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Localized surface plasmon resonance sensing of Trenbolone acetate dopant using silver nanoparticles.
Juma, Moses Wabwile; Birech, Zephania; Mwenze, Nancy Mwikali; Ondieki, Annah Moraa; Maaza, Malik; Mokhotjwa, Simon Dhlamini.
Afiliación
  • Juma MW; UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology (U2ACN2), College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa. jmwabwire@gmail.com.
  • Birech Z; NANOAFNET, iThemba LABS-National Research Foundation of South Africa, 1 Old Faure Road, Cape Town, 7129, Western Cape, South Africa. jmwabwire@gmail.com.
  • Mwenze NM; Department of Physics, University of South Africa, Muckleneuk Ridge, Pretoria, 0001, South Africa. jmwabwire@gmail.com.
  • Ondieki AM; Laser Physics and Spectroscopy Research Group, Department of Physics, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya. jmwabwire@gmail.com.
  • Maaza M; Laser Physics and Spectroscopy Research Group, Department of Physics, University of Nairobi, P.O Box 30197-00100, Nairobi, Kenya.
  • Mokhotjwa SD; UNESCO-UNISA Africa Chair in Nanoscience and Nanotechnology (U2ACN2), College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa.
Sci Rep ; 14(1): 5721, 2024 Mar 08.
Article en En | MEDLINE | ID: mdl-38459089
ABSTRACT
In this work, localized surface plasmon resonance (LSPR) sensing as applicable in the detection of Trenbolone acetate dopant is demonstrated. We show that the LSPR of the Trenbolone acetate/silver nanoparticle (Tren Ac/AgNPs) complex is sensitive to changes in the adsorbent concentration. The results show an average redshift of + 18 nm in the LSPR peak with variations in intensity and broadening behavior of the LSPR band of the Tren Ac/AgNPs complex. AgNPs were synthesized using laser ablation in liquid (LAL) technique with water as the solvent. UV-Vis spectroscopy was used for absorbance measurements and particle size and morphology were monitored using scanning electron microscopy (SEM). The aggregation behavior of the Tren Ac/AgNPs complex was monitored using energy-dispersive X-ray spectroscopy (EDS). Molecular Electrostatic Potential (MEP) and the HOMO-LUMO orbitals of the optimized Trenbolone acetate structure were obtained using Density Function Theory (DFT). The molecule was optimized at the B3LYP level of theory using the 6-311 basis set carried out using the Gaussian 09 software package. The results showed that O2- is Trenbolone acetate's active site that would interact with Ag+ to form a complex that would influence the plasmon behavior. The results presented in this work demonstrate the feasibility of LSPR for anabolic androgenic steroid detection.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: Sudáfrica Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: Sudáfrica Pais de publicación: Reino Unido