Aqueous Manganese-Doped Core/Shell CdTe/ZnS Quantum Dots with Strong Fluorescence and High Relaxivity

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• 作者：Lihong Jing ; Ke Ding ; Sergii Kalytchuk ; Yu Wang ; Ruirui Qiao ; Stephen V. Kershaw ; Andrey L. Rogach ; Mingyuan Gao
• 刊名：Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：September 12, 2013
• 年：2013
• 卷：117
• 期：36
• 页码：18752-18761
• 全文大小：482K
• 年卷期：v.117,no.36(September 12, 2013)
• ISSN：1932-7455

文摘

Core/shell CdTe/ZnS colloidal quantum dots with varying dopant levels (4.7鈥?.7%) of paramagnetic manganese ions spatially distributed within the thin ZnS shell are synthesized by the aqueous approach. They exhibit both strong fluorescence originating from the CdTe core (up to 45% room temperature emission quantum yield) and high ionic relaxivity in the range of 10.7鈥?.4 mM^鈥? s^鈥?, which render them promising dual fluorescent/paramagnetic probes.