1. Lviv Polytechnic National University, Stepan Bandera 12, 79013 Lviv, Ukraine
2. Department of Polymer Chemistry and Technology, Kaunas University of Technology, K. Barsauskas str. 59, Kaunas 51423, Lithuania
3. Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
4. Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, 18031 Cherkasy, Ukraine