1. Center for Organic Photonics and Electronics Research (OPERA) and Department of Applied Chemistry Kyushu University 744 Motooka, Nishi Fukuoka 819‐0395 Japan
2. JST, ERATO Adachi Molecular Exciton Engineering Project c/o Center for Organic Photonics and Electronics Research (OPERA) Kyushu University 744 Motooka, Nishi Fukuoka 819‐0395 Japan
3. International Institute for Carbon Neutral Energy Research (WPI‐I2CNER) Kyushu University 744 Motooka, Nishi Fukuoka 819‐0395 Japan
4. Department of Chemistry School of Science and Technology Kwansei Gakuin University 2‐1 Gakuen Sanda Hyogo 669‐1337 Japan