Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 9, Pages 4084-4087Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja3003183
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Funding
- National Natural Science Foundation of China [61101051, 20952001, 21021091]
- State Key Basic Research Program [2011CB808401]
- Chinese Academy of Sciences
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We report the synthesis, characterization, and application of a novel series of diketopyrrolopyrrole (DPP)-containing quinoidal small molecules as highly efficient n-type organic semiconductors in thin film transistors (TFTs). The first two representatives of these species exhibit maximum electron mobility up to 0.55 cm(2) V-1 s(-1) with current on/current off (I-on/I-off) values of 10(6) for 1 by vapor evaporation, and 0.35 cm(2) V-1 s(-1) with I-on/I-off values of 10(5)-10(6) for 2 by solution process in air, which is the first demonstration of DPP-based small molecules offering only electron transport characteristics in TFT devices. The results indicate that incorporation of a DPP moiety to construct quinoidal architecture is an effective approach to enhance the charge-transport capability.
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