Artículo
Relaxation dynamics of tryptophan in water: A UV fluorescence up-conversion and molecular dynamics study
Bräm, O.; Ajdarzadeh Oskoue, A.; Tortschanoff, A.; Van Mourik, F.; Madrid, Marcos Andres
; Echave, Julian
; Cannizzo, A.; Chergui, M.
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
07/2010
Editorial:
American Chemical Society
Revista:
Journal of Physical Chemistry A
ISSN:
1089-5639
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We report on an ultrafast experimental and simulations study of the early relaxation events of photoexcited tryptophan in water. Experimentally, we used fluorescence up-conversion in both polychromatic and single wavelength detection modes in the 300480 nm range with polarization dependence. We report on the time evolution of the Stokes shift, bandwidth, and anisotropy from tens of femtoseconds to picoseconds. These observables contain signatures of the simultaneous occurrence of intramolecular and solventmolecule interactions, which we disentangle with the help of nonequilibrium molecular dynamics simulations. We also observe a breakdown of the linear response approximation to describe our results.
Palabras clave:
Dinamica
,
Ultrarrapida
,
Espectroscopia
,
Simulacion
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Bräm, O.; Ajdarzadeh Oskoue, A.; Tortschanoff, A.; Van Mourik, F.; Madrid, Marcos Andres; et al.; Relaxation dynamics of tryptophan in water: A UV fluorescence up-conversion and molecular dynamics study; American Chemical Society; Journal of Physical Chemistry A; 114; 34; 7-2010; 9034-9042
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