1. State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
2. Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden
3. Department of Chemistry, Faculty of Science, University of Helsinki, FIN-00014 Helsinki, Finland
4. Institute of Molecular Plus, Department of Chemistry, Haihe Laboratory of Sustainable Chemical Transformations, Tianjin University, 92 Weijin Road, Tianjin 300072, China
5. Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden