1. Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Engesserstr. 20, Karlsruhe 76131, Germany
2. Umicore AG & Co. KG, Rodenbacher Chaussee 4, Hanau 63457, Germany
3. Department of Physics, Technical University of Denmark (DTU), Fysikvej 307, Kongens Lyngby 2800, Denmark
4. Synchrotron Soleil, L’Orme des Merisiers, BP48, Saint Aubin, Gif-sur Yvette CEDEX 91192, France