1. Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan 609-735, Korea
2. Polymer Chemistry Lab., Kyungil University, Hayang 712-701, Korea
3. Department of Chemistry, Dong-A University, Busan 604-714, Korea
4. Department of Chemistry & Flexible Display Roll to Roll Research Center, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea