Morphology effect of photoconverted silver nanoparticles on the performance of surface-enhanced raman spectroscopy substrates

Nowadays, surface-enhanced Raman spectroscopy (SERS) substrates are of great interest for many researchers, aiming to fabricate substrates with high sensitivity and low fabrication costs. In this study, we photoconverted Ag nanoparticles by using a simple and affordable red−green−blue light-emitting...

Descripción completa

Detalles Bibliográficos
Autores principales: Puente, Carlos, Pineda Aguilar, Nayely, Gómez, Idalia, López, Israel
Formato: Artículo
Lenguaje:inglés
Publicado: American Chemical Society 2023
Materias:
Acceso en línea:http://eprints.uanl.mx/27712/7/27712.pdf
Descripción
Sumario:Nowadays, surface-enhanced Raman spectroscopy (SERS) substrates are of great interest for many researchers, aiming to fabricate substrates with high sensitivity and low fabrication costs. In this study, we photoconverted Ag nanoparticles by using a simple and affordable red−green−blue light-emitting diode photoreactor. The obtained dispersions were transformed into a paste of nanoparticles and used to fabricate SERS substrates by a simple drop-casting process under controlled humidity conditions. The performance of these substrates was tested using paminothiophenol as a Raman probe. The results indicate that the particle shape has an influence on the Raman intensities and substrate sensitivity, showing a significant enhancement as the number of faces and vertices in the particle increases.