ArticleAngewandte Chemie (International ed. in English)2022
Electronic Structure Changes of an Aromatic Amine Photoacid along the Förster Cycle.
Article in Angewandte Chemie (International ed. in English), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Photochemistry of Aromatic N-Oxides in Water Probed by Time-Resolved X-ray Absorption Spectroscopy.Chemistry (Weinheim an der Bergstrasse, Germany) · 2026Article
- A dual experimental-theoretical perspective on ESPT photoacids and their challenges ahead.Chemical science · 2025Review
- Ultrafast Mapping of Electronic and Nuclear Structure in the Photo Dissociation of Nitrogen Dioxide.The journal of physical chemistry letters · 2024Article
- Excited-State Identification of a Nickel-Bipyridine Photocatalyst by Time-Resolved X-ray Absorption Spectroscopy.The journal of physical chemistry letters · 2024Article
- pH Jumps in a Protic Ionic Liquid Proceed by Vehicular Proton Transport.The journal of physical chemistry letters · 2022Article
- Electronic Structure Changes of an Aromatic Amine Photoacid along the Förster Cycle.Angewandte Chemie (International ed. in English) · 2022Article
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Authors and funding
14 authors.
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Abstract
Photoacids show a strong increase in acidity in the first electronic excited state, enabling real-time studies of proton transfer in acid-base reactions, proton transport in energy storage devices and biomolecular sensor protein systems. Several explanations have been proposed for what determines photoacidity, ranging from variations in solvation free energy to changes in electronic structure occurring along the four stages of the Förster cycle. Here we use picosecond nitrogen K-edge spectroscopy to monitor the electronic structure changes of the proton donating group in a protonated aromatic amine photoacid in solution upon photoexcitation and subsequent proton transfer dynamics. Probing core-to-valence transitions locally at the amine functional group and with orbital specificity, we clearly reveal pronounced electronic structure, dipole moment and energetic changes on the conjugate photobase side. This result paves the way for a detailed electronic structural characterization of the photoacidity phenomenon.
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