Graphene derivative-based ink advances inkjet printing technology for fabrication of electrochemical sensors and biosensors

The field of biosensing would significantly benefit from a disruptive technology enabling flexible manufacturing of uniform electrodes. Inkjet printing holds promise for this, although realizing full electrode manufacturing with this technology remains challenging. We introduce a nitrogen-doped carb...

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Bibliographic Details
Published in:Biosensors & bioelectronics 2024-07, Vol.256, p.116277-116277, Article 116277
Main Authors: Nalepa, Martin-Alex, Panáček, David, Dědek, Ivan, Jakubec, Petr, Kupka, Vojtěch, Hrubý, Vítězslav, Petr, Martin, Otyepka, Michal
Format: Article
Language:English
Subjects:
Biosensor
Dopamine detection
Functionalized graphene ink
Inkjet printing
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Summary:The field of biosensing would significantly benefit from a disruptive technology enabling flexible manufacturing of uniform electrodes. Inkjet printing holds promise for this, although realizing full electrode manufacturing with this technology remains challenging. We introduce a nitrogen-doped carboxylated graphene ink (NGA-ink) compatible with commercially available printing technologies. The water-based and additive-free NGA-ink was utilized to produce fully inkjet-printed electrodes (IPEs), which demonstrated successful electrochemical detection of the important neurotransmitter dopamine. The cost-effectiveness of NGA-ink combined with a total cost per electrode of $0.10 renders it a practical solution for customized electrode manufacturing. Furthermore, the high carboxyl group content of NGA-ink (13 wt%) presents opportunities for biomolecule immobilization, paving the way for the development of advanced state-of-the-art biosensors. This study highlights the potential of NGA inkjet-printed electrodes in revolutionizing sensor technology, offering an affordable, scalable alternative to conventional electrochemical systems. [Display omitted]
ISSN:0956-5663
1873-4235
DOI:10.1016/j.bios.2024.116277