Ultrafast energy transfer and excited state coupling in an artificial photosynthetic antenna

M. Maiuri, J. J. Snellenburg, I. H M Van Stokkum, S. Pillai, K. Wongcarter, John Devens Gust, Thomas A Moore, Ana L Moore, R. Van Grondelle, G. Cerullo, D. Polli

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We have studied the energy transfer dynamics in an artificial light-harvesting dyad composed of a phthalocyanine (Pc) covalently linked to a carotenoid (Car). The combination of high temporal resolution transient absorption spectroscopy with global and target analysis allowed us to quantify the efficiency of the energy transfer from the S2 excited state of the Car to the Pc at 37%, close to values observed in some natural light-harvesting complexes. In addition, following selective excitation of the Pc, we have identified the spectral signatures of the S1 excited state of the Car which appear within the ≈30 fs time resolution of our measurement. This strongly indicates excited state coupling between the S 1 state of Car and the Qx state of Pc, with important implications for the regulation of photosynthetic activity.

Original languageEnglish
Pages (from-to)14183-14190
Number of pages8
JournalJournal of Physical Chemistry B
Volume117
Issue number46
DOIs
Publication statusPublished - Nov 21 2013

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carotenoids
Carotenoids
Excited states
Energy transfer
antennas
energy transfer
Antennas
excitation
spectral signatures
temporal resolution
Absorption spectroscopy
absorption spectroscopy
phthalocyanine
high resolution

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

Maiuri, M., Snellenburg, J. J., Van Stokkum, I. H. M., Pillai, S., Wongcarter, K., Gust, J. D., ... Polli, D. (2013). Ultrafast energy transfer and excited state coupling in an artificial photosynthetic antenna. Journal of Physical Chemistry B, 117(46), 14183-14190. https://doi.org/10.1021/jp401073w

Ultrafast energy transfer and excited state coupling in an artificial photosynthetic antenna. / Maiuri, M.; Snellenburg, J. J.; Van Stokkum, I. H M; Pillai, S.; Wongcarter, K.; Gust, John Devens; Moore, Thomas A; Moore, Ana L; Van Grondelle, R.; Cerullo, G.; Polli, D.

In: Journal of Physical Chemistry B, Vol. 117, No. 46, 21.11.2013, p. 14183-14190.

Research output: Contribution to journalArticle

Maiuri, M, Snellenburg, JJ, Van Stokkum, IHM, Pillai, S, Wongcarter, K, Gust, JD, Moore, TA, Moore, AL, Van Grondelle, R, Cerullo, G & Polli, D 2013, 'Ultrafast energy transfer and excited state coupling in an artificial photosynthetic antenna', Journal of Physical Chemistry B, vol. 117, no. 46, pp. 14183-14190. https://doi.org/10.1021/jp401073w
Maiuri M, Snellenburg JJ, Van Stokkum IHM, Pillai S, Wongcarter K, Gust JD et al. Ultrafast energy transfer and excited state coupling in an artificial photosynthetic antenna. Journal of Physical Chemistry B. 2013 Nov 21;117(46):14183-14190. https://doi.org/10.1021/jp401073w
Maiuri, M. ; Snellenburg, J. J. ; Van Stokkum, I. H M ; Pillai, S. ; Wongcarter, K. ; Gust, John Devens ; Moore, Thomas A ; Moore, Ana L ; Van Grondelle, R. ; Cerullo, G. ; Polli, D. / Ultrafast energy transfer and excited state coupling in an artificial photosynthetic antenna. In: Journal of Physical Chemistry B. 2013 ; Vol. 117, No. 46. pp. 14183-14190.
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