Folding-induced fluorescence enhancement in a series of merocyanine hetero-folda-trimers
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- Many dyes suffer from fast non-radiative decay pathways, thereby showing only short-lived excited states and weak photoluminescence. Here we show a pronounced fluorescence enhancement for a weakly fluorescent merocyanine (MC) dye by being co-facially stacked to other dyes in hetero-folda-trimer architectures. By means of fluorescence spectroscopy (lifetime, quantum yield) the fluorescence enhancement was explained by the rigidification of the emitting chromophore in the defined foldamer architecture and the presence of a non-forbidden lowestMany dyes suffer from fast non-radiative decay pathways, thereby showing only short-lived excited states and weak photoluminescence. Here we show a pronounced fluorescence enhancement for a weakly fluorescent merocyanine (MC) dye by being co-facially stacked to other dyes in hetero-folda-trimer architectures. By means of fluorescence spectroscopy (lifetime, quantum yield) the fluorescence enhancement was explained by the rigidification of the emitting chromophore in the defined foldamer architecture and the presence of a non-forbidden lowest exciton state in H-coupled hetero-aggregates. This folding-induced fluorescence enhancement (FIFE) for specific sequences of π-stacked dyes points at a viable strategy toward improved fluorophores that relates to the approach used by nature in the green fluorescent protein (GFP).…
Autor(en): | Alexander Schulz, Frank WürthnerORCiDGND |
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URN: | urn:nbn:de:bvb:20-opus-256582 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Chemie und Pharmazie / Institut für Organische Chemie |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Angewandte Chemie International Edition |
Erscheinungsjahr: | 2022 |
Band / Jahrgang: | 61 |
Heft / Ausgabe: | 2 |
Aufsatznummer: | e202114667 |
Originalveröffentlichung / Quelle: | Angewandte Chemie International Edition (2022) 61:2, e202114667. DOI: 10.1002/anie.202114667 |
DOI: | https://doi.org/10.1002/anie.202114667 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 54 Chemie / 547 Organische Chemie |
Freie Schlagwort(e): | aggregation; dyes/pigments; fluorescence; folding; merocyanines; organic chemistry |
Datum der Freischaltung: | 25.02.2022 |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |