1. Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 6, Berlin 12489, Germany
2. Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, Mons B-7000, Belgium
3. CNR-ISOF, Istituto per la Sintesi Organica e la Fotoreattività, Via P. Gobetti, Bologna 101-40129, Italy
4. CNR-IMM, Istituto per la Microelettronica e Microsistemi, Viale del Fosso del Cavaliere, Roma 110-00133, Italy
5. Institut für Chemie and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, Berlin 12489, Germany
6. Center for Organic Photonics and Electronics and School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive N.W., Atlanta, Georgia 30332-0400, United States
7. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein Strasse 15, Berlin 12489, Germany
8. Institut für Physik, Institut für Chemie, and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 6, Berlin 12489, Germany