1. Department of Fiber System Engineering, Dankook University, Yongin 16890, Republic of Korea
2. Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology, Ulssan 44412, Republic of Korea
3. Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
4. Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore