1. Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Center of Soft Matter Science and Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
2. Department of Chemical Engineering Stanford University Stanford CA 94305 USA
3. Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China
4. School of Polymer Science and Engineering The University of Southern Mississippi Hattiesburg MS 39406 USA
5. Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Mianyang 621900 China