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SERS for the analysis of objects of art and archaeology

AutorCañamares, María Vega
Fecha de publicación8-jun-2017
CitaciónChemArt (2017)
ResumenThe analysis of dyes in cultural heritage samples is a well-known challenging task, due to their inherent high tinting strength and consequent low concentration in the carrying matrix [1]. This fact severely limits the number of analytical techniques that can be efficiently and micro-destructively employed for their detection and unambiguous identification. Vibrational spectroscopic techniques such as infrared and Raman spectroscopies have been employed with consistent difficulties associated to the sample typology itself and the amount necessary to obtain good quality spectra [2]. The introduction of Surface-Enhanced Raman Spectroscopy (SERS) [3] to the field of conservation science has made the study of such materials possible and more straightforward, both as free molecules [4] and as in artworks [1, 5]. This is possible thanks to SERS ability to yield good signal-to-noise ratio spectra from a very low amount of sample, as well as to the quenching of the fluorescence emission, an additional obstacle when working with traditional Raman spectroscopy. SERS is a very sensitive technique that gives rise to a huge Raman emission due to the giant intensification of the radiation intensity in the presence of metal nanoparticles mediated by the plasmon resonance of selected metals such as Au and Ag [6].
DescripciónChemistry in Art and Cultural Heritage, 2017, Academy of Fine Arts, Vienna (Austria), 8th Jun 2017. -- http://www.ntk.akbild.ac.at/ChemArt_e.html#
Aparece en las colecciones: (CFMAC-IEM) Comunicaciones congresos
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