1. Department of Chemical Engineering
2. Escola d'Enginyeria
3. Universitat Autònoma de Barcelona
4. 08193 Bellaterra
5. Spain
6. Catalan Institute of Nanoscience and Nanotechnology (ICN2)
7. CSIC and The Barcelona Institute of Science and Technology
8. Bellaterra
9. Institut de Biotecnologia i de Biomedicina and Departament de Bioquímica i de Biologia Molecular
10. Department of Chemistry