1. Department of Chemistry, Catholic University of Korea, Bucheon, 420-743, Korea
2. LCD R&D Center, Samsung Electronics Co. Ltd., Youngin, 446-711, Korea
3. Department of Polymer Science and Engineering, Chungju National University, Chungju, 380-702, Korea
4. Polymer Chemistry Laboratory, College of Engineering, Kyungil University, Gyeongsan 712-701, Gyeongsangbuk-Do, Korea
5. Doosan R&D Center, Doosan Electronics Co. Ltd., Yongin 449-795, Korea