Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/53779
Type: Artigo de periódico
Title: A simple method to synthesize fluorescent modified gold nanoparticles using tryptamine as the reducing and capping agent
Author: de Carvalho, MA
Andrade, PF
Corbi, FCA
Goncalves, MD
Formiga, ALB
Mazali, IO
Bonacin, JA
Corbi, PP
Abstract: A simple method to synthesize fluorescent modified gold nanoparticles using tryptamine as the reducing and capping agent is described. The presented method produces gold nanoparticles with 36.65 +/- 5.30 nm average size. The modified gold nanoparticles were characterized by elemental and thermal analyses, dynamic light scattering, transmission electron microscopy, zeta potential, X-ray powder diffraction and spectroscopic techniques, such as electronic spectroscopy in ultraviolet-visible and fluorescence excitation-emission. In addition, modified gold nanoparticles were analyzed by solid state N-15 nuclear magnetic resonance spectroscopy, which confirmed the coordination of tryptamine on the gold nanoparticles surface. A prominent characteristic observed is the fluorescence of tryptamine which was not quenched after the coordination to gold nanoparticles. The results presented in this paper confirm the modification of gold nanoparticles by tryptamine and suggest potential use of such nanoparticles as labeling dye in biological systems. (C) 2013 Elsevier B.V. All rights reserved.
Subject: Tryptamine
Gold nanoparticles
Solid state N-15 NMR
Fluorescence
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.synthmet.2013.09.038
Date Issue: 2013
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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