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Donatas Zigmantas. Portrait.

Donatas Zigmantas

Professor

Donatas Zigmantas. Portrait.

Dynamics of vibrational relaxation in the S-1 state of carotenoids having 11 conjugated C=C bonds

Author

  • Helena Billsten
  • Donatas Zigmantas
  • Villy Sundström
  • Tomas Polivka

Summary, in English

Transient absorption spectra and kinetics in the 470-650 nm region were recorded for lycopene, P-carotene and zeaxanthin, all carotenoids with 11 conjugated double bonds, in two solvents with different polarity. Analysis of the red wing of the carotenoid SI-S, transition revealed presence of a pronounced shoulder at early delay times. The kinetics recorded at this low-energy shoulder of the SI-S, transition yields an additional decay component of 500-800 fs in addition to the main S, decay. This dynamics is ascribed to a vibrational relaxation in the S, state of the carotenoids. (C) 2002 Elsevier Science B.V. All rights reserved.

Department/s

  • Chemical Physics

Publishing year

2002

Language

English

Pages

465-470

Publication/Series

Chemical Physics Letters

Volume

355

Issue

5-6

Document type

Journal article

Publisher

Elsevier

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0009-2614