1. Department of Chemistry; KTH Royal Institute of Technology; Stockholm 10044 Sweden
2. Department of Fibre and Polymer Technology; KTH Royal Institute of Technology; Stockholm 10044 Sweden
3. Department of Chemistry-Ångström Laboratory; Uppsala University; Uppsala 75121 Sweden
4. State Key Laboratory of Fine Chemicals; Institute of Artificial Photosynthesis, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology; Dalian 116024 P. R. China