3 years ago

Alternating 5,5-Dimethylcyclopentadiene and Diketopyrrolopyrrole Copolymer Prepared at Room Temperature for High Performance Organic Thin-Film Transistors

Alternating 5,5-Dimethylcyclopentadiene and Diketopyrrolopyrrole Copolymer Prepared at Room Temperature for High Performance Organic Thin-Film Transistors
Agostino Pietrangelo, Christopher R. McNeill, Martin Heeney, Eliot Gann, Lei Chen, Yang Han, Thomas D. Anthopoulos, Anthony S. R. Chesman, Zhuping Fei
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.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b03279

DOI: 10.1021/jacs.7b03279

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