2011 Fiscal Year Final Research Report
Energy flow in the light harvesting complex revealed by pre-excitation of the energy accepter
| Project/Area Number |
22740271
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Biophysics/Chemical physics
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | 超高速分光 / 光合成 / エネルギー移動 |
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| Research Abstract |
We performed femtosecond transient absorption spectroscopy combined with pre-excitation of bacteriochlorophyll(BChl) in the LH1complex from Rhodospirillum rubrum S1. We observed that the energy flow from S_1to S* occurs only when nearby BChl is excited into Q_y. In addition, we observed an increase in triplet formation as the S* population increased, indicating that S* is an electronic excited state that is the precursor to triplet formation.
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