1. Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
2. Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
3. Japan Science and Technology Agency (JST), ERATO, Adachi Molecular Exciton Engineering Project, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
4. Aix Marseille University, CNRS, CINaM UMR 7325, Campus de Luminy, Case 913, Marseille, France
5. Building Blocks for Future Electronics Laboratory (2-B FUEL), The Joint CNRS-Ewha-Yonsei Laboratory, UMI 2002, Seoul, South Korea
6. Univ Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342 Lyon, France