期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 2, 期 38, 页码 8089-8097出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tc00651h
关键词
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资金
- Austrian Science Foundation
- FWF, within the Wittgenstein Prize of N. S. Sariciftci Solare Energie Umwandlung [Z222-N19]
- Translational Research Project Indigo: From ancient dye to modern high-performance organic electronic circuits [TRP 294-N19]
- Austrian Science Fund (FWF) [TRP 294] Funding Source: researchfish
Herein we report on the synthesis and properties of 6,6'-dithienylindigo (DTI), as well as its solubilized N, N'-di(tert-butoxy carbonyl) derivative (tBOC-DTI). tBOC-DTI can be electropolymerized and thermally interconverted into films of poly(DTI). Thin films of DTI afford quasi-reversible 2-electron reduction and oxidation electrochemistry, and demonstrate ambipolar charge transport in organic field-effect transistors with a hole mobility of up to 0.11 cm(2) V-1 s(-1) and an electron mobility of up to 0.08 cm(2) V-1 s(-1). Operation of the p-channel shows excellent air stability, with minimal degradation over a 60 day stressing study. Poly(DTI) can be reversibly oxidized and reduced over hundreds of cycles while remaining immobilized on the working electrode surface, and additionally shows a pronounced photoconductivity response in a diode device geometry. This work shows the potential of extended indigo derivatives for organic electronic applications, demonstrating impressive stability under ambient conditions.
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