Femtosecond multicolor pump-probe study of ultrafast electron transfer of [(NH3)(5)(RuNCRuII)-N-III(CN)(5)](-) in aqueous solution Academic Article uri icon


  • Femtosecond multicolor pump-probe spectroscopy on the prototypical intramolecular electron-transfer compound ([(NH3)5RuNCRu(CN)5]-; RuRu) in aqueous solution is reported for the first time with sufficient time resolution and spectral coverage to monitor the complete spectral dynamics. From the dynamic absorption spectrum, constructed from the pump-probe data obtained over a wide range of probe wavelengths (570-1300 nm), accurate measurement of the electron transfer (ET) time (1/kET) have been obtained by a global analysis of the data. The data have lead to new insights on the role of solvent and solute nuclear motions in the ET process. Additionally, pump-probe experiments with variable wavelength pump pulses have revealed the presence of a pump wavelength-dependent dynamic feature at early time, which has been assigned to stimulated emission from nonequilibrium excited states.

published proceedings


author list (cited authors)

  • Son, D. H., Kambhampati, P., Kee, T. W., & Barbara, P. F.

citation count

  • 64

complete list of authors

  • Son, DH||Kambhampati, P||Kee, TW||Barbara, PF

publication date

  • May 2002