Aqueous synthesis of internally doped Cu:ZnSe/ZnS core-shell nanocrystals with good stability

作者：Xu, Shuhong; Wang, Chunlei; Wang, Zhuyuan; Zhang, Haisheng; Yang, Jing; Xu, Qinying; Shao, Haibao; Li, Rongqing; Lei, Wei; Cui, Yiping^*

来源：Nanotechnology, 2011, 22(27): 275605.

DOI：10.1088/0957-4484/22/27/275605

• CDTE NANOCRYSTALS
• ZNSE NANOCRYSTALS
• QUANTUM DOTS
• NANOPARTICLES
• THIOL
• PHOTOLUMINESCENCE
• ELECTROSTATICS
• GROWTH

To prepare biologically available Zn-based NCs in aqueous solution, we herein reported the synthesis of aqueous Cu:ZnSe/ZnS NCs with internally doped aqueous Cu: ZnSe NCs as the core template. Due to the dual protection of Cu impurities by the ZnSe core and ZnS shells, the as-prepared Cu: ZnSe/ZnS NCs show excellent stability in the open air, which overcomes the intrinsic instability of traditional aqueous Cu: ZnSe NCs. The as-prepared Cu: ZnSe/ZnS NCs possess extremely good stability, good biocompatibility and lower cytotoxicity, and thus can be used as a promising candidate for fluorescent NC-based biological applications.

• 出版日期2011-7-8
• 单位东南大学