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Alternating 5,5-Dimethylcyclopentadiene and Diketopyrrolopyrrole Copolymer Prepared at Room Temperature for High Performance Organic Thin-Film Transistors
- Fei, Zhuping, Chen, Lei, Han, Yang, Gann, Eliot, Chesman, Anthony S. R., McNeill, Christopher R., Anthopoulos, Thomas D., Heeney, Martin, Pietrangelo, Agostino
- Journal of the American Chemical Society 2017 v.139 no.24 pp. 8094-8097
- ambient temperature, composite polymers, copolymerization, molecular weight, thermal stability, 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.