Kosumi, D., Nishiguchi, T., Amao, Y., Cogdell, R.J. and Hashimoto, H. (2018) Singlet and triplet excited states dynamics of photosynthetic pigment chlorophyll a investigated by sub-nanosecond pump-probe spectroscopy. Journal of Photochemistry and Photobiology A: Chemistry, 358, pp. 374-378. (doi: 10.1016/j.jphotochem.2017.09.046)
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Abstract
Singlet and triplet excited states dynamics of the photosynthetic pigment chlorophyll a in various solvents have been investigated by sub-ns pump-probe spectroscopic measurements with a sub-ns time resolution and a temporal window up to 400 μs. The singlet and triplet lifetimes of chlorophyll a were determined respectively to be 5.2–7.0 ns and 1.2–12 μs, depending on solvents. On a basis of a global analysis of time-resolved spectroscopic data, we estimated an yield of the intersystem crossing from the singlet to triplet excited states chlorophyll a to be about 30% depending not on surrounding environments. The value is much lower than the previously reported values.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Cogdell, Professor Richard |
| Authors: | Kosumi, D., Nishiguchi, T., Amao, Y., Cogdell, R.J., and Hashimoto, H. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Molecular Biosciences |
| Journal Name: | Journal of Photochemistry and Photobiology A: Chemistry |
| Publisher: | Elsevier |
| ISSN: | 1010-6030 |
| ISSN (Online): | 1873-2666 |
| Published Online: | 28 September 2017 |
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