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Wenyan Yin, Dr. Lina Zhao, Liangjun Zhou , Dr. Zhanjun Gu, Xiaoxiao Liu, Gan Tian , Shan Jin , Liang Yan, Wenlu Ren, Prof. Gengmei Xing and Prof. Yuliang Zhao  Enhanced Red Emission from GdF3:Yb3+,Er3+ Upconversion Nanocrystals by Li+ Doping and Their Application for Bioimaging Chemistry - A European Journal 18

Version of Record online: 22 JUN 2012 | DOI: 10.1002/chem.201201053

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Dual-modality biolabels: GdF3:Yb,Er upconversion nanoparticles (UCNPs) can be tuned in emission color from yellow to increasingly red by doping with Li+ ions (see figure). The red emission of silica-coated GdF3:Yb,Er,Li UCNPs has great potential for in vivo and in vitro optical imaging, while the positive-contrast effect of their Gd3+ ions allows them to be used in magnetic resonance imaging.

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