1. Department of Chemistry, Division
of Molecular Imaging and Photonics, Laboratory of Photochemistry and
Spectroscopy, KU Leuven - University of Leuven, Celestijnenlaan 200 F B2404, B-3001 Leuven, Belgium
2. Division of Frontier Materials
Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan