1. Molecular Materials, Department of
Applied Physics, Aalto University (previously
Helsinki University of Technology), P.O. Box 15100, 00076 Aalto, Finland
2. Department of Chemistry, University of Athens, Panepistimiopolis, Zografou,
15771 Athens, Greece
3. Polymeric
and Organic Materials Department, Graduate School of Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan