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- Title
Thieno[3,2- b]thiophene-Diketopyrrolopyrrole-Based Quinoidal Small Molecules: Synthesis, Characterization, Redox Behavior, and n-Channel Organic Field-Effect Transistors.
- Authors
Wang, Chao; Zang, Yaping; Qin, Yunke; Zhang, Qian; Sun, Yuanhui; Di, Chong ‐ an; Xu, Wei; Zhu, Daoben
- Abstract
We report the synthesis, characterization, redox behavior, and n-channel organic field-effect (OFET) characteristics of a new class of thieno[3,2-b]thiophene-diketopyrrolopyrrole-based quinoidal small molecules 3 and 4. Under ambient atmosphere, solution-processed thin-film transistors based on 3 and 4 exhibit maximum electron mobilities up to 0.22 and 0.16 cm2 V−1 s−1, respectively, with on-off current ratios ( Ion/ Ioff) of more than than 106. Cyclic voltammetry analysis showed that this class of quinoidal derivatives exhibited excellent reversible two-stage reduction behavior. This property was further investigated by a stepwise reductive titration of 4, in which sequential reduction to the radical anion and then the dianion were observed.
- Subjects
CHEMICAL synthesis; OXIDATION-reduction reaction; ORGANIC field-effect transistors; THIOPHENES; SMALL molecules
- Publication
Chemistry - A European Journal, 2014, Vol 20, Issue 42, p13755
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201403037