1. Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
2. Beijing Key Laboratory
of Ionic Liquids Clean Process, State Key Laboratory of Multiphase
Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
3. Department of Polymer Science & Engineering and Center for Photofunctional Energy Materials, Dankook University, Yongin, Gyeonggi 448-701, Korea