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Solution-processed wafer-scale nanoassembly of conducting polymers enables selective ultratrace nerve agent detection at low power

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Abstract

There is a great interest in developing microelectronic devices based on nanostructured conducting polymers that can selectively electro-couple analytes at high sensitivity and low power. Nanostructured conducting polymers have emerged as promising candidates for this technology due to their excellent stability with low redox potential, high conductivity, and selectivity endowed by chemical functionalization. However, it remains challenging to develop cost-effective and large-scale assembly approaches for functionalized conducting polymers in the practical fabrication of electronic devices. Here, we reported a straightforward wafer-scale assembly of nanostructured hexafluoroisopropanol functionalized poly(3,4-ethylenedioxythiophene) (PEDOT-HFIP) on smooth substrates. This approach is template-free, solution-processed, and adaptable to conductive and nonconductive substrates. By this approach, the nanostructured PEDOT-HFIPs could be easily integrated onto interdigitated electrodes with intimate ohmic contact. At the optimized space-to-volume ratio, we demonstrated a low-power, sensitive, and selective nerve agent sensing technology using this platform by detecting sarin vapor with a limit of detection (LOD) of 10 ppb and signal strength of 400 times the water interference at the same concentration, offering significant advantages over existing similar technologies. We envision that its easy scale-up, micro size, small power consumption, and combination of high sensitivity and selectivity make it attractive for various wearable platforms.

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Acknowledgements

We would like to thank Dr. Jing Zhang for English editing and Shanghai Synchrotron Radiation Facility for supplying the BL14B1 beamline. B. Z. acknowledges financial support from the National Natural Science Foundation of China (Nos. 21474014 and 22175111). Z. G. thanks financial support from the National Natural Science Foundation of China (No. 21704013) and China Postdoctoral Science Foundation (No. 2017M611416). R. B. W. thanks for financial support from the National Postdoctoral Program for Innovative Talents (No. BX201700044).

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  1. Bin Luo and Jianan Weng contributed equally to this work.

Authors and Affiliations

  1. School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China

    Bin Luo, Jianan Weng, Zhi Geng, Qichao Pan, Xilin Pei & Bo Zhu

  2. Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China

    Xilin Pei & Yong He

  3. Institute of NBC Defense, P.O. Box 1048, Beijing, 102205, China

    Chuanzhi Chen & Hongxing Zhang

  4. School of Chemical Engineering, Northwest University, Xi’an, 710069, China

    Renbo Wei

  5. 26th Institute of China Electronics Technology Group, Chongqing, 400060, China

    Yupeng Yuan, Jin Yang & Jinyi Ma

  6. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, China

    Zhengwei You

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  1. Bin Luo
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Corresponding authors

Correspondence to Zhi Geng, Yong He, Hongxing Zhang, Jinyi Ma or Bo Zhu.

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12274_2022_5148_MOESM1_ESM.pdf

Solution-processed wafer-scale nanoassembly of conducting polymers enables selective ultratrace nerve agent detection at low power

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Luo, B., Weng, J., Geng, Z. et al. Solution-processed wafer-scale nanoassembly of conducting polymers enables selective ultratrace nerve agent detection at low power. Nano Res. 16, 5653–5664 (2023). https://doi.org/10.1007/s12274-022-5148-y

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  • DOI: https://doi.org/10.1007/s12274-022-5148-y

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