Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins
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, a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-03-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20134108004 |
| _version_ | 1818907471891136512 |
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| author | Scholes Gregory D. Turner Daniel B. |
| author_facet | Scholes Gregory D. Turner Daniel B. |
| author_sort | Scholes Gregory D. |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-19T21:55:39Z |
| format | Article |
| id | doaj.art-69a56164a7ff49f08c1640725ae83e28 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T21:55:39Z |
| publishDate | 2013-03-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-69a56164a7ff49f08c1640725ae83e282022-12-21T20:04:17ZengEDP SciencesEPJ Web of Conferences2100-014X2013-03-01410800410.1051/epjconf/20134108004Electronic and Vibrational Coherences in Algal Light-Harvesting ProteinsScholes Gregory D.Turner Daniel B.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.http://dx.doi.org/10.1051/epjconf/20134108004 |
| spellingShingle | Scholes Gregory D. Turner Daniel B. Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins EPJ Web of Conferences |
| title | Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins |
| title_full | Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins |
| title_fullStr | Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins |
| title_full_unstemmed | Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins |
| title_short | Electronic and Vibrational Coherences in Algal Light-Harvesting Proteins |
| title_sort | electronic and vibrational coherences in algal light harvesting proteins |
| url | http://dx.doi.org/10.1051/epjconf/20134108004 |
| work_keys_str_mv | AT scholesgregoryd electronicandvibrationalcoherencesinalgallightharvestingproteins AT turnerdanielb electronicandvibrationalcoherencesinalgallightharvestingproteins |