Institution: | aDepartment of Chemistry-BK21, Institute of Basic Sciences, Sungkyunkwan Advanced Institute of NanoTechnology, Sungkyunkwan University, Suwon 440-746, Republic of Korea bJeonju Center, Korea Basic Science Institute, Jeonju 561-756, Republic of Korea cDepartment of Advanced Nanomaterials Engineering, Jeonju University, 1200 Hyoja-Dong-3Ga, Wansan-Gu, Jeonju 560-759, Republic of Korea |