Qing Quan, Chen Fang, Li Peigang, Tang Weihua, Wu Zhongyun, Liu Zhongfan
Center for Nanoscale Science and Technology, College of Chemistry and Molecular Engineering, Peking University, Beijing, PR China.
Angew Chem Int Ed Engl. 2005 Dec 2;44(47):7771-5. doi: 10.1002/anie.200502680.