[1] Peking Univ, Minist Educ, Coll Chem, Key Labs Bioorgan Chem & Mol Engn, Beijing 100871, Peoples R China
[2] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Key Lab Specially Funct Mat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China
[3] S China Normal Univ, Inst Optoelect Mat & Technol, Guangzhou 510631, Guangdong, Peoples R China