SKM 2023 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.9: Poster
Montag, 27. März 2023, 18:00–20:00, P3
Influence of Ligands and Linker on the Optoelectronic Properties of Phenazine-based Iron Spin-Crossover Complexes — •Lydia Ploss1, Florian Daumann2, Konstantin Schötz1, Gerald Hörner2, Birgit Weber2, and Anna Köhler1,3 — 1Experimental Physics II, University of Bayreuth — 2Anorganische Chemie IV, University of Bayreuth — 3Bayreuth Institute of Macromolecular Research, University of Bayreuth
Spin-crossover (SCO) complexes are a class of materials - typically organo-metallic complexes - whose electronic ground state can be switched between a high spin (HS) and a low spin (LS) state by external stimuli, e.g., by varying the temperature. This possibility renders them promising candidates for applications such as molecular switches or sensors.
An easy way to read out sensors is, e.g., by using photoluminescence (PL) spectroscopy. Recently, an iron-based SCO complex was found that shows PL in both spin states.1 This is remarkable since most SCO complexes show PL in only one of the two spin states or are not luminescent at all. To understand what defines the optical properties of such compounds, we systematically vary ligands and linker molecules of the complexes and investigate their influence on the optical properties of the resulting complexes, using absorption and temperature-dependent PL spectroscopy.
1Lochenie et al., J. Am. Chem. Soc. 2018, 140, 2, 700-709