1. State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 P. R. China
2. University of Chinese Academy of Sciences; Beijing 10039 P. R. China
3. Institute of Polymer Optoelectronic Materials and Devices; State Key Laboratory of Luminescent Materials and Devices; South China University of Technology; Guangzhou 510640 P. R. China
4. Department of Chemistry; College of Science; King Saud University; Riyadh 11451 Kingdom of Saudi Arabia
5. Moscow Institute of Physics and Technology; Dolgoprudny Moscow Region 141700 Russia
6. Department of Chemistry; College of Science & General Studies; Alfaisal University; Riyadh 11533 Kingdom of Saudi Arabia