SERS study on adenine using a Ag/poly(t-butylacrylate) nanocomposite

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abstract

Enhancement of Raman signals of the nucleobase adenine on an Ag based composite was studied using the 1064 nm laser line. The composite comprise emulsions of Ag nanoparticles encapsulated in poly(t-butylacrylate) (PtBA) beads that act as substrate for the Surface-Enhanced Raman Scattering (SERS) of adenine. For this system, Raman enhancement was observed for the ring-stretching vibrational mode of adenine after aggregation of the Ag/poly(t-butylacrylate) emulsion and isolation of the solid composite. This is a convenient and alternative analytical approach to SERS monitoring of solutions of adenine over the more common use of pure Ag colloids. As a consequence, this research contributes to develop innovative studies on DNA fragments using polymeric platforms that can act as highly sensitive SERS substrates. (C) 2012 Elsevier B.V. All rights reserved.

keywords

ENHANCED RAMAN-SPECTROSCOPY; DNA BASES; SCATTERING; NANOPARTICLES; BIOANALYSIS; FILMS; PH

subject category

Spectroscopy

authors

Pinheiro, PC; Fateixa, S; Nogueira, HIS; Trindade, T

our authors

foto Helena Isabel Seguro Nogueira

Helena Isabel Seguro Nogueira

Assistant Professor
foto Paula Pinheiro

Paula Pinheiro

Research Fellowship
foto Sara Isabel Augusto Fateixa

Sara Isabel Augusto Fateixa

Researcher
foto Tito Trindade

Tito Trindade

Full professor

Groups

1 - Inorganic Functional Nanomaterials and Organic-Inorganic Hybrids

Projects

Magnetotransduction: development of magnetic nanoparticles-viral vector complexes for therapeutic gene delivery in the senile brain (EULANEST European-Latin American Network for Science and Technology) (NEURONANO)
Centre for Research in Ceramics and Composite Materials - CICECO (LA0011: 2011-2012) (PEst-C/CTM/LA0011/2011)

acknowledgements

We thank Fundacao para a Ciencia e Tecnologia (FCT/FEDER) for the grant SFRH/BD/66460/2009 (S. Fateixa) and projects ERA-Eula/0003/2009 (P.C. Pinheiro), and Pest-C/CTM/LA0011/2011, FSE and POPH.

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Publication Details

type
Journal Article
year
2013
journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
volume
101
publisher
PERGAMON-ELSEVIER SCIENCE LTD
issn
1386-1425
digital object identifier
10.1016/j.saa.2012.09.079
web of science article identifier
WOS:000312690800006

Journal Metrics (JCR 2019)

Journal Impact Factor
3.232
Journal Impact Factor (5 yrs)
2.848
category normalized journal percentile
84.524

Citations

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