1. Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, I-70126 Bari, Italy
2. CNR-ICCOM Istituto di Chimica dei Composti Organometallici, Via Orabona 4, I-70126 Bari, Italy
3. Centre for Hybrid and Organic Solar Energy (CHOSE), Dipartimento di Ingegneria Elettronica, Università degli Studi di Roma “Tor Vergata”, via del Politecnico 1, 00133 Roma, Italy
4. Department of Materials and Centre of Plastic Electronics, Imperial College London, London SW7 2AZ, U.K.
5. School of Materials Science and Engineering and School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332, United States
6. Laboratoire de Chimie des Polymeres Organiques − LCPO, UMR5629 Université de Bordeaux, Allee Geoffroy Saint Hilaire, Batiment BB CS50023, 33615 Pessac Cedex, France