Please use this identifier to cite or link to this item: https://oa.tib.eu/renate/handle/123456789/4713
Title: Photophysics of BODIPY dyes as readily designable photosensitisers in light-driven proton reduction
Authors: Dura, LauraWächtler, MariaKupfer, StephanKübel, JoachimAhrens, JohannesHöfler, SebastianBröring, MartinDietzek, BenjaminBeweries, Torsten
Publishers version: https://doi.org/10.3390/inorganics5020021
URI: https://doi.org/10.34657/5129
https://oa.tib.eu/renate/handle/123456789/4713
Issue Date: 2017
Published in: Inorganics 5 (2017), Nr. 2
Publisher: Basel : MDPI
Abstract: A series of boron dipyrromethene (BODIPY) dyes was tested as photosensitisers for light-driven hydrogen evolution in combination with the complex [Pd(PPh3)Cl2]2 as a source for catalytically-active Pd nanoparticles and triethylamine as a sacrificial electron donor. In line with earlier reports, halogenated dyes showed significantly higher hydrogen production activity. All BODIPYs were fully characterised using stationary absorption and emission spectroscopy. Time-resolved spectroscopic investigations on meso-mesityl substituted compounds revealed that reduction of the photo-excited BODIPY by the sacrificial agent occurs from an excited singlet state, while, in halogenated species, long-lived triplet states are present, determining electron transfer processes from the sacrificial agent. Quantum chemical calculations performed at the time-dependent density functional level of theory indicate that the differences in the photocatalytic performance of the present series of dyes can be correlated to the varying efficiency of intersystem crossing in non-halogenated and halogenated species and not to alterations in the energy levels introduced upon substitution.
Keywords: BODIPY; hydrogen; photochemistry; photophysics; quantum chemical simulations
Type: article; Text
Publishing status: publishedVersion
DDC: 530
540
License: CC BY 4.0 Unported
Link to license: https://creativecommons.org/licenses/by/4.0/
Appears in Collections:Ingenieurwissenschaften

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Dura, Laura, Maria Wächtler, Stephan Kupfer, Joachim Kübel, Johannes Ahrens, Sebastian Höfler, Martin Bröring, Benjamin Dietzek and Torsten Beweries, 2017. Photophysics of BODIPY dyes as readily designable photosensitisers in light-driven proton reduction. 2017. Basel : MDPI
Dura, L., Wächtler, M., Kupfer, S., Kübel, J., Ahrens, J., Höfler, S., Bröring, M., Dietzek, B. and Beweries, T. (2017) “Photophysics of BODIPY dyes as readily designable photosensitisers in light-driven proton reduction.” Basel : MDPI. doi: https://doi.org/10.3390/inorganics5020021.
Dura L, Wächtler M, Kupfer S, Kübel J, Ahrens J, Höfler S, Bröring M, Dietzek B, Beweries T. Photophysics of BODIPY dyes as readily designable photosensitisers in light-driven proton reduction. Vol. 5. Basel : MDPI; 2017.
Dura, L., Wächtler, M., Kupfer, S., Kübel, J., Ahrens, J., Höfler, S., Bröring, M., Dietzek, B., & Beweries, T. (2017). Photophysics of BODIPY dyes as readily designable photosensitisers in light-driven proton reduction (Version publishedVersion, Vol. 5). Version publishedVersion, Vol. 5. Basel : MDPI. https://doi.org/https://doi.org/10.3390/inorganics5020021
Dura L, Wächtler M, Kupfer S, Kübel J, Ahrens J, Höfler S, Bröring M, Dietzek B, Beweries T. Photophysics of BODIPY dyes as readily designable photosensitisers in light-driven proton reduction. 2017;5(2). doi:https://doi.org/10.3390/inorganics5020021


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