Zhanjun Li, Yuanwei Zhang, Xiang Wu, Ling Huang, Dongsheng Li, Wei Fan,Gang Han. Direct Aqueous-Phase Synthesis of Sub-10 nm “Luminous Pearls” with Enhanced in Vivo Renewable Near-Infrared Persistent Luminescence (Selected as ACS Editors' Choice Article and JACS Spotlight Article). Journal of the American Chemical Society Apr 29; 137(16):5304-7. 2015.