Regensburg 2025 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 15: Poster Session I
CPP 15.19: Poster
Monday, March 17, 2025, 19:00–21:00, P4
Biopolymer-Templated Deposition of Hierarchical 3D-Structured Graphene Oxide/Gold Nanoparticle Hybrids for Surface-Enhanced Raman Scattering — •Yingjian Guo1,2, Jungui Zhou1, Constantin Harder1,2, Guangjiu Pan1, Yusuf Bulut1,2, Gergely Nemeth3, Ferenc Borondics3, Benedikt Sochor1, Sarathlal K. Vayalil1, Daniel Söderberg4, Peter Müller-Buschbaum2, and Stephan V. Roth1,4 — 1Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany — 2TUM School of Natural Sciences, Chair for Functional Materials, 85748 Garching, Germany — 3Synchrotron SOLEIL, Saint-Aubin, France — 4KTH Royal Institute of Technology, Stockholm, Sweden
Cellulose has emerged as a promising bio-based template for sensors, smart windows, and bioelectronics. Typically, Surface Enhanced Raman Scattering (SERS), an advantageous analytical technique, allows for the rapid detection and structural analysis of chemical compounds through their spectral patterns in nanotechnology. Crucial for SERS is fabricating the substrates with strong enhancements of the Raman signal over large areas. Herein, we present a straightforward approach utilizing the layer-by-layer spray coating method to fabricate films loaded with gold nanoparticles and graphene oxide to serve as SERS substrates. GISAXS combined with nano-FTIR spectroscopy was used to confirm a synergistic Raman enhancement mechanism of localized surface plasmon resonance and interface charge transfer. Our approach provides a reference for facile and scalable production of SERS substrates.
Keywords: cellulose; gold nanoparticles; graphene oxide; SERS