Picosecond photoinduced formation of a radical cation: CARS and transient absorption studies of 1,4-diphenylbutadiene
Langue
en
Article de revue
Ce document a été publié dans
Journal of Photochemistry and Photobiology A: Chemistry. 1997-05-30, vol. 105, n° 2, p. 217-223
Elsevier
Résumé en anglais
We report the direct observation of the formation and stabilization of the radical cation of 1,4-diphenylbutadiene (DPB) in polar solvents (acetonitrile, linear alcohols) by picosecond “pump-probe” and polarization-sensitive ...Lire la suite >
We report the direct observation of the formation and stabilization of the radical cation of 1,4-diphenylbutadiene (DPB) in polar solvents (acetonitrile, linear alcohols) by picosecond “pump-probe” and polarization-sensitive resonant CARS (Coherent Anti-Stokes Raman Scattering) experiments. For the first time, we have observed the formation and stabilization rate of the DPB radical cation which occurs on a 10–20 ps timescale. We confirm that the formation process is mainly monophotonic.< Réduire
Mots clés en anglais
CARS
Cation formation
Diphenylpolyenes
Excited states
Femtosecond
Non-linear optics
Transient absorption
Vibrational spectroscopy
Origine
Importé de halUnités de recherche