Dark excited states of carotenoid in light harvesting complex probing with femtosecond stimulated Raman spectroscopy
1 Dep. of Physics, Graduate School of Science, Tohoku University, Japan
2 JST, CREST, Japan
3 Dep. of Life and Materials Engineering, Nagoya Institute of Technology, Japan.
4 Dep. of Physics, Graduate School of Science, Osaka City University, Japan.
5 OCARINA, Osaka City University, Japan.
Vibrational dynamics of dark excited states in carotenoids have been investigated using tunable Raman pump pulses. The S1 state has same vibrational dynamics in light-harvesting complex (LH1) and solution. The S* state in LH1 has similar vibrational modes with the triplet state of carotenoid. However, the so-called S* state in solution does not have the modes and is concluded to be different from the S* state in LH1.
© Owned by the authors, published by EDP Sciences, 2013
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