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Quantum biology: Elucidating design ...

Pelzer, Kenley March Barrett.

Quantum biology: Elucidating design principles from photosynthesis.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Quantum biology: Elucidating design principles from photosynthesis.
作者:	Pelzer, Kenley March Barrett.
面頁冊數:	138 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.
附註:	Advisers: Gregory Engel; Stephen Gray.
Contained By:	Dissertation Abstracts International76-02B(E).
標題:	Physical chemistry.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3638670
ISBN:	9781321224849

Quantum biology: Elucidating design principles from photosynthesis.
Pelzer, Kenley March Barrett.

Quantum biology: Elucidating design principles from photosynthesis. - 138 p.

Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.

Thesis (Ph.D.)--The University of Chicago, 2014.

This item must not be sold to any third party vendors.

Light-harvesting complexes in photosynthetic organisms are known to transfer excitonic energy with extremely high efficiency, but the mechanisms behind this high efficiency are not fully understood. Spectroscopic data on the Fenna-Matthews-Olson (FMO) complex, a light-harvesting complex in green sulfur bacteria, suggests that quantum mechanical effects may play an important role in the energy transfer process. In recent years a large body of research has supported the argument that quantum mechanical effects can and do play a role in photosynthetic energy transfer, but both experimental and theoretical work faces the challenge of understanding the role of FMO's noisy biological environment in quantum transport. It is certain that excitons in FMO are frequently perturbed by phonons in the environment, but much remains to be understood about the role of these perturbations in the transport process.

ISBN: 9781321224849Subjects--Topical Terms:

708580
Physical chemistry.

Quantum biology: Elucidating design principles from photosynthesis.
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500 $a Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.
500 $a Advisers: Gregory Engel; Stephen Gray.
502 $a Thesis (Ph.D.)--The University of Chicago, 2014.
506 $a This item must not be sold to any third party vendors.
520 $a Light-harvesting complexes in photosynthetic organisms are known to transfer excitonic energy with extremely high efficiency, but the mechanisms behind this high efficiency are not fully understood. Spectroscopic data on the Fenna-Matthews-Olson (FMO) complex, a light-harvesting complex in green sulfur bacteria, suggests that quantum mechanical effects may play an important role in the energy transfer process. In recent years a large body of research has supported the argument that quantum mechanical effects can and do play a role in photosynthetic energy transfer, but both experimental and theoretical work faces the challenge of understanding the role of FMO's noisy biological environment in quantum transport. It is certain that excitons in FMO are frequently perturbed by phonons in the environment, but much remains to be understood about the role of these perturbations in the transport process.
520 $a This thesis aims to contribute to this discussion in two ways. First, we present work in which we apply theoretical models to address questions regarding the interpretation of spectroscopic results. The accuracy of spectroscopy in measuring timescales relevant to quantum transport and the relevance of spectroscopic results to excitation by incoherent light are addressed. Second, we present work in which we simulate exciton transport using various representations of the phonon bath. We explore the effect of spatial correlations in the phonon bath, and test a variety of possible bath models in a Keldysh Green's function model of transport under incoherent light. We demonstrate in many ways that environmental noise plays a crucial role in shaping the process of excitonic energy transfer.
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