1. Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology
2. Institute of Solid State Physics
3. Chinese Academy of Sciences
4. Hefei 230031
5. China
6. Beijing Advanced Innovation Center for Soft Matter Science and Engineering
7. Beijing University of Chemical Technology
8. Beijing 100029
9. P. R. China
10. Department of Chemistry
11. University of Nebraska-Lincoln
12. Lincoln
13. USA
14. Department of Chemical & Biomolecular Engineering and Department of Mechanical & Materials Engineering