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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 32: Focus Session: Novel Approaches to Surface Plasmon Generated Charges and Heat for Photocatalysis I (joint session O/CPP)
CPP 32.1: Topical Talk
Wednesday, March 20, 2024, 15:00–15:30, MA 141
Plasmonic photothermal chemistry on single nanoparticles — •Andrea Baldi — Vrije Universiteit Amsterdam, The Netherlands
Metal nanoparticles strongly absorb light thanks to light-driven oscillations of their free electrons called plasmon resonances. The decay of these resonances can be used to drive chemical reactions via heating of the surrounding environment. In this talk, I will show how we quantify photothermal heating on single nanoparticles using a novel Raman-based thermometry [1] and how we use localized temperature gradients to drive the synthesis of hierarchical core-shell nanostructures [2].
[1] P. Li, S. H. C. Askes, E. del Pino Rosendo, F. Ariese, C. Ramanan, E. von Hauff, and A. Baldi, Nanoscale Thermometry of Plasmonic Structures via Raman Shifts in Copper Phthalocyanine, J. Phys. Chem. C 2023, 127, 9690-9698
[2] R. Kamarudheen, G. Kumari, and A. Baldi, Plasmon-driven synthesis of individual metal@semiconductor core@shell nanoparticles, Nature Communications 2020, 11:3957
Keywords: Plasmonic chemistry; Photothermal effects; Metal nanoparticles; Raman thermometry