Spectroscopic properties of the S1 state of linear carotenoids after excess energy excitation

Kuznetsova, V., Southall, J. , Cogdell, R. J. , Fuciman, M. and Polívka, T. (2017) Spectroscopic properties of the S1 state of linear carotenoids after excess energy excitation. Chemical Physics Letters, 683, pp. 448-453. (doi: 10.1016/j.cplett.2017.03.009)

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Properties of the S1 state of neurosporene, spheroidene and lycopene were studied after excess energy excitation in the S2 state. Excitation of carotenoids into higher vibronic levels of the S2 state generates excess vibrational energy in the S1 state. The vibrationally hot S1 state relaxes faster when carotenoid is excited into the S2 state with excess energy, but the S1 lifetime remains constant regardless of which vibronic level of the S2 state is excited. The S∗ signal depends on excitation energy only for spheroidene, which is likely due to asymmetry of the molecule, facilitating conformations responsible for the S∗ signal.

Item Type:Articles
Additional Information:Research in Czech Republic was supported was supported by the Czech Science Foundation grant 16-10417S. Work at the University of Glasgow University was supported as part of the Photosynthetic Antenna Research Center (PARC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award #DE-SC0001035.
Glasgow Author(s) Enlighten ID:Cogdell, Professor Richard and Southall, Mrs June
Authors: Kuznetsova, V., Southall, J., Cogdell, R. J., Fuciman, M., and Polívka, T.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
Journal Name:Chemical Physics Letters
ISSN (Online):1873-4448
Published Online:06 March 2017

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