121st General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation for Young Polymer Scientists
Room No. Room 301
Time THU 10:30-:
Code POLY.O-7
Subject Donor-Acceptor Copolymer Series for Photonics and Electronics
Authors Věra Cimrová*, Veronika Pokorná, Petra Babičová, Drahomír Výprachtický
Institute of Macromolecular Chemistry, The Czech Academy of Sciences, Czech Republic
Abstract Semiconducting conjugated polymers are extensively studied due to their potential applications in photonics and electronics. Low-bandgap donor-acceptor copolymers belonging to the third generation of semiconducting polymers are particularly of interest for photovoltaic applications. Recently, series of donor-acceptor (D-A) copolymers with the backbones consisting of various combinations of electron donor and electron acceptor units and also various side chain combinations were synthesised and studied. The D-A copolymers of the first series consisted of electron-acceptor units 4,6-di(thiophen-2′-yl)thieno[3,4-c][1,2,5]thiadiazole (T) or its derivatives and various electron-donor units (9,9-bis(alkyl)fluorene, 2,5-didodecyl-1,4-phenylene or 2,5-didodecyloxy-1,4-phenylene, bithiophene or carbazole derivatives). The D-A copolymers of the second series are composed of electron-acceptor N,N'-dialkylperylene-3,4:9,10-tetracarboxydiimide and three different electron-donor units (9,9-dioctylfluorene or 9-alkylcarbazole). Complex studies of their properties (photophysical, thermochromic, electro- and spectroelectrochemical, charge transport) and testing in photovoltaic devices with bulk heterojunctions were performed. The results will be reported and discussed in relations to the copolymer backbone structure, side chain nature and length, and molecular weight as well. We thank the Czech Science Foundation for supporting this work with grant 18-14683J.
E-mail cimrova@imc.cas.cz