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Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins

Author(s): Scholes, Gregory D.; Turner, Daniel B.; Turner, Daniel B.

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Abstract: We present broadband two-dimensional electronic spectra of a lightharvesting protein from photosynthetic algae. Analysis of the spectra show that the amplitude of the main cross peak oscillates as a function of the waiting time period. Both electronic coupling and intramolecular vibrational modes, and their mixture, can lead to such oscillations. Using predictions based on models of four-level systems, we describe ways to distinguish electronic from vibrational contributions to the coherence and find that both types of coupling contribute to the measured dynamics. © Owned by the authors, published by EDP Sciences, 2013
Publication Date: 2013
Electronic Publication Date: 13-Mar-2013
Citation: Turner, Daniel B., Scholes, Gregory D. (2013). Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins. EPJ Web of Conferences, 41 (08004 - 08004. doi:10.1051/epjconf/20134108004
DOI: doi:10.1051/epjconf/20134108004
EISSN: 2100-014X
Pages: 41:08004-1 - 08004-3
Type of Material: Journal Article
Journal/Proceeding Title: EPJ Web of Conferences
Version: Final published version. This is an open access article.
Notes: EPJ Web of Conferences. Volume 41, 2013, Article number 08004. 18th International Conference on Ultrafast Phenomena, UP 2012; Lausanne; Switzerland; 8 July 2012 through 13 July 2012.

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