Excited-state intramolecular proton transfer of 2-acetylindan-1,3-dione studied by ultrafast absorption and fluorescence spectroscopy
Please always quote using this URN: urn:nbn:de:bvb:20-opus-181301
- We employ transient absorption from the deep-UV to the visible region and fluorescence upconversion to investigate the photoinduced excited-state intramolecular proton-transfer dynamics in a biologically relevant drug molecule, 2-acetylindan-1,3-dione. The molecule is a ß-diketone which in the electronic ground state exists as exocyclic enol with an intramolecular H-bond. Upon electronic excitation at 300 nm, the first excited state of the exocyclic enol is initially populated, followed by ultrafast proton transfer (≈160 fs) to form theWe employ transient absorption from the deep-UV to the visible region and fluorescence upconversion to investigate the photoinduced excited-state intramolecular proton-transfer dynamics in a biologically relevant drug molecule, 2-acetylindan-1,3-dione. The molecule is a ß-diketone which in the electronic ground state exists as exocyclic enol with an intramolecular H-bond. Upon electronic excitation at 300 nm, the first excited state of the exocyclic enol is initially populated, followed by ultrafast proton transfer (≈160 fs) to form the vibrationally hot endocyclic enol. Subsequently, solvent-induced vibrational relaxation takes place (≈10 ps) followed by decay (≈390 ps) to the corresponding ground state.…
Author: | Pramod Kumar Verma, Andreas Steinbacher, Alexander Schmiedel, Patrick Nuernberger, Tobias Brixner |
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URN: | urn:nbn:de:bvb:20-opus-181301 |
Document Type: | Journal article |
Faculties: | Fakultät für Chemie und Pharmazie / Institut für Physikalische und Theoretische Chemie |
Language: | English |
Parent Title (English): | Structural Dynamics |
Year of Completion: | 2016 |
Volume: | 3 |
Article Number: | 023606 |
Source: | Structural Dynamics 2016, 3, 023606. DOI: 10.1063/1.4937363 |
DOI: | https://doi.org/10.1063/1.4937363 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 541 Physikalische Chemie |
Tag: | absorption spectra; excited states; fluorescence; fluorescence spectra; ground states; hydrogen bonding; reaction mechanisms; solvents; time resolved spectroscopy; ultraviolet light |
Release Date: | 2021/03/15 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung |