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    Molecular-level electrochemical doping for fine discrimination of volatile organic compounds in organic chemiresistors

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    Name:
    MM_TA-COM-06-2020-005530_Proof_hi.pdf
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    2.238Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2021-07-27
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    Type
    Article
    Authors
    Kwon, Sooncheol cc
    Pak, Yusin
    Kim, Bongseong
    Park, Byoungwook cc
    Kim, Jehan
    Kim, Geunjin
    Jo, Yong Ryun
    Limbu, Saurav
    Stewart, Katherine
    Kim, Hyeonghun
    Kim, Bong Joong cc
    Jang, Soo Young
    Kang, Hongkyu
    Min, Jung Wook
    Kim, Ji Seon cc
    Jung, Gun Young cc
    Lee, Kwanghee cc
    KAUST Department
    Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST) Thuwal Kingdom of Saudi Arabia
    Date
    2020
    Embargo End Date
    2021-07-27
    Submitted Date
    2020-06-02
    Permanent link to this record
    http://hdl.handle.net/10754/665072
    
    Metadata
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    Abstract
    Printable organic sensors fabricated from solution-processed π-conjugated polymers (π-CPs) are promising candidates to detect volatile organic compounds (VOCs) due to the intriguing physical, chemical and electronic properties of π-CPs. These devices, often termed organic chemiresistors, require good sensing capabilities to transduce stimuli from specific VOCs at low concentrations into analytical electric signals. However, discriminating such VOCs using organic chemiresistors has proven very challenging. Herein, we report that the molecular-level electrochemical doping of π-CPs with solid-state ionic liquids (SILs) significantly improves their electrical conductivity (∼10-1 S cm-1) and selective VOC interactions, which can be manipulated through different π-CPs:SIL blend ratios. These characteristics enable the fine discrimination of VOCs at concentrations in the parts-per-billion (ppb) range under low power consumption (
    Citation
    Kwon, S., Pak, Y., Kim, B., Park, B., Kim, J., Kim, G., … Lee, K. (2020). Molecular-level electrochemical doping for fine discrimination of volatile organic compounds in organic chemiresistors. Journal of Materials Chemistry A, 8(33), 16884–16891. doi:10.1039/d0ta05530a
    Sponsors
    S. K. and Y. P. contributed equally to this work. This research was supported by the Global Research Laboratory Program of the National Research Foundation (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2017K1A1A2013153); the Young Researchers Program of the NRF funded by the Ministry of Science, ICT & Future Planning (NRF-2018R1C1B6006177); and GIST Research Institute (GRI), RISE grant funded by the GIST in 2020. G. Y. Jung was supported by the Pioneer Research Center Program (NRF-2016M3C1A3908893) of the National Research Foundation of Korea (NRF), which is funded by the Ministry of Science and ICT & Future Planning. We thank the Heeger Center for Advanced Materials (HCAM) and the GIST-ICL International Collaboration R&D Center at Gwangju Institute of Science and Technology (GIST) of Korea for assistance with device fabrication and characterization. We acknowledge the UK EPSRC for studentships under the Centre for Doctoral Training (CDT) in Plastic Electronics (EP/G037515/1).
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Journal of Materials Chemistry A
    DOI
    10.1039/d0ta05530a
    Additional Links
    http://xlink.rsc.org/?DOI=D0TA05530A
    ae974a485f413a2113503eed53cd6c53
    10.1039/d0ta05530a
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