1. Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
2. Department of Chemistry and Applied Biosciences ETH Zurich Vladimir-Prelog-Weg 3 Zurich CH-8093 Switzerland
3. Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China 230026 Hefei, Anhui P. R. China