1. Institute of Materials Science of Barcelona ICMAB‐CSIC Campus UAB Bellaterra CP 08193 Spain
2. POLYMAT and University of the Basque Country Av. de Tolosa 72 Donostia‐San Sebastián 20018 Spain
3. Institute for Physics and Astronomy University of Potsdam 14476 Potsdam‐Golm Germany
4. Grupo de Polímeros Centro de Investigacións Tecnolóxicas (CIT) Universidade da Coruña Esteiro Ferrol 15471 Spain
5. Ikerbasque Basque Foundation for Science Bilbao 48013 Spain
6. Centre for Advanced Materials Heidelberg University Im Neuenheimer Feld 225 69120 Heidelberg Germany
7. Division of Electronics and Photonic Materials Department of Physics Chemistry and Biology Linköping University Linköping 58183 Sweden