1. Department
of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
2. Division
of Natural Resources and Eco-materials, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu,
Tokyo 183-8509, Japan
3. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan