1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
2. School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
3. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450000, China
4. Shenzhen Institute of Information Technology, Shenzhen 518172, China
5. School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
6. International Research Center of Spectroscopy and Quantum Chemistry (IRC SQC), Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia
7. Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
8. Laboratory of Organic Electronics, ITN, Linköping University, 601 74 Norrköping, Sweden