1. Advanced Organic Materials, School of Textiles, Yeungnam University, Gyeongsan 712-749, Korea
2. Tex-Tech Co. Ltd., Pocheon 487-891, Korea
3. Department of Textile Engineering, Chunbuk National University, Jeonju 561-756, Korea
4. School of Display and Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Korea
5. College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Korea