1. State Key Laboratory of Molecular Engineering of Polymers
2. Department of Macromolecular Science
3. Fudan University
4. Shanghai 200438
5. P. R. China
6. College of Chemistry
7. Chemical Engineering and Biotechnology
8. Donghua University
9. Shanghai 201620
10. China
11. Henan Key Laboratory of Photovoltaic Materials
12. Henan University
13. Kaifeng 475004