Excited State Concerted Proton Electron Transfer Mechanism (CPET)

M. C. CAPELLO; G. A. PINO; M. BROQUIER; C. DEDONDER-LARDEUX; C. JOUVET

Le Diablerets

Congreso; Isolated Biomolecules and Biomolecular Interactions (IBBI 2012); 2012

In this work, we present a combined study of the excited state dynamics of the 7AI-PhOH complex in the gas phase by combination of nanosecond REMPI and LIF spectroscopy with time resolved pump-probe picosecond spectroscopy and quantum chemistry calculations. The results show an ultrafast excited state dynamics upon excitation of the 7AI moiety to the first S1 state of pp* character, that quenches the fluorescence from both tautomers. The ultrafast excited state dynamics is ascribed to CPET.