Stark absorption spectroscopy of indole and 3-methylindole
- 8 September 2004
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 121 (10) , 4730-4739
- https://doi.org/10.1063/1.1782076
Abstract
Indole and 3-methylindole (3-MI) doped into a polymethylmethacrylate (PMMA) film are studied by the Stark absorption (electroabsorption) spectroscopy. The 1La and 1Lb absorption bands are distinguished and the change in permanent dipole moment on 1La excitation is determined by a model fit to the measured absorption and electroabsorption spectra. Analysis of the spectra, measured at normal incidence and magic angle conditions, proved the essential role of the electric-field-induced orientation/alignment effects for polar indole and 3-MI molecules in the PMMA environment at room temperature.Keywords
This publication has 45 references indexed in Scilit:
- First reported evidence that solvent polarity induces an
L b ↔L a inversion in the indole chromophoreChemical Physics Letters, 2003 - Mechanisms of Tryptophan Fluorescence Shifts in ProteinsBiophysical Journal, 2001
- Evidence for La1 fluorescence from jet-cooled 3-methylindole-polar solvent complexesThe Journal of Chemical Physics, 2000
- Tryptophan Fluorescence Shifts in Proteins from Hybrid Simulations: An Electrostatic ApproachThe Journal of Physical Chemistry B, 1997
- [7] 1La and 1Lb transitions of tryptophan: Applications of theory and experimental observations to fluorescence of proteinsPublished by Elsevier ,1997
- Hybrid simulations of solvation effects on electronic spectra: Indoles in waterThe Journal of Chemical Physics, 1994
- Indole’s solvatochromism revisitedThe Journal of Chemical Physics, 1986
- On the nature of the fluorescent state of methylated indole derivativesChemical Physics, 1983
- Near-ultraviolet absorption bands of tryptopan. Studies using indole and 3-methylindole as modelsBiochemistry, 1970
- Electronic structures of carbazole and indole and the solvent effects on the electronic spectraTheoretical Chemistry Accounts, 1964