1. Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
2. Toyota Physical and Chemical Research Institute, 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
3. Department of Chemistry, University of Warsaw, ul. Żwirki i Wigury 101, Warsaw 02-089, Poland
4. Department of Physics, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška 160, 2000 Maribor, Slovenia
5. Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
6. DIC Corporation, 4472-1 Komuro, Ina-machi, Saitama, Kitaadachi-gun 362-8577, Japan