Green synthesis of Eosin-Y coated silver nanoparticles for sensitive and selective fluorometric detection of L-Dopa
This study is to produce biogenic silver nanoparticles (AgNPs) by utilizing aqueous extracts derived from Turnera Sublata (TS) leaves under visible light. Subsequently, these nanoparticles are coated with eosin-yellow (EY) to enhance sensitivity and selectivity in L-3,4-dihydroxyphenylalanine (L-dop...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
15 January 2025
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| In: |
Journal of fluorescence
Year: 2025, Pages: 1-12 |
| ISSN: | 1573-4994 |
| DOI: | 10.1007/s10895-024-04116-7 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s10895-024-04116-7 Verlag, lizenzpflichtig, Volltext: https://link.springer.com/article/10.1007/s10895-024-04116-7 
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| Verfasserangaben: | Karuppiah Nagaraj, P. Thangamuniyandi, Gunasekaran Velmurugan, Khalid M. Alotaibi, K. Raja, Bhuwanesh K. Sharma |
| Zusammenfassung: | This study is to produce biogenic silver nanoparticles (AgNPs) by utilizing aqueous extracts derived from Turnera Sublata (TS) leaves under visible light. Subsequently, these nanoparticles are coated with eosin-yellow (EY) to enhance sensitivity and selectivity in L-3,4-dihydroxyphenylalanine (L-dopa) detection. This method encompasses the deposition of metal onto the Ag NPs, resulting in the formation of EY-AgNPs. The crystalline, spherical nanoparticles, prepared as described, exhibit a particle size of 20 nm. Different instruments were used to characterize them, including UV-Vis spectroscopy, fluorescence spectroscopy, FTIR spectroscopy, selected area electron diffraction (SAED), transmission electron microscopy (TEM), and X-ray diffraction (XRD) analysis. The spherical structured morphology and size of the EY-AgNPs has been confirmed through SAED and TEM studies. This study pioneered the integration of characteristic hydroxyl-Ag chemistry and specialized steric interference of organic pigment in luminescent AgNPs to develop a simple method for detecting dopa. The sensor’s dynamic range and limit of detection were assessed. Experimental results revealed that green-emitting AgNPs shielded by interference from biogenic AgNPs and the strong affinity of hydroxyl-silver provided a high-sensitivity detection limit of 1.84 nM. Furthermore, a new green approach for sensor development using human serum albumin (HSA) assay demonstrated that organic dye on the surface of nanomaterials further enhances sensing properties. |
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| Beschreibung: | Gesehen am 19.09.2025 |
| Beschreibung: | Online Resource |
| ISSN: | 1573-4994 |
| DOI: | 10.1007/s10895-024-04116-7 |