1. Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, Genova 16146, Italy
2. Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology,
P.O. Box 513, Eindhoven MB 5600, The Netherlands
3. European Synchrotron Radiation Facility (ESRF), Avenue des Martyrs 71, CS 40220, Grenoble Cedex 9 38000, France
4. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China