Probe Sensor Using Nanostructured Multi-Walled Carbon Nanotube Yarn for Selective and Sensitive Detection of Dopamine

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Probe Sensor Using Nanostructured Multi-Walled Carbon Nanotube Yarn for Selective and Sensitive Detection of Dopamine

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Title: Probe Sensor Using Nanostructured Multi-Walled Carbon Nanotube Yarn for Selective and Sensitive Detection of Dopamine
Author(s):
Al-Graiti, Wed;
Yue, Zhilian;
Foroughi, Javad;
Huang, Xu-Feng;
Wallace, Gordon;
Baughman, Ray H.;
Chen, Jun
Date Created: 2017-04-18
Item Type: article
Keywords: Probes (Electronic instruments)
Carbon nanotubes
Dopamine
Abstract: The demands for electrochemical sensor materials with high strength and durability in physiological conditions continue to grow and novel approaches are being enabled by the advent of new electromaterials and novel fabrication technologies. Herein, we demonstrate a probe-style electrochemical sensor using highly flexible and conductive multi-walled carbon nanotubes (MWNT) yarns. The MWNT yarn-based sensors can be fabricated onto micro Pt-wire with a controlled diameter varying from 100 to 300 mu m, and then further modified with Nafion via a dip-coating approach. The fabricated micro-sized sensors were characterized by electron microscopy, Raman, FTIR, electrical, and electrochemical measurements. For the first time, the MWNT/Nafion yarn-based probe sensors have been assembled and assessed for high-performance dopamine sensing, showing a significant improvement in both sensitivity and selectivity in dopamine detection in presence of ascorbic acid and uric acid. It offers the potential to be further developed as implantable probe sensors.
Publisher: MDPI AG
ISSN: 1424-8220
Source: Sensors
Link to Related Resource: http://dx.doi.org/10.3390/s17040884
Persistent Link: http://hdl.handle.net/10735.1/5806
Bibliographic Citation: Al-Graiti, Wed, Zhilian Yue, Javad Foroughi, Xu-Feng Huang, et al. 2017. "Probe Sensor Using Nanostructured Multi-Walled Carbon Nanotube Yarn for Selective and Sensitive Detection of Dopamine." Sensors 17(4), doi:10.3390/s17040884
Terms of Use: CC BY 4.0 (Attribution)
©2017 The Authors
Sponsors: Australian Institute for Innovative Materials (AIIM for Gold) and the ARC Center of Excellence Scheme (CE140100012); Australian Research Council under Discovery Early Career Researcher award (DE12010517).

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CC BY 4.0 (Attribution) Except where otherwise noted, this item's license is described as CC BY 4.0 (Attribution)