We report that the inclusion of non-aromatic 5,5-dimethylcyclopentadiene monomer into a conjugated backbone is an attractive strategy to high performance semiconducting polymers. The use of this monomer enables a room temperature Suzuki copolymerization with a diketopyrrolopyrrole comono-mer to afford a highly soluble, high molecular weight material. The resulting low band gap polymer exhibits excellent photo and thermal stability, and despite a large π-π stacking distance of 4.26 Å, it demonstrates excellent performance in thin-film transistor devices.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank Rutgers University, the British Council (173601536) and the Australian Research Council (DP130101861) for the financial support. This work was performed in part on the SAXS/WAXS beamline at the Australian Synchrotron, Victoria, Australia.