Abstract
A study is conducted to report here a sensor based on an ambipolar diketopyrrolopyrrole (DPP) copolymer fi eld-effect transistor (FET) to selectively and sensitively detect xylene isomers at 40 ppm, which is below the NIOSH long-term exposure limit for xylene isomers. The rationale behind this approach is that an ambipolar FET that can operate alternatively in n-channel and p-channel modes has been adopted for the generation of double-sensing parameters in hole and electron changes, rather than using a unipolar FET. An alternating copolymer, poly(diketopyrrolopyrrole-terthiophene) is synthesized by Stille coupling, using hexyldecyl-substituted DPP fl anked with thiophene.
Original language | English |
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Pages (from-to) | 4012-4018 |
Number of pages | 7 |
Journal | Advanced Materials |
Volume | 28 |
Issue number | 21 |
DOIs | |
Publication status | Published - 1 Jun 2016 |
Keywords
- ambipolar
- diketopyrrolopyrrole
- isomers
- sensors
- xylene