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Ion sensors based on novel fiber organic electrochemical transistors for lead ion detection

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Abstract

Fiber organic electrochemical transistors (FECTs) based on polypyrrole and nanofibers have been prepared for the first time. FECTs exhibited excellent electrical performances, on/off ratios up to 104 and low applied voltages below 2 V. The ion sensitivity behavior of the fiber organic electrochemical transistors was investigated. It exhibited that the transfer curve of FECTs shifted to lower gate voltage with increasing cations concentration, the sensitivity reached to 446 μA/dec in the 10–5–10–2 M Pb2+ concentration range. The ion selective properties of the FECTs have also been systematically studied for the detection of potassium, calcium, aluminum, and lead ions. The devices with different cations showed great difference in response curves. It was suitable for selectively monitoring Pb2+ with respect to other cations. The results indicated FECTs were very effective for electrochemical sensing of lead ion, which opened a promising perspective for wearable electronics in healthcare and biological application.

The schematic diagram of fiber organic electrochemical transistors based on polypyrrole and nanofibers for ion sensing.

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Acknowledgments

This work was financially supported by the National Nature Science Foundation (51473129, 51503157, 51503160, and 51273152), Program for New Century Excellent Talents in University (NCET-12-0711) and National Science and Technology support program (2015BAE01B00). All authors are also grateful for the financial support from the plan for Scientific and Technological Innovation Team of Excellent Young Investigator from the Education Department of Hubei Province of China under grant no.T201408 and Innovation Team from Science and Technology Department of Hubei Province of China under grant no.2015CFA028.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Wuhan Textile University, Wuhan, Hubei, 430200, China

    Yuedan Wang, Zhou Zhou, Xing Qing, Weibing Zhong, Qiongzhen Liu, Wenwen Wang, Mufang Li, Ke Liu & Dong Wang

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  1. Yuedan Wang
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  2. Zhou Zhou
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  3. Xing Qing
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  8. Ke Liu
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  9. Dong Wang
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Correspondence to Dong Wang.

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The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript.

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Wang, Y., Zhou, Z., Qing, X. et al. Ion sensors based on novel fiber organic electrochemical transistors for lead ion detection. Anal Bioanal Chem 408, 5779–5787 (2016). https://doi.org/10.1007/s00216-016-9684-8

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  • DOI: https://doi.org/10.1007/s00216-016-9684-8

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