1. Department of Physics, Ewha Womans University, Seoul 03760, South Korea
2. Institute of Optics, University of Rochester, Rochester, New York, United States
3. Sorbonne Université, Faculté des Sciences, CNRS, Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232, Chimie des Polymères, 4 Place Jussieu, 75005 Paris, France
4. Center for Quantum Nanoscience, Institute for Basic Science, Seoul 03760, Republic of Korea
5. CNRS-IPCMS, Université de Strasbourg, 23 Rue du Loess, Strasbourg, France
6. Aix Marseille Univ, CNRS, CINaM UMR 7325, Campus de Luminy, Case 913, 13288 Marseille, France
7. Kyushu University, Center for Organic Photonics and Electronics Research, Fukuoka, JP 819-0395, Japan
8. Building Blocks for Future Electronics Laboratory (2-B FUEL), The Joint CNRS-Ewha-Yonsei Laboratory, UMI 2002, Seoul, Republic of Korea