A simple artificial light harvesting dyad as a mimic of nonphotochemical quenching in green plants

Rudi Berera, Ivo H M van Stokkum, Christian Herrero, Mikas Vengris, Gerdenis Kodis, Rodrigo E. Palacios, Herbert van Amerongen, Rienk van Grondelle, Devens Gust, Thomas Moore, Ana Moore, John T M Kennis

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A carotenoid can efficiently quench the Qy energy of phthalocyanine molecule. Target analysis provides evidence for the pivotal role of the carotenoid excited state in the quenching by showing that the spectrum of the quenching species resembles the carotenoid S1 spectrum. However, energy transfer involving the carotenoid S1 state alone cannot be solely responsible for the quenching because the process is solvent polarity dependent. This chapter performs a transient absorption measurement on a model carotenoid with 10 double bonds to gain further insights into the process. Solvent polarity-dependent shape changes that cannot be ascribed to the Sl state are detected. Similar changes are reported for several substituted carotenoids and assigned to an intramolecular charge transfer state. Results show that carotenoids can quench tetrapyrrole singlet excited states by means of energy transfer to optically forbidden carotenoid states. Expanding the conjugated system of the carotenoid by one double bond turns the carotenoid from a nonquencher into a strong quencher.

Original languageEnglish (US)
Title of host publicationFemtochemistry VII
PublisherElsevier
Pages387-390
Number of pages4
ISBN (Print)9780444528216
DOIs
StatePublished - 2006

Fingerprint

Carotenoids
Quenching
Excited states
Energy transfer
Tetrapyrroles
Charge transfer
Molecules

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Berera, R., van Stokkum, I. H. M., Herrero, C., Vengris, M., Kodis, G., Palacios, R. E., ... Kennis, J. T. M. (2006). A simple artificial light harvesting dyad as a mimic of nonphotochemical quenching in green plants. In Femtochemistry VII (pp. 387-390). Elsevier. https://doi.org/10.1016/B978-044452821-6/50055-1

A simple artificial light harvesting dyad as a mimic of nonphotochemical quenching in green plants. / Berera, Rudi; van Stokkum, Ivo H M; Herrero, Christian; Vengris, Mikas; Kodis, Gerdenis; Palacios, Rodrigo E.; Amerongen, Herbert van; Grondelle, Rienk van; Gust, Devens; Moore, Thomas; Moore, Ana; Kennis, John T M.

Femtochemistry VII. Elsevier, 2006. p. 387-390.

Research output: Chapter in Book/Report/Conference proceedingChapter

Berera, R, van Stokkum, IHM, Herrero, C, Vengris, M, Kodis, G, Palacios, RE, Amerongen, HV, Grondelle, RV, Gust, D, Moore, T, Moore, A & Kennis, JTM 2006, A simple artificial light harvesting dyad as a mimic of nonphotochemical quenching in green plants. in Femtochemistry VII. Elsevier, pp. 387-390. https://doi.org/10.1016/B978-044452821-6/50055-1
Berera R, van Stokkum IHM, Herrero C, Vengris M, Kodis G, Palacios RE et al. A simple artificial light harvesting dyad as a mimic of nonphotochemical quenching in green plants. In Femtochemistry VII. Elsevier. 2006. p. 387-390 https://doi.org/10.1016/B978-044452821-6/50055-1
Berera, Rudi ; van Stokkum, Ivo H M ; Herrero, Christian ; Vengris, Mikas ; Kodis, Gerdenis ; Palacios, Rodrigo E. ; Amerongen, Herbert van ; Grondelle, Rienk van ; Gust, Devens ; Moore, Thomas ; Moore, Ana ; Kennis, John T M. / A simple artificial light harvesting dyad as a mimic of nonphotochemical quenching in green plants. Femtochemistry VII. Elsevier, 2006. pp. 387-390
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