| Download | - View final version: Iodide functionalized paper-based SERS sensors for improved detection of narcotics (PDF, 3.0 MiB)
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| DOI | Resolve DOI: https://doi.org/10.3389/fchem.2021.680556 |
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| Author | Search for: Tay, Li-Lin1; Search for: Poirier, Shawn1; Search for: Ghaemi, Ali1; Search for: Hulse, John1; Search for: Wang, Shiliang |
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| Affiliation | - National Research Council of Canada. Metrology Research Centre
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| Format | Text, Article |
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| Physical description | 11 p. |
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| Subject | SERS; opioids; fentanyl; heroin; narcotics; iodide functionalization; senso |
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| Abstract | An inkjet-printed paper-based Surface-enhanced Raman scattering (SERS) sensor is a robust and versatile device that provides trace sensing capabilities for the detection and analysis of narcotics and drugs. Such sensors generally work well for analytes with good binding affinity towards the Au or Ag plasmonic nanoparticles (NPs) resident in the sensors. In this report, we show that iodide functionalization of the printed sensors helps to remove adsorbed contaminants from AuNP surfaces enabling superior performance with improved detection of narcotics such as fentanyl, heroin and cocaine by SERS. SERS signals are easily doubled with the iodide-functionalized sensors which also showed orders of magnitude improvement in detection limit. In this report, we show that a short (90 s) iodide treatment of the sensors significantly improved the detection of heroin. We propose that iodide functionalization be integrated into field detection kits through the solvent that wets paper-based sensor prior to swabbing for narcotics. Alternatively, we have also demonstrated that iodide functionalized sensors can be stored in ambient for up to 1 week and retain the improved performance towards heroin detection. This report will help to significantly improve the performance of paper-based sensors for field detection of narcotic drugs. |
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| Publication date | 2021-09-08 |
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| Publisher | Frontiers Media |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 544e3898-46b5-4d1a-8761-69cbb84a0283 |
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| Record created | 2022-10-24 |
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| Record modified | 2022-10-24 |
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