Silver-bacterial cellulosic sponges as active SERS substrates
authors Marques, PAAP; Nogueira, HIS; Pinto, RJB; Neto, CP; Trindade, T
nationality International
journal JOURNAL OF RAMAN SPECTROSCOPY
author keywords SERS; silver nanoparticles; bacterial cellulose; nanocomposites
keywords SURFACE-ENHANCED RAMAN; NANOPARTICLES; ADSORPTION; SPECTROSCOPY; SCATTERING; MEMBRANES; FILMS; 2,2'-DITHIODIPYRIDINE; PALLADIUM; ELECTRODE
abstract Synthetic Ag-bacterial cellulose nanocomposites are reported here and their performance as surface enhanced Raman scattering (SERS) substrates was investigated using thiosalicylic acid and 2,2'-dithiodipyridine as analytes. These nanocomposite materials act as natural sponges when immersed in aqueous or ethanolic solutions allowing capture and SERS detection of certain dissolved molecules. The detection limits for the above organic analytes reached concentrations as low as 10(-4) mol.dm(-3) and are considerably lower than the conventional vegetable cellulose analogs. Furthermore, we anticipate that the use of these nanocomposites has a beneficial consequence for the development of handy and active cellulosic SERS substrates, in particular for bioanalysis, as we experimentally demonstrated by testing the amino acids L-phenylalanine, L-glutamin and L-histidine. Copyright (c) 2008 John Wiley & Sons, Ltd.
publisher JOHN WILEY & SONS LTD
issn 0377-0486
year published 2008
volume 39
issue 4
beginning page 439
ending page 443
digital object identifier (doi) 10.1002/jrs.1853
web of science category Spectroscopy
subject category Spectroscopy
unique article identifier WOS:000255206600002
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journal impact factor 2
5 year journal impact factor 2.272
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