1. Department
of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen,
The Netherlands
2. Netherlands Organization for Scientific Research, DUBBLE
beamline at the ESRF, 6 rue Jules Horowitz, BP 220, 38043, CEDEX 9,
Grenoble, France, and Dutch Polymer Institute
3. Molecular Materials, Department
of Applied Physics, Aalto University (formerly
Helsinki University of Technology), Puumiehenkuja 2, 02015 Espoo,
Finland