1. Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences No. 189 Songling Road Qingdao 266101 P. R. China
2. School of Chemistry and Chemical EngineeringShandong University Jinan 250100 P. R. China
3. School of Polymer Science and EngineeringQingdao University of Science and Technology Qingdao 266042 P. R. China
4. Beijing National Laboratory for Molecular Sciences (BNLMS)CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences Zhongguancun North First Street 2 Beijing 100190 P. R. China