1. Catalan Institute of Nanoscience and Nanotechnology (ICN2)
2. CSIC and BIST
3. Bellaterra
4. Spain
5. Departament de Química
6. Organic Chemistry Section
7. Facultat de Química
8. Universitat de Barcelona
9. 08028 Barcelona
10. Van't Hoff Institute for Molecular Sciences
11. ICREA