TY - JOUR
T1 - Analysis of the temperature dependence of femtosecond excited state dynamics of bacteriorhodopsin by spin-boson model
AU - Akiyama, R.
AU - Yoshimori, A.
AU - Kakitani, T.
AU - Imamoto, Y.
AU - Shichida, Y.
AU - Hatano, Y.
N1 - Funding Information:
This work was supported in part by a Grant-in-Aid for Scientific Research from the Japanese Ministry of Education, Science and Culture, and JSPS. The computations were done by using FACOM VP 2600 in the Computation Center of Nagoya University.
PY - 1996/6
Y1 - 1996/6
N2 - 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.
AB - 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.
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U2 - 10.1016/0009-2614(96)00434-4
DO - 10.1016/0009-2614(96)00434-4
M3 - Article
AN - SCOPUS:0030167117
VL - 256
SP - 165
EP - 171
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-2
ER -