[1] Univ Marburg, Fachbereich Phys, D-3550 Marburg, Germany
[2] Univ Marburg, Wissensch Zentrum Mat Wissensch, D-3550 Marburg, Germany
[3] Univ Marburg, Fachbereich Chem, D-3550 Marburg, Germany
[4] Univ Milan, Dipartimento Sci Mol Applicate Biosistemi, Milan, Italy
[5] CNR Ist Nanosci, Modena, Italy
[6] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy
[7] Univ Pavia, INSTM, I-27100 Pavia, Italy
[8] Univ Cagliari, Dipartimento Sci Chim, Monserrato, Italy
[9] Univ Cagliari, INSTM, Monserrato, Italy
[10] Helmholtz Zentrum Munchen, German Res Ctr Environm Hlth, Inst Lung Biol & Dis, Comprehens Pneumol Ctr, Neuherberg, Germany
[11] Tech Univ Munich, Inst Hydrochem, Munich, Germany