1. Laboratory of Polymer Chemistry
2. Department of Materials
3. ETH Zurich
4. 8093 Zürich
5. Switzerland
6. Centre of Analysis and Synthesis
7. Lund University
8. SE-22100 Lund
9. Sweden
10. Chemistry Department
11. Faculty of Science
12. Assiut University
13. Assiut
14. Egypt
15. Departament de Física Aplicada
16. EEI
17. Universitat Politècnica de Catalunya
18. 08700 Igualada
19. Spain
20. Max-Planck-Institute for Polymer Research
21. 55128 Mainz
22. Germany