1. Key Laboratory of Macromolecular Science of Shaanxi Province
2. School of Chemistry & Chemical Engineering
3. Shaanxi Normal University
4. Xi’an 710062
5. P. R. China
6. Department of Chemistry
7. Institute for Advanced Study
8. Institute of Molecular Functional Materials and Division of Biomedical Engineering
9. The Hong Kong University of Science & Technology (HKUST)
10. Clear Water Bay