This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/84371
Description
Title
Theoretical Studies of Quantum Dynamics
Author(s)
Sim, Eunji
Issue Date
1997
Doctoral Committee Chair(s)
Makri, Nancy
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, General
Language
eng
Abstract
Using the FPF method, we have carried out accurate path integral simulations of the primary charge separation in bacterial photosynthesis. The process is modeled in terms of three coupled electronic states corresponding to the photoexcited special pair, the reduced accessory bacteriochlorophyll and the reduced bacteriopheophytin of the L branch which interact with a dissipative medium of protein and solvent degrees of freedom. We found that a free energy of the reduced bacteriochlorophyll state about 400 cm$\sp{-1}$ lower than that of the excited special pair, which is associated with a two-step electron transfer mechanism, yields state populations in agreement with experimental results on wild-type and modified reaction centers including the observed temperature dependence. The results are found to be rather stable with respect to reasonable changes of the medium spectral density and the specifics of the nonequilibrium configuration of the photoexcited donor state.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
