Laser Chemistry

Laser Chemistry / 1999 / Article
Special Issue

Proceedings of the Eighth Conference on Time-Resolved Vibrational Spectroscopy

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Open Access

Volume 19 |Article ID 16293 | 5 pages | https://doi.org/10.1155/1999/16293

Electronic and Vibrational Coherence in Photosynthetic Cofactors: Comparison of Solutions and Proteins

Received07 Apr 1997

Abstract

The interaction between photosynthetic cofactors and the surrounding bath or protein environment is addressed via experimental measurements of the optical coherence responses from bacteriochlorophylla (Bchla) chromophores within the photosynthetic reaction center (RC) of Rhodobacter sphaeroides and solutions of Bchla monomers in THF and pyridine. The results indicate that both the spectrum of fluctuations and chromophore bath coupling strengths vary between solutions and protein. In particular, the protein environment yields faster dephasing, faster spectral diffusion, and significantly more inhomogeneity than solutions.

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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