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MO: Fachverband Molekülphysik
MO 7: Poster: Spectroscopy
MO 7.10: Poster
Dienstag, 12. März 2024, 17:00–19:00, Tent C
Ultrafast Time-Resolved NIR-Spectroscopy of Metal Complexes — •Nina Brauer1, Miguel Andre Argüello Cordero1, Samira Dabelstein1, Jakob Steube2, Lennart Schmitz2, Matthias Bauer2, and Stefan Lochbrunner1 — 1University of Rostock, Germany — 2University of Paderborn, Germany
Light induced charge transfer in metal complexes is a crucial part in many photocatalytic processes and holds great potential for future applications in solar energy harvesting. However, today most of the utilized organo-metallic complexes contain a rare metal center ion, such as ruthenium or iridium. A promising, cost-efficient replacement are iron based complexes, which are the subject of current research to optimize their photoactive properties.
One of the most prominent measurement techniques is transient absorption spectroscopy, during which the sample is photoexcited and probed with a broadband femtosecond laser pulse. Up until now, time-resolved measurements of iron complexes have been limited to the spectral region of visible light. In this work, the supercontinuum from an Yttrium Aluminum Garnet (YAG) crystal is used to probe the transient absorption of Fe(III)-complexes in the near-infrared (NIR). With a probing spectrum ranging from 820 nm up to 1250 nm, the dynamics of the excited state absorption of these complexes are investigated.
Keywords: Near-infrared; Femtosecond Transient Absorption Spectroscopy; Metal Complexes