Rostock 2019 – scientific programme
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MO: Fachverband Molekülphysik
MO 18: Posters 2: Time Resolved Spectroscopy
MO 18.10: Poster
Wednesday, March 13, 2019, 16:15–18:15, S Foyer LLM
Porphyrin-functionalized covalent organic cage compounds as prototypical artificial light-harvesting systems — •Lysanne Monika Dietrich1,2, Matthias Hensen1, Evgenii Titov1, Roland Mitric1, Florian Beuerle2, and Tobias Brixner1 — 1Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg — 2Institut für Organische Chemie & Zentrum für Nanosystemchemie, Universität Würzburg, Am Hubland, 97074 Würzburg
One key challenge for the future will be to learn how to construct artificial molecular devices enabling the harvesting of sunlight and their use for photosynthetic approaches. Recent studies suggested that the flexibility of the donor-acceptor linking group of artificial photosynthetic materials is an important parameter for optimizing their performance [1]. In order to improve the understanding of photoinduced electron transfer processes characteristic of photosynthesis, we designed a novel porphyrin-containing covalent organic cage compound that can serve as an efficient host for [60]fullerene. Upon photoexcitation of the porphyrin donor moiety, an electron transfer to the encapsulated [60]fullerene is triggered presumably on the ultrafast timescale. Here we report on investigations on electron transfer processes of these supramolecular porphyrin fullerene hybrid systems by means of femtosecond transient absorption spectroscopy and quantum chemical calculations.
[1] C. A. Rozzi et. al., Nat. Commun. 4, 1602 (2013).