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

Kwon Sooncheol; Pak Yusin; Kim Bongseong; Park Byoungwook; Kim Jehan; Kim Geunjin; Jo Yong-Ryun; Limbu Saurav; Stewart Katherine; Kim Hyeonghun; Kim Bong-Joong; Jang Soo-Young; Kang Hongkyu; Min Jung-Wook; Kim Ji-Seon; Jung Gun Young; Lee Kwanghee

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

机译：用于有机化学器中挥发性有机化合物的微量辨别的分子水平电化学掺杂

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Printable organic sensors fabricated from solution-processed pi-conjugated polymers (pi-CPs) are promising candidates to detect volatile organic compounds (VOCs) due to the intriguing physical, chemical and electronic properties of pi-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 pi-CPs with solid-state ionic liquids (SILs) significantly improves their electrical conductivity (similar to 10(-1)S cm(-1)) and selective VOC interactions, which can be manipulated through different pi-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 (<0.1 mu W) and room temperature conditions. Our result provides a new opportunity for developing highly sensitive and selective VOC monitoring platform technologies that are printable on large-area, wearable, flexible and transparent substrates.

机译：由溶液加工的PI-缀合的聚合物（PI-CPS）制造的可印刷有机传感器是由于PI-CPS的有趣物理，化学和电子性质而导致挥发性有机化合物（VOC）的候选物。这些器件通常被称为有机化学电机，需要良好的感测能力，以将刺激从特定VOC的刺激转变为分析电信号。然而，使用有机切片的鉴定这些VOC已经证明非常具有挑战性。在此，我们报道了具有固态离子液体（SIL）的PI-CP的分子水平电化学掺杂显着提高了它们的导电性（类似于10（-1）CM（-1））和选择性VOC相互作用可以通过不同的PI-CPS：SIL混合比操纵。这些特性使得在低功耗（<0.1μW）和室温条件下，这些特性能够在零件中浓度的浓度进行精细辨别浓度（PPB）范围。我们的结果为开发高度敏感和选择性VOC监测平台技术提供了新的机会，可打印在大面积，可穿戴，灵活且透明的基板上。

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《Journal of Materials Chemistry, A. Materials for energy and sustainability》 |2020年第33期|共8页
作者
Kwon Sooncheol; Pak Yusin; Kim Bongseong; Park Byoungwook; Kim Jehan; Kim Geunjin; Jo Yong-Ryun; Limbu Saurav; Stewart Katherine; Kim Hyeonghun; Kim Bong-Joong; Jang Soo-Young; Kang Hongkyu; Min Jung-Wook; Kim Ji-Seon; Jung Gun Young; Lee Kwanghee;
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作者单位

Gwangju Inst Sci &

Technol GIST Res Inst Solar &

Sustainable Energies RISE Gwangju 500712 South Korea;

Korea Inst Sci &

Technol KIST Sensor Syst Res Ctr SSRG Seoul 02792 South Korea;

Gwangju Inst Sci &

Technol GIST Heeger Ctr Adv Mat HCAM Gwangju 500712 South Korea;

Gwangju Inst Sci &

Technol GIST Sch Mat Sci &

Engn SMSE Gwangju 500712 South Korea;

Pohang Univ Sci &

Technol Pohang Accelerator Lab Pohang 37673 South Korea;

Gwangju Inst Sci &

Technol GIST Heeger Ctr Adv Mat HCAM Gwangju 500712 South Korea;

Gwangju Inst Sci &

Technol GIST Sch Mat Sci &

Engn SMSE Gwangju 500712 South Korea;

Imperial Coll London Ctr Plast Elect Dept Phys London SW7 2AZ England;

Imperial Coll London Ctr Plast Elect Dept Phys London SW7 2AZ England;

Gwangju Inst Sci &

Technol GIST Sch Mat Sci &

Engn SMSE Gwangju 500712 South Korea;

Gwangju Inst Sci &

Technol GIST Sch Mat Sci &

Engn SMSE Gwangju 500712 South Korea;

Gwangju Inst Sci &

Technol GIST Res Inst Solar &

Sustainable Energies RISE Gwangju 500712 South Korea;

Gwangju Inst Sci &

Technol GIST Res Inst Solar &

Sustainable Energies RISE Gwangju 500712 South Korea;

King Abdullah Univ Sci &

Technol KAUST Phys Sci &

Engn Div Thuwal Saudi Arabia;

Imperial Coll London Ctr Plast Elect Dept Phys London SW7 2AZ England;

Gwangju Inst Sci &

Technol GIST Sch Mat Sci &

Engn SMSE Gwangju 500712 South Korea;

Gwangju Inst Sci &

Technol GIST Res Inst Solar &

Sustainable Energies RISE Gwangju 500712 South Korea;

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1. Molecular-level electrochemical doping for fine discrimination of volatile organic compounds in organic chemiresistors [J] . Kwon Sooncheol, Pak Yusin, Kim Bongseong, Journal of Materials Chemistry, A. Materials for energy and sustainability . 2020,第33期

机译：用于有机化学器中挥发性有机化合物的微量辨别的分子水平电化学掺杂
2. Au-doped zinc oxide nanostructure sensors for detection and discrimination of volatile organic compounds [J] . C. Wongchoosuk, S. Choopun, A. Tuantranont, Materials Research Innovations . 2009,第3期

机译：掺杂金的氧化锌纳米结构传感器，用于检测和鉴别挥发性有机化合物
3. Single‐walled Carbon Nanotube‐Calixarene Based Chemiresistor for Volatile Organic Compounds [J] . Sarkar Tapan, Srinives Sira, Rodriquez Armando, Electroanalysis . 2018,第9期

机译：用于挥发性有机化合物的单壁碳纳米管 - 钙喹铵化学体
4. Conductive-carbon-black filled PDMS chemiresistor sensor for the detection of volatile organic compounds [C] . Wang Jian, Feng Bo, Wu Wengang Proceedings of the 2011 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems . 2011

机译：导电炭黑填充PDMS化学电阻传感器，用于检测挥发性有机化合物
5. Practicum Three (June 2000). Performance study of electrochemical capacitors based on poly(3 -phenylthiophene) derivatives. Practicum Two (September 1998). Photocatalytic destruction of volatile organic compounds (VOC) for air purification. Practicum One (August 1997). Poly(3 -alkylthiophene) membranes for gas separations: Fabrication, gas transport studies and characterization [D] . Li, Lin 2000

机译：实习三（2000年6月）。基于聚（3-苯基噻吩）衍生物的电化学电容器的性能研究。实习二（1998年9月）。光催化破坏挥发性有机化合物（VOC）以净化空气。实习一（1997年8月）。用于气体分离的聚（3-烷基噻吩）膜：制备，气体传输研究和表征
6. Poly(3-Methylthiophene) Thin Films Deposited Electrochemically on QCMs for the Sensing of Volatile Organic Compounds [O] . Sadullah Öztürk, Arif Kösemen, Zafer Şen, 2016

机译：电化学沉积在QCM上的聚（3-甲基噻吩）薄膜用于感测挥发性有机化合物
7. In-Situ Chemiresistor Sensor Package for Real-Time Detection of Volatile Organic Compounds in Soil and Groundwater [O] . Clifford K. Ho, Robert C. Hughes 2014

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

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