Femtosecond time-resolved electronic relaxation dynamics in tetrathiafulvalene

Journal Article · Thu May 21 00:00:00 EDT 2015 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4921319· OSTI ID:22415800

Staedter, D.; Polizzi, L. ^[1]; Thiré, N. ^[1]; Mairesse, Y. ^[2]; Mayer, P. ^[3]

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1. Laboratoire de Collisions, Agrégats et Réactivité, IRSAMC, Université de Toulouse-CNRS, 31062 Toulouse (France)
2. Centre des Laser Intenses et Applications, Université de Bordeaux-CNRS, 33405 Talence (France)
3. Chemistry Department, University of Ottawa, Ottawa, Ontario K1N 6N5 (Canada)

In the present paper, the ultrafast electronic relaxation of tetrathiafulvalene (TTF) initiated around 4 eV is studied by femtosecond time-resolved velocity-map imaging. The goal is to investigate the broad double structure observed in the absorption spectrum at this energy. By monitoring the transients of the parent cation and its fragments and by varying the pump and the probe wavelengths, two internal conversions and intramolecular vibrational relaxation are detected both on the order of a few hundred of femtoseconds. Photoelectron images permit the assignment of a dark electronic state involved in the relaxation. In addition, the formation of the dimer of TTF has been observed.

• OSTI ID: 22415800
• Journal Information: Journal of Chemical Physics, Vol. 142, Issue 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION SPECTRA
CATIONS
DIMERS
EV RANGE
IMAGES
INTERNAL CONVERSION
PROBES
RELAXATION
TETRATHIAFULVALENE
TIME RESOLUTION
TRANSIENTS
VELOCITY