Date added: 2026-04-07
The 41st Seminar of Advanced Materials Center
We warmly invite you to the 41st seminar of the Advanced Materials Center, which will take place on April 16th, 2026 (Thursday) at 1:15 p.m. in NE 140 (building 42, WETI B).
Prof. Grégoire Herzog, Université de Lorraine, CNRS, LCPME, France, will present a talk entitled "Polarised liquid-liquid interfaces modified with gold nanomaterials for SERS spectroelectrochemistry".
Prof. Grégoire Herzog is a CNRS researcher (and deputy director) at the Laboratory of Physical Chemistry and Microbiology for Materials and the Environment (CNRS-Université de Lorraine) since 2011. He is a specialist in analytical electrochemistry, in electrochemistry at liquid-liquid interfaces, micro-manufacturing processes, and surface modification. He graduated with a PhD in 2004 (University College Cork, Ireland). Between 2005 and 2011, he was affiliated with Tyndall National Institute. He has 20 years of experience in sensor development and has participated in several European Projects (DIMDESOTOM, FP5, GoodFood, FP6, SHOAL, BOND, FP7), serving as coordinator of several national research projects.
After the seminar, we traditionally invite you for pizza!
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Abstract:
Gold nanomaterials have been used at polarized liquid-liquid interfaces to serve as substrates for Surface Enhanced Raman Spectroscopy (SERS). Plasmonic soft interfaces provide opportunities to create highly reproducible, scalable and low-cost SERS substrate with high Raman enhancement factor. We have investigated the use of AuNP films floating at liquid-liquid interface, highlighting the impact of interfacial polarization on the Raman signal.
SERS of several organic ions were recorded at varying interfacial potential differences (methylene blue, tolmetin, norfloxacin). Using Raman 2D correlation analysis, we will show how the potential difference impacts the SERS signal of the targeted molecules and how the chemical environment contributes to the SERS signal.