Li-Juan Zhang1, Li Xia1, Hai-Yan Xie2, Zhi-Ling Zhang1, Dai-Wen Pang1,3. 1. Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, The Institute for Advanced Studies, and Wuhan Institute of Biotechnology , Wuhan University , Luojia Hill , Wuhan 430072 , P.R. China. 2. School of Life Science , Beijing Institute of Technology , Beijing 100081 , P.R. China. 3. College of Chemistry , Nankai University , 94 Weijin Road , Tianjin 300071 , P.R. China.