1. POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, 20018 Donostia-San Sebastián, Spain
2. Centre
for Plastic Electronics and Department of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
3. Department
of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
4. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
5. Centre
for Plastic Electronics and Department of Chemistry, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
6. Materials
Department, University of California Santa Barbara, Santa Barbara, California 93106, United States
7. Mitsubishi
Centre for Advanced Materials, University of California Santa Barbara, Santa
Barbara, California 93106, United States
8. School of Materials Science and Engineering and School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332, United States