Analysis of the temperature dependence of femtosecond excited state dynamics of bacteriorhodopsin by spin-boson model

Ryo Akiyama, A. Yoshimori, T. Kakitani, Y. Imamoto, Y. Shichida, Y. Hatano

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The spin-boson model was applied to analyze the temperature dependence of excited state dynamics for the cis - trans photoisomerization of the chromophore in bacteriorhodopsin which was obtained by the Fourier transform of the optical absorption spectrum. The results indicate that the model is valid in the short time region less than about 30 fs and that the excited state dynamics in the time region larger than 30 fs is dominated by the non-harmonic slow vibrational motion, which is temperature independent. It is suggested that this specific vibrational motions might reflect the ultrafast cis - trans isomerization of the chromophore as well as conformation change of the protein environment.

Original languageEnglish
Pages (from-to)165-171
Number of pages7
JournalChemical Physics Letters
Volume256
Issue number1-2
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

Fingerprint

Bacteriorhodopsins
Bosons
Chromophores
Excited states
chromophores
bosons
Photoisomerization
temperature dependence
Isomerization
Light absorption
isomerization
excitation
Conformations
optical spectrum
Absorption spectra
Fourier transforms
optical absorption
proteins
absorption spectra
Temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Analysis of the temperature dependence of femtosecond excited state dynamics of bacteriorhodopsin by spin-boson model. / Akiyama, Ryo; Yoshimori, A.; Kakitani, T.; Imamoto, Y.; Shichida, Y.; Hatano, Y.

In: Chemical Physics Letters, Vol. 256, No. 1-2, 01.01.1996, p. 165-171.

Research output: Contribution to journalArticle

Akiyama, Ryo ; Yoshimori, A. ; Kakitani, T. ; Imamoto, Y. ; Shichida, Y. ; Hatano, Y. / Analysis of the temperature dependence of femtosecond excited state dynamics of bacteriorhodopsin by spin-boson model. In: Chemical Physics Letters. 1996 ; Vol. 256, No. 1-2. pp. 165-171.
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