A Highly Sensitive Diketopyrrolopyrrole-Based Ambipolar Transistor for Selective Detection and Discrimination of Xylene Isomers

Bin Wang, Tan Phat Huynh, Weiwei Wu, Naseem Hayek, Thu Trang Do, John C. Cancilla, Jose S. Torrecilla, Masrur Morshed Nahid, John M. Colwell, Oz M. Gazit, Sreenivasa Reddy Puniredd, Christopher R. McNeill, Prashant Sonar, Hossam Haick

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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 languageEnglish
Pages (from-to)4012-4018
Number of pages7
JournalAdvanced Materials
Volume28
Issue number21
DOIs
Publication statusPublished - 1 Jun 2016

Keywords

  • ambipolar
  • diketopyrrolopyrrole
  • isomers
  • sensors
  • xylene

Cite this

Wang, B., Huynh, T. P., Wu, W., Hayek, N., Do, T. T., Cancilla, J. C., Torrecilla, J. S., Nahid, M. M., Colwell, J. M., Gazit, O. M., Puniredd, S. R., McNeill, C. R., Sonar, P., & Haick, H. (2016). A Highly Sensitive Diketopyrrolopyrrole-Based Ambipolar Transistor for Selective Detection and Discrimination of Xylene Isomers. Advanced Materials, 28(21), 4012-4018. https://doi.org/10.1002/adma.201505641