1. School of Materials Science and Engineering
2. Nanyang Technological University
3. Singapore
4. School of Electrical and Electronic Engineering
5. Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
6. Shanghai Institute of Organic Chemistry
7. Chinese Academy of Sciences
8. Shanghai 200032
9. P. R. China
10. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences
11. Singapore 637371
12. Department of Materials Science and Engineering
13. City University of Hong Kong
14. Kowloon
15. China