Braem, OlivierCannizzo, AndreaChergui, Majed2012-06-082012-06-082012-06-08201210.1039/c2cp40590chttps://infoscience.epfl.ch/handle/20.500.14299/81423WOS:000304102200004Time-resolved fluorescence spectra from the RuN719 dye exhibit very short lifetimes (<30 fs) in solutions, on non-injecting substrates and on injecting ones. This reveals <10 fs intramolecular energy redistribution competing with the injection. We conclude that injection proceeds on a sub-10 fs time scale from non-thermalized levels of the dye.Photoinduced Electron-TransferNanocrystalline Tio2 FilmsTitanium-Dioxide FilmsExcited-State RelaxationFemtosecond FluorescenceTransient AbsorptionCharge-TransferThin-FilmsAb-InitioDynamicstext::journal::journal article::research article