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Type: Artigo de periódico
Title: Surface-enhanced Raman scattering of 4-aminobenzenethiol on silver nanoparticles substrate
Author: Santos, ED
Sigoli, FA
Mazali, IO
Abstract: Active surface-enhanced Raman scattering (SERS) silver nanoparticles substrate was prepared by multiple depositions of Ag nanoparticles on glass slides. The substrate is based on five depositions of Ag nanoparticles on 3-aminopropyl-trimetoxisilane (APTMS) modified glass slides, using APTMS sol-gel as linker molecules between silver layers. The SERS performance of the substrate was investigated using 4-aminobenzenethiol (4-ABT) as Raman probe molecule. The spectral analyses reveal a 4-ABT Raman signal enhancement of band intensities, which allow the detection of this compound in different solutions. The average SERS intensity decreases significantly in 4-ABT diluted solutions (from 10(-4) to 10(-6) mol L-1), but the compound may still be detected with high signal/noise ratio. The obtained results demonstrate that the Ag nanoparticles sensor has a great potential as SERS substrate. (C) 2013 Elsevier B.V. All rights reserved.
Subject: Silver nanoparticles
Raman spectroscopy
Country: Holanda
Editor: Elsevier Science Bv
Citation: Vibrational Spectroscopy. Elsevier Science Bv, v. 68, n. 246, n. 250, 2013.
Rights: fechado
Identifier DOI: 10.1016/j.vibspec.2013.08.003
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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