Nano Express

Nanoscale Research Letters

, Volume 5, Issue 3, pp 625-630

Open Access This content is freely available online to anyone, anywhere at any time.

Microwave Synthesis of Nearly Monodisperse Core/Multishell Quantum Dots with Cell Imaging Applications

  • Huaipeng SuAffiliated withState Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin UniversityOcean NanoTech LLCDepartment of Engineering Science and Mechanics, Penn State University
  • , Hengyi XuAffiliated withOcean NanoTech LLC
  • , Shuai GaoAffiliated withState Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University
  • , John David DixonAffiliated withOcean NanoTech LLC
  • , Zoraida P. AguilarAffiliated withOcean NanoTech LLC
  • , Andrew Y. WangAffiliated withOcean NanoTech LLC Email author 
  • , Jian XuAffiliated withDepartment of Engineering Science and Mechanics, Penn State University Email author 
  • , Jingkang WangAffiliated withState Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University Email author 

Abstract

We report in this article the microwave synthesis of relatively monodisperse, highly crystalline CdSe quantum dots (QDs) overcoated with Cd0.5Zn0.5S/ZnS multishells. The as-prepared QDs exhibited narrow photoluminescence bandwidth as the consequence of homogeneous size distribution and uniform crystallinity, which was confirmed by transmission electron microscopy. A high photoluminescence quantum yield up to 80% was measured for the core/multishell nanocrystals. Finally, the resulting CdSe/Cd0.5Zn0.5S/ZnS core/multishell QDs have been successfully applied to the labeling and imaging of breast cancer cells (SK-BR3).

Keywords

Microwave Semiconductor Quantum Dots Photoluminescence Cell labeling