1. Department
of Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, 10044 Stockholm, Sweden
2. Photochemistry and Molecular Science, Department of Chemistry—Ångström
Laboratory, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden
3. State Key Lab of Fine Chemicals,
DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 116024 Dalian, China