1. Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion Department of Applied Chemistry Tianjin University of Technology No.391 Binshui Xidao, Xiqing District Tianjin 300384 P. R. China
2. Key Laboratory for Advanced Materials and Institute of Fine Chemicals Shanghai Key Laboratory of Functional Materials Chemistry Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Centre School of Chemistry and Molecular Engineering East China University of Science & Technology Shanghai 200237 P. R. China
3. Laboratory of Photomolecular Science Ecole Polytechnique Fédédale de Lausanne 1015 Lausanne Switzerland