1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, University of Chinese Academy of Sciences, Changchun 130022, People's Republic of China
2. Organic Photonics and Electronics Group, Department of Physics, Umeå University, Umeå SE-90187, Sweden
3. State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, People's Republic of China
4. Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia