The dynamics of the S1 excited states of carotenoids

Harry A. Frank, Roya Farhoosh, Ronald Gebhard, Johan Lugtenburg, David Gosztola, Michael R Wasielewski

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Transient absorption spectroscopy was used to measure the S1 dynamics of four all-trans-carotenoids: 3,4,7,8-tetrahydrospheroidene, 3,4,5,6-tetrahydrospheroidene, 3,4-dihydrospheroidene and spheroidene. After excitation into the S2 state and subsequent relaxation to the S1 state, the S1 → Sn electronic absorption bands in the region 460-520 nm were probed and observed to decay with single-exponential kinetics: τ = 407 ± 23 ps for 3,4,7,8-tetrahydrospheroidene, 85 ± 5 ps for 3,4,5,6-tetrahydrospheroidene, 25.4 ± 0.9 ps for 3,4-dihydrospheroidene and 8.7 ± 0.1 ps for spheroidene. These data are discussed in three contexts: (1) as a test of the adherence of carotenoids to the energy gap law; (2) as a means of determining the S1 state energy of spheroidene, which appears to be at 14100 cm-1; and (3) in terms of the constraints placed on the efficiencies of carotenoid-to-chlorophyll energy transfer in photosynthetic systems.

Original languageEnglish
Pages (from-to)88-92
Number of pages5
JournalChemical Physics Letters
Volume207
Issue number1
DOIs
Publication statusPublished - May 14 1993

Fingerprint

carotenoids
Carotenoids
Excited states
excitation
chlorophylls
Chlorophyll
Absorption spectroscopy
Energy transfer
Electron energy levels
Absorption spectra
absorption spectroscopy
Energy gap
energy transfer
absorption spectra
Kinetics
kinetics
decay
electronics
spheroidene
energy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Frank, H. A., Farhoosh, R., Gebhard, R., Lugtenburg, J., Gosztola, D., & Wasielewski, M. R. (1993). The dynamics of the S1 excited states of carotenoids. Chemical Physics Letters, 207(1), 88-92. https://doi.org/10.1016/0009-2614(93)85016-H

The dynamics of the S1 excited states of carotenoids. / Frank, Harry A.; Farhoosh, Roya; Gebhard, Ronald; Lugtenburg, Johan; Gosztola, David; Wasielewski, Michael R.

In: Chemical Physics Letters, Vol. 207, No. 1, 14.05.1993, p. 88-92.

Research output: Contribution to journalArticle

Frank, HA, Farhoosh, R, Gebhard, R, Lugtenburg, J, Gosztola, D & Wasielewski, MR 1993, 'The dynamics of the S1 excited states of carotenoids', Chemical Physics Letters, vol. 207, no. 1, pp. 88-92. https://doi.org/10.1016/0009-2614(93)85016-H
Frank, Harry A. ; Farhoosh, Roya ; Gebhard, Ronald ; Lugtenburg, Johan ; Gosztola, David ; Wasielewski, Michael R. / The dynamics of the S1 excited states of carotenoids. In: Chemical Physics Letters. 1993 ; Vol. 207, No. 1. pp. 88-92.
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