1. Center for Supramolecular Optoelectronic
Materials, WCU Hybrid Materials Program, Department of Materials Science
and Engineering, Seoul National University, Seoul 151-744, Korea
2. Center for Theragnosis, Korea Institute of Science and Technology, 39-1 Hawolgok-dong,
Seongbuk-gu, Seoul 136-791, Korea
3. Carbon Nanomaterials Design Laboratory,
Global Research Laboratory, Research Institute of Advanced Materials,
and Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea