Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-10103
Authors: | Zähringer, Till J. B. Moghtader, Julian A. Bertrams, Maria-Sophie Roy, Bibhisan Uji, Masanori Yanai, Nobuhiro Kerzig, Christoph |
Title: | Blue-to-UVB upconversion, solvent sensitization and challenging bond activation enabled by a benzene-based annihilator |
Online publication date: | 19-Feb-2024 |
Year of first publication: | 2022 |
Language: | english |
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: | 540 Chemie 540 Chemistry and allied sciences |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 09 Chemie, Pharmazie u. Geowissensch. |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-10103 |
Version: | Published version |
Publication type: | Zeitschriftenaufsatz |
Document type specification: | Scientific article |
License: | CC BY-NC |
Information on rights of use: | https://creativecommons.org/licenses/by-nc/4.0/ |
Journal: | Angewandte Chemie International Edition 62 8 |
Pages or article number: | e202215340 |
Publisher: | Wiley |
Publisher place: | Weinheim |
Issue date: | 2022 |
Publisher DOI: | 10.1002/anie.202215340 |
Relations: | is version of 10.25358/openscience-10098 |
Appears in collections: | DFG-491381577-H |
Files in This Item:
File | Description | Size | Format | ||
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bluetouvb_upconversion_solven-20240219155445398.pdf | 3.12 MB | Adobe PDF | View/Open |