[Xiong, Bin; He, Yan; Cao, Xuan] Hunan Univ, Coll Chem & Chem Engn, Coll Biol, State Key Lab Chemobiosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
[Pan, Qi; He, Yan; Feng, Jingjing] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.
[Cao, Xuan] Univ South China, Inst Pharm & Pharmacol, Hengyang 421001, Hunan, Peoples R China.
[Yeung, Edward S.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.