化学学报 ›› 2008, Vol. 66 ›› Issue (8): 923-929. 上一篇    下一篇

研究论文

载有量子点的介孔二氧化硅微球的制备与性能研究

蔡杰1,任楠2,唐颐2,杨武利*,1   

  1. (1复旦大学高分子科学系和教育部聚合物分子工程重点实验室 上海 200433)
    (2复旦大学化学系和上海市分子催化和功能材料重点实验室 上海 200433)
  • 收稿日期:2007-08-10 修回日期:2007-11-07 出版日期:2008-04-28 发布日期:2008-04-28
  • 通讯作者: 杨武利

Preparation and Property of the Mesoporous Silica Microspheres Embedded with Quantum Dots

CAI Jie1 REN Nan2 TANG Yi2 YANG Wu-Li*,1   

  1. (1 Education Ministry Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science, Fudan University, Shanghai 200433)
    (2 Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433)
  • Received:2007-08-10 Revised:2007-11-07 Online:2008-04-28 Published:2008-04-28
  • Contact: YANG Wu-li

采用自组装方法制备了一种磁核/介孔二氧化硅壳的微球, 调节体系中C18TMS的加入量可控制介孔硅球的比表面积; 并通过化学修饰的方法对介孔微球表面进行巯基功能化修饰. 利用巯基与量子点之间的相互作用可将一定尺寸的量子点吸附于介孔二氧化硅球的孔中, 令介孔微球具有荧光效应; 同时可以利用吸附不同粒径的量子点的荧光光谱对介孔二氧化硅微球孔径的大小进行近似考察.

关键词: 介孔二氧化硅微球, 化学修饰, 量子点

A novel kind of magnetic core/mesoporous silica shell microsphere was prepared based on the self-assembly method, while the surface area of the mesoporous silica microspheres could be tailored by the amount of C18TMS. Thiol groups were introduced to the pore surface of the mesoporous silica based on a chemical modification. Via the interaction between the thiol groups and quantum dots (QDs), QDs were adsorbed into the pore channels of the mesoporous silica shell, and luminescent mesoporous silica microspheres were obtained. The pore sizes of the mesoporous silica could be estimated through the fluorescent spectra of the mesoporous silica microspheres embedded with QDs.

Key words: mesoporous silica microsphere, chemical modification, quantum dot