Alternating 5,5-Dimethylcyclopentadiene and Diketopyrrolopyrrole Copolymer Prepared at Room Temperature for High Performance Organic Thin-Film Transistors
Z. Fei, L. Chen, Y. Han, E. Gann, A.S.R. Chesman, C.R. McNeill, T.D. Anthopoulos, M. Heeney, A. Pietrangelo
Journal of the American Chemical Society, 139(24), pp. 8094-8097, (2017)
Thin film, Organic, Transistors
We report that the inclusion of nonaromatic 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 comonomer 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.
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