Splitting of the Zero Phonon Lines of Indole, 3-Methyl Indole, Tryptamine and N-Acetyl Tryptophan Amide in Helium Droplets
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A. Lindinger
The high resolution vibronic spectra of the S1←S0 transition (ν≈34900 - 35300 cm-1) of indole and its derivatives 3-methyl indole, tryptamine and N-acetyl tryptophan amide (NATA) embedded in large (N∼103-104) helium droplets exhibit an unexpected splitting of the zero phonon lines. Up to four components are observed, also for the different conformers in tryptamine, with spacings of about Δν≈1-2 cm-1 not seen in previous studies of the embedded amino acids tryptophan and tyrosine and other organic molecules. The split levels are attributed to different arrangements of two He atoms from the bath which are localized at the two different sites on the two sides of the indole chromophore. The relative intensities of the different components depend on the particular “side chain” attached to a common indole chromophore.
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- The Rate Constant for the Recombination Reaction Between CF3 and O2 Measured Between 2 and 110 Torr
- Spectrally Resolved Phosphorescence and Slow Fluorescence from Selected Vibronic Levels of Jet-Cooled Glyoxal
- Delayed Excimer Fluorescence of Fluoranthene Due to Triplet-Triplet Annihilation: Systematic Study of the Fluorescence from a Weakly Bound Excimer
- Ab Initio Studies of Complexes of HO2 Radicals with NH3, H2O, and HF
- Linear Triplet SiC3 and SiC5: Results of Coupled Cluster Calculations
- Splitting of the Zero Phonon Lines of Indole, 3-Methyl Indole, Tryptamine and N-Acetyl Tryptophan Amide in Helium Droplets
- Nonequilibrium Excitation of C2 Radicals during the Thermal Decomposition of C3 O2 behind Shock Waves
- Book Reviews
Artikel in diesem Heft
- Detailed Kinetic Investigation of the C2H5+Cl2 Reaction and Analysis of the Reaction of CH3+Cl2 Initiated by H-Atom Contamination at 298K and at Millitorr Pressures
- The Rate Constant for the Recombination Reaction Between CF3 and O2 Measured Between 2 and 110 Torr
- Spectrally Resolved Phosphorescence and Slow Fluorescence from Selected Vibronic Levels of Jet-Cooled Glyoxal
- Delayed Excimer Fluorescence of Fluoranthene Due to Triplet-Triplet Annihilation: Systematic Study of the Fluorescence from a Weakly Bound Excimer
- Ab Initio Studies of Complexes of HO2 Radicals with NH3, H2O, and HF
- Linear Triplet SiC3 and SiC5: Results of Coupled Cluster Calculations
- Splitting of the Zero Phonon Lines of Indole, 3-Methyl Indole, Tryptamine and N-Acetyl Tryptophan Amide in Helium Droplets
- Nonequilibrium Excitation of C2 Radicals during the Thermal Decomposition of C3 O2 behind Shock Waves
- Book Reviews
