Single-Walled Carbon Nanotube Network Electrodes for the Detection of Fentanyl Citrate

Niklas Wester*, Elsi Mynttinen, Jarkko Etula, Tuomas Lilius, Eija Kalso, Bjørn F. Mikladal, Qiang Zhang, Hua Jiang, Sami Sainio, Dennis Nordlund, Esko I. Kauppinen, Tomi Laurila, Jari Koskinen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

We prepare disposable single-walled carbon nanotube network electrodes for the detection of the potent opioid fentanyl, currently a leading cause for opioid overdose deaths in the USA. We show repeatable dry transfer of single-walled carbon nanotube (SWCNT) networks to produce robust electrodes. This process directly produces highly conductive SWCNT electrodes without the need for any further modifications required for conventional carbon electrodes. The realized electrode showed low background currents combined with spontaneous enrichment of fentanyl, resulting in a high signal-to-noise ratio. With this electrode, a detection limit of 11 nM and a linear range of 0.01-1 μM were found for fentanyl. In addition, selectivity is demonstrated in the presence of several common interferents.

Original languageEnglish
Pages (from-to)1203-1212
Number of pages10
JournalACS Applied Nano Materials
Volume3
Issue number2
DOIs
Publication statusPublished - 28 Feb 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • DPV
  • electrochemical sensor
  • fentanyl citrate
  • SWCNT
  • voltammetry

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  • Projects

    FEPOD-TUTLI, T40218

    Laurila, T. & Mynttinen, E.

    01/06/201931/08/2021

    Project: Business Finland: New business from research ideas (TUTLI)

    Equipment

  • OtaNano

    Anna Rissanen (Manager)

    Aalto University

    Facility/equipment: Facility

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