1. School of Materials Science and Engineering
2. Tianjin University
3. Tianjin 300072
4. P. R. China
5. Tianjin Key Laboratory of Molecular Optoelectronic Science
6. The Key Laboratory of Functional Polymer Materials
7. State Key Laboratory and Institute of Elemento-Organic Chemistry
8. Centre of Nanoscale Science and Technology
9. College of Chemistry
10. Nankai University
11. Frontier Institute of Science and Technology, and School of Science
12. Xi'an Jiaotong University
13. Xi'an 710049
14. China
15. Department of Physics
16. Organic and Carbon Electronics Lab (ORaCEL)
17. North Carolina State University
18. Raleigh NC 27695
19. USA