1. Key Laboratory of
Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, People’s Republic of China
2. Department
of Materials Science and Engineering, University of Pennsylvania, 216 LRSM Building, 3231 Walnut Street, Philadelphia, Pennsylvania 19104, United States
3. Department of Chemistry, Louisiana State University, Baton
Rouge, Louisiana 70803, United States