1. a Max-Planck-Institut für Polymerforschung , Ackermannweg 10, D-55021 , Mainz , Germany
2. b S. Ito is now with the Department of Polymer Chemistry , Kyoto University , Sakyo, Kyoto , 606 , Japan
3. c F. Kremer and T. Fischer are now with FB Physik der Universität Leipzig , 04103 , Leipzig , Germany
4. d Institut für Physik, Johannes Gutenberg Universität , Staudingerweg 7, D-55021 , Mainz , Germany
5. e The Institute of Physical and Chemicai Research (RIKEN), Frontier Research Program , 2-1 Hirosawa, Wako, Saitama , 351-01 , Japan