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dc.creatorMontero, Raulen_US
dc.creatorConde, Alvaro Peraltaen_US
dc.creatorOvejas, Virginiaen_US
dc.creatorCastano, Fernandoen_US
dc.creatorLongarte, Asieren_US
dc.date.accessioned2012-07-09T19:21:12Z
dc.date.available2012-07-09T19:21:12Z
dc.date.issued2012en_US
dc.identifier2012-TB-05en_US
dc.identifier.urihttp://hdl.handle.net/1811/52349
dc.descriptionAuthor Institution: Departamento de Quimica Fisica, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco (UPV-EHU), Ap. 644, E-48080 Bilbao, Spainen_US
dc.description.abstractPyrrole is a simple aromatic molecule with relevantchromophoric properties in biology. Although its apparent simplicity, it shows a complicated dynamics after excitation in the near part of the UV absorption spectrum, which results from the interplay between the bright $\pi\pi^*$ and the dark dissociative $\pi\sigma^*$ electronic transitions., nderline{\textbf{312}}, 1637-1640, 2006.} Herein, we present a time resolved study with ultrafast resolution on the relaxation dynamics of isolated pyrrole, after excitation in the 265-217 nm range. Two lifetimes of 19 and 15 fs, which are associated with the internal conversion from the bright $^{1}$B$_{2}$ $\pi\pi^*$ state and the propagation of the wavepacket on the $\pi\sigma^*$ state, respectively, are found in the studied energy interval. The work also explores the consequences of non resonant adiabatic excitation of the system when broadband femtosecond pulses are employed to prepare the molecule in the targeted electronic states, revealing the key implication of this type of coherent phenomena. The collected data reveal that the bright $^{1}$B$_{2}$ $\pi\pi^*$ state is adiabatically populated at excitation wavelengths far away from resonance, providing an efficient way to reach the $\pi\sigma^*$ state. The recorded transients are fit employing a coherent model that provides a comprehensive view of the dynamical processes pyrrole undergoes after excitation by ultrashort light pulses.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titleFEMTOSECOND TIMESCALE EVOLUTION OF PYRROLE ELECTRONIC EXCITATIONen_US
dc.typeArticleen_US
dc.typeImageen_US
dc.typePresentationen_US


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