Autoren:	Zähringer, Till J. B. Moghtader, Julian A. Bertrams, Maria-Sophie Roy, Bibhisan Uji, Masanori Yanai, Nobuhiro Kerzig, Christoph
Titel:	Blue-to-UVB upconversion, solvent sensitization and challenging bond activation enabled by a benzene-based annihilator
Online-Publikationsdatum:	19-Feb-2024
Erscheinungsdatum:	2022
Sprache des Dokuments:	Englisch
Zusammenfassung/Abstract:	Several energy-demanding photoreactions require harsh UV light from inefficient light sources. The conversion of low-energy visible light to high-energy singlet states via triplet-triplet annihilation upconversion (TTA-UC) could offer a solution for driving such reactions under mild conditions. We present the first annihilator with an emission maximum in the UVB region that, combined with an organic sensitizer, is suitable for blue-to-UVB upconversion. The annihilator singlet was successfully employed as an energy donor in subsequent FRET activations of aliphatic carbonyls. This hitherto unreported UC-FRET reaction sequence was directly monitored using laser spectroscopy and applied to mechanistic irradiation experiments demonstrating the feasibility of Norrish chemistry. Our results provide clear evidence for a novel blue light-driven substrate or solvent activation strategy, which is important in the context of developing more sustainable light-to-chemical energy conversion systems.
DDC-Sachgruppe:	540 Chemie 540 Chemistry and allied sciences
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 09 Chemie, Pharmazie u. Geowissensch.
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-10103
Version:	Published version
Publikationstyp:	Zeitschriftenaufsatz
Weitere Angaben zur Dokumentart:	Scientific article
Nutzungsrechte:	CC BY-NC
Informationen zu den Nutzungsrechten:	https://creativecommons.org/licenses/by-nc/4.0/
Zeitschrift:	Angewandte Chemie International Edition 62 8
Seitenzahl oder Artikelnummer:	e202215340
Verlag:	Wiley
Verlagsort:	Weinheim
Erscheinungsdatum:	2022
DOI der Originalveröffentlichung:	10.1002/anie.202215340
Beziehungen:	is version of 10.25358/openscience-10098
Enthalten in den Sammlungen:	DFG-491381577-H