1. LIDYL, CEA, CNRS; Université Paris Saclay; 91191 Gif-sur-Yvette France
2. Institut für Physikalische und Theoretische Chemie; Goethe-Universität; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
3. Department of Chemistry; Northwestern University; Evanston Illinois 60208 USA
4. Istituto Biostrutture e Bioimmagini-Consiglio Nazionale delle Ricerche; Via mezzocannone 16 80136 Napoli Italy