TY  - JOUR
A1  - Verma, Pramod Kumar
A1  - Steinbacher, Andreas
A1  - Schmiedel, Alexander
A1  - Nuernberger, Patrick
A1  - Brixner, Tobias
T1  - Excited-state intramolecular proton transfer of 2-acetylindan-1,3-dione studied by ultrafast absorption and fluorescence spectroscopy
T2  - Structural Dynamics
N2  - 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 the vibrationally hot endocyclic enol. Subsequently, solvent-induced vibrational relaxation takes place (≈10 ps) followed by decay (≈390 ps) to the corresponding ground state.
KW  - time resolved spectroscopy
KW  - ground states
KW  - fluorescence spectra
KW  - absorption spectra
KW  - ultraviolet light
KW  - hydrogen bonding
KW  - excited states
KW  - reaction mechanisms
KW  - fluorescence
KW  - solvents
Y1  - 2016
UR  - https://opus.bibliothek.uni-wuerzburg.de/frontdoor/index/index/docId/18130
UR  - https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-181301
VL  - 3
ER  -