Stable aqueous ZnO@polymer core-shell nanoparticles with tunable photoluminescence and their application in cell Imaging

被引:349
作者
Xiong, Huan-Ming [1 ,2 ]
Xu, Yang [1 ,2 ]
Ren, Qing-Guang [3 ]
Xia, Yong-Yao [1 ,2 ]
机构
[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
[2] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China
[3] Fudan Univ, Ctr Anal & Measurement, Shanghai 200433, Peoples R China
关键词
D O I
10.1021/ja800999u
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Stable aqueous solutions of ZnO@polymer core-shell nanoparticles with tunable photoluminescence are prepared through a simple sol-gel route. The copolymer shell has many hydrophilic external groups and a hydrophobic internal layer which connects ZnO cores through covalent bonds. The optimal samples show quantum yield above 50% and stable emission for months. These samples with their concentrations of below 0.2 mg/mL are nontoxic to human cells. After uptake of these ZnO@polymer nanoparticles, the luminescent cells have enough life under UV light for microscopic imaging.
引用
收藏
页码:7522 / +
页数:3
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