Artículos de revistas
Produção de substratos sers eficientes através da deposição de ouro sobre um molde de microesferas de poliestireno
Fecha
2010Registro en:
Química Nova, v.33, n.10, p.2093-2097, 2010
0100-4042
10.1590/S0100-40422010001000017
Autor
SANTOS, Diego Pereira dos
ANDRADE, Gustavo Fernandes Souza
SANT'ANA, Antônio Carlos
TEMPERINI, Marcia L. A.
Institución
Resumen
This work reports on the SERS activity of a nanostructured substrate that was obtained by electrodepositing gold over a template consisting of polystyrene microspheres. This substrate displayed superior SERS performance for the detection of 4-merctaptopyridine as compared to a conventional roughened Au electrode. In order to investigate the substrate capability for the detection at low concentration limits, a series of Rhodamine 6G (1 nM) spectra were registered. Our spectral dynamics data is in agreement with single-molecule behavior, showing that the control over the substrate morphology is crucial to enable the production of highly reproducible and sensitive SERS substrates.