1. SensorLab,
Department of Chemistry, University of Western Cape, Robert Sobukwe
Road, Private Bag X17, Bellville, 7535, Cape Town, South Africa
2. Linz
Institute for Organic Solar Cells, Johannes Kepler University, Altenbergerstrasse
69, 4040 Linz, Austria
3. Institute
of Macromolecular Chemistry, The Czech Academy of Sciences, Heyrovský
Sq. 2, 162 06 Prague
6, Czech Republic
4. Institute
of Polymeric Materials and Testing, Johannes Kepler University, Altenbergerstrasse
69, 4040 Linz, Austria
5. Department
of Chemistry, Faculty of Science and Engineering, Université Laval, Pavillon Alexandre-Vachon, local 1250B Québec, Québec G1 V 0A6, Canada