1. CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11 First North Road, Zhongguancun, Beijing 100190, P. R. China.
2. DWI–Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52056 Aachen, Germany.
3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
4. Department of Chemistry, University of Florida, Gainesville, FL 32611, USA.
5. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
6. Shijiazhuang Zangnuo Bio Incorporated Corporation, No. 518 Cangsheng Road, Hi-tech District, Shijiazhuang, Hebei Province 050000, P. R. China.