1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China
2. Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 P. R. China
3. School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Brisbane QLD 4001 Australia
4. Department of Materials Science Fudan University Shanghai 200433 P. R. China
5. Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering Jiangnan University Wuxi 214122 P. R. China
6. Key Laboratory of Materials Processing and Mold (Zhengzhou University) Ministry of Education Zhengzhou 450002 P. R. China