First Steps of in Situ Surface-Enhanced Raman Scattering During Shipboard Experiments

Type Article
Date 2010-10
Language English
Author(s) Peron Olivier2, Rinnert EmmanuelORCID1, Colas FlorentORCID1, Lehaitre Michel1, Compere ChantalORCID1
Affiliation(s) 1 : IFREMER, Serv Interfaces & Capteurs, F-29280 Plouzane, France.
Source Applied Spectroscopy (0003-7028) (Soc Applied Spectroscopy), 2010-10 , Vol. 64 , N. 10 , P. 1086-1093
DOI 10.1366/000370210792973505
WOS© Times Cited 11
Keyword(s) Surface-enhanced Raman scattering, SERS, Chemosensors, Flow cells, Shipboard experiments, In situ measurements, Freundlich isotherm
Abstract It is shown that the surface-enhanced Raman scattering (SERS) technique can be applied to detect organic molecules during in situ experiments. To this purpose, we used trans-1,2-bis(4-pyridyl)ethylene (BPE) as a target molecule. Adsorbed on the SERS chemosensor surface and excited under laser, the vibration modes of the molecules can be identified. SERS chemosensors are based on quartz substrates functionalized by silanization and partially coated with gold nanoparticles. SERS measurements during shipboard experiments were made with a home-made in situ Raman spectrometer connected to a marinized micro-fluidic system. The device was designed to host chemosensors in order to ensure measurements with a flow cell. A theoretical limit of detection was estimated in the range of picomolar (pM) concentrations based on Freundlich isotherm calculations.
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