Abstract
We calculate the effects of relatively strong electric fields, corresponding to typical values for the fields inside glasses and proteins, on the spectroscopic properties of a simple two-level molecule. Disorder in the electric field strength is employed as a physical source for inhomogeneous broadening. A striking result is that a Gaussian probability distribution for the field over the ensemble does not give rise to a Gaussian spectral line shape. The results are used to describe the absorption spectra of the B800 band of the B800-850 light-harvesting complex of photosynthetic purple bacteria.
Original language | English |
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Pages (from-to) | 9715-9719 |
Journal | Journal of Physical Chemistry B |
Volume | 105 |
DOIs | |
Publication status | Published - 2001 |