1. Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry; Johannes Kepler University Linz; 4040 Linz Austria
2. Petrochemistry and Polymer Science Program, Faculty of Science; Chulalongkorn University; Bangkok 10330 Thailand
3. Department of Chemistry, Faculty of Science; Chulalongkorn University; Bangkok 10330 Thailand
4. Research group on Materials for Clean Energy Production STAR, Department of Chemistry, Faculty of Science; Chulalongkorn University; Bangkok 10330 Thailand
5. Institute of Physical Chemistry; University of Innsbruck; 6020 Innsbruck Austria