1. Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education
2. Department of Chemistry
3. Tsinghua University
4. Beijing 100084
5. P. R. China
6. Surfaces and Particle Engineering Laboratory (SPEL)
7. Department of Chemical Engineering
8. Imperial College London
9. London SW7 2AZ
10. UK
11. Laboratory of Physical Biology
12. Shanghai Institute of Applied Physics
13. Chinese Academy of Sciences
14. Shanghai 201800
15. China