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Designing Efficient Low-Cost Paper-Based Sensing Plasmonic Nanoplatforms

Sensors (Basel, Switzerland), 2018-09, Vol.18 (9), p.3035 [Peer Reviewed Journal]

2018. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2018 by the authors. 2018 ;ISSN: 1424-8220 ;EISSN: 1424-8220 ;DOI: 10.3390/s18093035 ;PMID: 30208609

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  • Title:
    Designing Efficient Low-Cost Paper-Based Sensing Plasmonic Nanoplatforms
  • Author: Susu, Laurentiu ; Campu, Andreea ; Craciun, Ana Maria ; Vulpoi, Adriana ; Astilean, Simion ; Focsan, Monica
  • Subjects: Biomedical materials ; Biosensors ; Catalytic oxidation ; Cellulose ; Cellulose fibers ; Design optimization ; Gold ; gold nanorods ; Interdisciplinary aspects ; Low cost ; LSPR ; Nanomaterials ; Nanoparticles ; nanosensor ; Nanostructured materials ; Nanotechnology devices ; Optical properties ; paper nanoplatform ; Platforms ; Raman spectra ; Resonance scattering ; Scanning electron microscopy ; Sensitivity ; Sensors ; SERS ; Submerging
  • Is Part Of: Sensors (Basel, Switzerland), 2018-09, Vol.18 (9), p.3035
  • Description: Paper-based platforms can be a promising choice as portable sensors due to their low-cost and facile fabrication, ease of use, high sensitivity, specificity and flexibility. By combining the qualities of these 3D platforms with the optical properties of gold nanoparticles, it is possible to create efficient nanodevices with desired biosensing functionalities. In this work, we propose a new plasmonic paper-based dual localized surface plasmon resonance⁻surface-enhanced Raman scattering (LSPR-SERS) nanoplatform with improved detection abilities in terms of high sensitivity, uniformity and reproducibility. Specifically, colloidal gold nanorods (GNRs) with a well-controlled plasmonic response were firstly synthesized and validated as efficient dual LSPR-SERS nanosensors in solution using the p-aminothiophenol (p-ATP) analyte. GNRs were then efficiently immobilized onto the paper via the immersion approach, thus obtaining plasmonic nanoplatforms with a modulated LSPR response. The successful deposition of the nanoparticles onto the cellulose fibers was confirmed by LSPR measurements, which demonstrate the preserved plasmonic response after immobilization, as well as by dark-field microscopy and scanning electron microscopy investigations, which confirm their uniform distribution. Finally, a limit of detection for p-ATP as low as 10 M has been achieved by our developed SERS-based paper nanoplatform, proving that our optimized plasmonic paper-based biosensing design could be further considered as an excellent candidate for miniaturized biomedical applications.
  • Publisher: Switzerland: MDPI AG
  • Language: English
  • Identifier: ISSN: 1424-8220
    EISSN: 1424-8220
    DOI: 10.3390/s18093035
    PMID: 30208609
  • Source: DOAJ Directory of Open Access Journals
    Geneva Foundation Free Medical Journals at publisher websites
    PubMed Central
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
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