Article
On the Electronic Structure of Cu Chlorophyllin and Its Breakdown Products: A Carbon K-Edge X-ray Absorption Spectroscopy Study
Author/s | Witte, Katharina
Mantouvalou, Ioanna Sánchez de Armas, María Rocío Lokstein, Heiko Lebendig-Kuhla, Janina Jonas, Adrian Roth, Friedrich Kanngießer, Birgit Stiel, Holger |
Department | Universidad de Sevilla. Departamento de Química Física |
Publication Date | 2018 |
Deposit Date | 2022-06-02 |
Published in |
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Abstract | Using near-edge X-ray absorption fine structure (NEXAFS) spectroscopy, the carbon backbone of sodium copper chlorophyllin (SCC), a widely used chlorophyll derivative, and its breakdown products are analyzed to elucidate ... Using near-edge X-ray absorption fine structure (NEXAFS) spectroscopy, the carbon backbone of sodium copper chlorophyllin (SCC), a widely used chlorophyll derivative, and its breakdown products are analyzed to elucidate their electronic structure and physicochemical properties. Using various sample preparation methods and complementary spectroscopic methods (including UV/Vis, X-ray photoelectron spectroscopy), a comprehensive insight into the SCC breakdown process is presented. The experimental results are supported by density functional theory calculations, allowing a detailed assignment of characteristic NEXAFS features to specific C bonds. SCC can be seen as a model system for the large group of porphyrins; thus, this work provides a novel and detailed description of the electronic structure of the carbon backbone of those molecules and their breakdown products. The achieved results also promise prospective optical pump/X-ray probe investigations of dynamic processes in chlorophyll-containing photosynthetic complexes to be analyzed more precisely. |
Funding agencies | German Minister für Bildung und Forschung (BMBF) European Union (UE) Czech Science Foundation. GACR |
Project ID. | 05KS4WE1/6
05KS7WE1 701647 P501/12/G055 |
Citation | Witte, K., Mantouvalou, I., Sánchez de Armas, M.R., Lokstein, H., Lebendig-Kuhla, J., Jonas, A.,...,Stiel, H. (2018). On the Electronic Structure of Cu Chlorophyllin and Its Breakdown Products: A Carbon K-Edge X-ray Absorption Spectroscopy Study. Journal of Physical Chemistry B, 122 (6), 1846-1851. |
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