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|title: ||Silver-bacterial cellulosic sponges as active SERS substrates|
|authors: ||Marques, Paula A. A. P.|
Nogueira, Helena I. S.
Pinto, Ricardo J. B.
Neto, Carlos Pascoal
|issue date: ||Apr-2008|
|publisher: ||John Wiley and Sons|
|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.|
|source: ||Journal of Raman Spectroscopy|
|appears in collections||DQ - Artigos|
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