1. Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
2. Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
3. Université de Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
4. Institute of Nanotechnology, Karlsruhe Institute of Technology KIT, P.O. Box 3640, 76021 Karlsruhe, Germany
5. Department of Chemistry, University of Basel, St. Johannsring 19, 4056 Basel, Switzerland
6. Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha, Onna-son, Kunigami, Okinawa 904-0495, Japan
7. Institute of Physical Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany