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Updated: May 17, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Frequency shift in graphene-enhanced Raman signal of molecules
Fatemeh Yaghobian1, Tobias Korn, Christian Schüller
1Institute of Experimental and Applied Physics, University of Regensburg, 93040 Regensburg, Germany. Fatemeh.Yaghobian@physik.uni-regensburg.de
Abstract:
Graphene-enhanced Raman scattering (GERS) is emerging as an important method due to the need for highly reproducible, quantifiable, and biocompatible active substrates. As a result of its unique two-dimensional carbon structure, graphene provides particularly large enhanced Raman signals for molecules adsorbed on its surface. In this work, the GERS signals of a test molecule, 4-mercaptobenzoic acid (4-MBA), with reproducible enhancement factors are discussed and compared with surface-enhanced Raman scattering (SERS) signals from highly active substrates, covered with spherical silver nanoparticles. It is shown that chemical interactions between the molecule and graphene can result in a frequency shift in the graphene-enhanced Raman signal of the molecule.
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