1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland, Department of Physical Chemistry, University of Uppsala, Box 532, SE-75121 Uppsala, Sweden, Department of Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel, Switzerland, Centre for Electronic Materials and Devices, Department of Chemistry, Imperial College, Exhibition Road, SW7 2AZ London, U.K., and Department...