupled with carboxyl and revealed further luminescence enhancement at 600nm.The experiment results indicat that passivating of the organic molecules and the polynuclear complex of Zinc may be the possible mechanism leading to enhancement of luminescence.

关 键 词：微乳液 纳米微粒 ZnS∶Mn/ZnS 巯基乙酸 光致发光 

分 类 号：O472[理学—半导体物理]