1. School of Materials Science and Engineering
2. Changchun University of Science and Technology
3. Changchun 130022
4. P. R. China
5. State Key Laboratory on Integrated Optoelectronics
6. College of Electronic Science and Engineering
7. Jilin University
8. Changchun 130012
9. Bergische Universität Wuppertal
10. Macromolecular Chemistry Group (buwmakro)
11. Institute for Polymer Technology
12. D-42097 Wuppertal
13. Germany