1. Institute for Physical and Theoretical Chemistry, TU Braunschweig, Hans-Sommer-Str. 10, D-38106 Braunschweig, Germany, Nano-Bio Spectroscopy group and ETSF Scientific Development Centre, Dpto. Física de Materiales, Universidad del Paìs Vasco, Centro de Física de Materiales CSIC-UPV/EHU, DIPC, and CIC nanoGUNE, Av. Tolosa 72, E-20018 San Sebastián, Spain, Max-Volmer-Laboratory for Biophysical Chemistry, TU Berlin, Strasse des 17 Juni 135, D-10623 Berlin, Germany, and Institute of Physical Chemistry,...