Heterogeneous excitation dynamics revealed by two-dimensional optical spectroscopy
Article Abstract:
The capacity of optical two-dimensional spectroscopy to recover ultrafast heterogeneous dynamics of closely spaced delocalized exciton states from a molecular exciton manifold characterized by a single absorption band is demonstrated. The exciton relaxation between the exciton states and nuclear-motion-induced exchange-narrowed energy fluctuations of individual delocalized exciton states is found to lead to distinctively different evolution of the absolute two-dimensional spectrum and hence their relative influences distinguished.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Three-pulse photon echo measurements on the accessory pigments in the reaction center of Rhodobacter sphaeroides
Article Abstract:
A study was conducted to carry out three-pulse photon echo measurements on the accessory pigments at the reaction center of Rhodobacter sphaeroides. The echo peak shift from zero represented by the population time was associated with the time correlation function of the electronic transition frequency. Experimental results indicated differences in the protein dynamics of the blue and red sides of the absorption band that could be correlated with variations in the protein environment.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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