[Gong, Shu-Ling;Yang, Wei-Ping;Li, Yan;Chen, Yuan-Yin] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China.^[Li, Xiong] Huazhong Univ Sci & Technol, Natl Lab Optoelect, Wuhan 430074, Peoples R China.^[Meng, Xiang-Gao] Huazhong Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.