1. Polymeric
Materials Department, Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis
Way, #08-03 Innovis, 138634 Singapore
2. Department
of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore
3. Shandong
Provincial Key Laboratory of Fine Chemicals, School of Chemistry of
Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, China