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 language | English |
|---|---|
| Pages (from-to) | 14183-14190 |
| Number of pages | 8 |
| Journal | Journal of Physical Chemistry B |
| Volume | 117 |
| Issue number | 46 |
| DOIs | |
| Publication status | Published - Nov 21 2013 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Materials Chemistry
- Surfaces, Coatings and Films
Cite this
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 journal › Article
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TY - JOUR
T1 - Ultrafast energy transfer and excited state coupling in an artificial photosynthetic antenna
AU - Maiuri, M.
AU - Snellenburg, J. J.
AU - Van Stokkum, I. H M
AU - Pillai, S.
AU - Wongcarter, K.
AU - Gust, John Devens
AU - Moore, Thomas A
AU - Moore, Ana L
AU - Van Grondelle, R.
AU - Cerullo, G.
AU - Polli, D.
PY - 2013/11/21
Y1 - 2013/11/21
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84888581579&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84888581579&partnerID=8YFLogxK
U2 - 10.1021/jp401073w
DO - 10.1021/jp401073w
M3 - Article
VL - 117
SP - 14183
EP - 14190
JO - Journal of Physical Chemistry B Materials
JF - Journal of Physical Chemistry B Materials
SN - 1520-6106
IS - 46
ER -