Affiliation: | 1. Center for Supramolecular Optoelectronic Materials and WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul 151‐744, Korea;2. Department of Chemistry, The Catholic University of Korea, Bucheon‐si, Geyonggi‐do, 420‐753, Korea;3. Department of Physics, Korea University, Seoul, 136‐713, Korea |