[1] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Phys & Chem Luminescence, Guangzhou 510640, Guangdong, Peoples R China
[2] Peking Univ, Key Lab Bioorgan Chem & Mol Engn, Minist Educ, Coll Chem, Beijing 100871, Peoples R China