Rapid solvation of a nonpolar solute measured by ultrafast transient holeburning

Holeburning spectra from 1 ps to 1.2 ns have been measured for dimethyl- s-tetrazine dissolved in glycerol triacetate. Clean excitation of the well-separated 0–0 vibronic transition insures that only solvent dynamics contribute to the hole broadening. The majority of the interaction relaxes in less...

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Bibliographic Details
Published in:Chemical physics letters 1990-11, Vol.174 (5), p.476-480
Main Authors: Jong Kang, Tai, Yu, Jongwan, Berg, Mark
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Intensities and shapes of molecular spectral lines and bands
Molecular properties and interactions with photons
Physics
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Summary:Holeburning spectra from 1 ps to 1.2 ns have been measured for dimethyl- s-tetrazine dissolved in glycerol triacetate. Clean excitation of the well-separated 0–0 vibronic transition insures that only solvent dynamics contribute to the hole broadening. The majority of the interaction relaxes in less than a picosecond, with a second process relaxing in ≈ 2 ps. This solvation process is much faster than the 700 ps dielectric solvation of a highly polar solute in the same solvent, as measured by time-resolved Stokes shifts.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(90)87182-Q