Berlin 2024 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 21: Poster II
CPP 21.6: Poster
Dienstag, 19. März 2024, 18:00–20:00, Poster E
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 Pan2, Suo Tu2, Sarathlal Koyiloth Vayalil1, Daniel Söderberg4, Peter Müller-buschbaum2,3, and Stephan V. Roth1,4 — 1Deutsches Elektronen-Synchrotron, Hamburg, Germany — 2TUM School of Natural Sciences, Chair of Functional Materials, 85748 Garching, Germany — 3MLZ, 85748 Garching, Germany — 4KTH Royal Institute of Technology, Stockholm, Sweden
Cellulose has emerged as a promising bio-based substrate capable of synergistically combining with conductive materials for diverse applications including 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 and reproducible enhancements of the Raman signal over large areas. Herein, we present a straight-forward approach utilizing the layer-by-layer spray coating method to fabricate films loaded with gold nanoparticles and graphene oxide to serve as SERS substrates. To investigate the fundamental mechanisms of enhanced SERS performance, grazing incidence small-angle X-ray scattering was employed to gain comprehensive insights into the nanostructure. Therefore, our approach provides a reference for facile and scalable production of SERS substrates.
Keywords: cellulose; gold nanoparticles; graphene oxide; SERS