1. State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany, Department of Entomology, College of Agriculture and Biotechnology, China Agricultural University, 100094 Beijing, China, and National Center for Nanoscience and Technology, 100190 Beijing, China