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Research Article
Gabriel SOCOL
National Institute for Laser Plasma and Radiation Physics
Corresponding Author
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The paper reports for the first time an innovative polyaniline (PANI)/platinum (Pt)-coated fiber optic – surface plasmon resonance (FO-SPR) sensor used for highly-sensitive 4-nitrophenol (4-NP) pollutant detection. The Pt thin film was coated over an unclad core of an optical fiber (FO) using a DC magnetron sputtering technique, while the 4-NP responsive PANI layer was synthetized using a cost-effective electroless polymerization method. The presence of the electrolessly-grown PANI on the Pt-coated FO was observed by field-emission scanning electron microscopy (FE-SEM) and subsequently evidenced by energy dispersive X-ray analysis (EDX). These FO-SPR sensors with a demonstrated sensitivity of 1515 nm/RIU were then employed for 4-NP sensing, exhibiting am excellent limit of detection (LOD) in the low picomolar range (0.17 pM). The proposed sensor’s configuration has many other advantages, such as low-cost production, small size, immunity to electromagnetic interferences, remote sensing capability, and moreover, can be operated as a “stand-alone device”, making it thus well-suited for applications such as “on-site” screening of extremely low-level trace pollutants.
Keywords
Fiber optic – surface plasmon resonance (FO-SPR) sensors, Magnetron sputtering of platinum (Pt) thin films, Polyaniline (PANI) electroless synthesis, 4-nitrophenol highly-sensitive detection, Picomolar limit of detection (LOD).
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No competing interests reported.
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CURRENT STATUS: Under Review
Version 1
Posted 12 Feb, 2021
No community comments so far
Editorial decision: Major revision
On 03 Mar, 2021
Reviews received
Received 08 Feb, 2021
Reviewers agreed
On 05 Feb, 2021
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Invitations sent on 05 Feb, 2021
Editor assigned
On 30 Jan, 2021
Editor invited
On 30 Jan, 2021
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On 30 Jan, 2021
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On 29 Jan, 2021
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A new preprint design is coming!
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This preprint is under consideration at Scientific Reports. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Gabriel SOCOL
National Institute for Laser Plasma and Radiation Physics
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 12 Feb, 2021
No community comments so far
Editorial decision: Major revision
On 03 Mar, 2021
Reviews received
Received 08 Feb, 2021
Reviewers agreed
On 05 Feb, 2021
Reviewers invited
Invitations sent on 05 Feb, 2021
Editor assigned
On 30 Jan, 2021
Editor invited
On 30 Jan, 2021
Submission checks complete
On 30 Jan, 2021
First submitted
On 29 Jan, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
The paper reports for the first time an innovative polyaniline (PANI)/platinum (Pt)-coated fiber optic – surface plasmon resonance (FO-SPR) sensor used for highly-sensitive 4-nitrophenol (4-NP) pollutant detection. The Pt thin film was coated over an unclad core of an optical fiber (FO) using a DC magnetron sputtering technique, while the 4-NP responsive PANI layer was synthetized using a cost-effective electroless polymerization method. The presence of the electrolessly-grown PANI on the Pt-coated FO was observed by field-emission scanning electron microscopy (FE-SEM) and subsequently evidenced by energy dispersive X-ray analysis (EDX). These FO-SPR sensors with a demonstrated sensitivity of 1515 nm/RIU were then employed for 4-NP sensing, exhibiting am excellent limit of detection (LOD) in the low picomolar range (0.17 pM). The proposed sensor’s configuration has many other advantages, such as low-cost production, small size, immunity to electromagnetic interferences, remote sensing capability, and moreover, can be operated as a “stand-alone device”, making it thus well-suited for applications such as “on-site” screening of extremely low-level trace pollutants.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
No competing interests reported.
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