東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Coherence and chirality in energy tr...

Singh, Ved Prakash.

FindBook

Google Book

Amazon

博客來

Coherence and chirality in energy transfer dynamics of light harvesting antenna complexes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Coherence and chirality in energy transfer dynamics of light harvesting antenna complexes./
作者:	Singh, Ved Prakash.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	141 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.
Contained By:	Dissertation Abstracts International77-12B(E).
標題:	Biophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10129486
ISBN:	9781339873770

Coherence and chirality in energy transfer dynamics of light harvesting antenna complexes.
Singh, Ved Prakash.

Coherence and chirality in energy transfer dynamics of light harvesting antenna complexes. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 141 p.

Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.

Thesis (Ph.D.)--The University of Chicago, 2016.

This item is not available from ProQuest Dissertations & Theses.

Photosynthetic antenna complexes harvest sunlight and efficiently transport energy to the reaction center where charge separation powers biochemical energy storage. Under low light conditions, the quantum efficiency of light harvesting complexes is almost unity. The high quantum efficiency of photosynthetic antenna complexes has attracted immense theoretical and experimental studies. It is understood that energy transfer is an incoherent process. However, it was hypothesized the energy transfer can start as a coherent process before it becomes completely stochastic in nature. Recent discovery of existence of long lived quantum coherence during energy transfer has sparked the discussion on the role of quantum coherence on the energy transfer efficiency. Early works assigned observed coherences to electronic states, and theoretical studies showed that electronic coherences could affect energy transfer efficiency--- by either enhancing or suppressing transfer. However, the nature of coherences has been fiercely debated as coherences only report the energy gap between the states that generate coherence signals. Recent works have suggested that either the coherences observed in photosynthetic antenna complexes arise from vibrational wave packets on the ground state or, alternatively, coherences arise from mixed electronic and vibrational states. Understanding origin of coherences is important for designing molecules for efficient light harvesting.

ISBN: 9781339873770Subjects--Topical Terms:

518360
Biophysics.

Coherence and chirality in energy transfer dynamics of light harvesting antenna complexes.
LDR:03332nmm a2200313 4500 001 2125712
005 20171115071135.5
008 180830s2016 ||||||||||||||||| ||eng d
020 $a 9781339873770
035 $a (MiAaPQ)AAI10129486
035 $a AAI10129486
040 $a MiAaPQ $c MiAaPQ
100 1 $a Singh, Ved Prakash. $3 3287792
245 1 0 $a Coherence and chirality in energy transfer dynamics of light harvesting antenna complexes.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2016
300 $a 141 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.
500 $a Adviser: Gregory S. Engel.
502 $a Thesis (Ph.D.)--The University of Chicago, 2016.
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a Photosynthetic antenna complexes harvest sunlight and efficiently transport energy to the reaction center where charge separation powers biochemical energy storage. Under low light conditions, the quantum efficiency of light harvesting complexes is almost unity. The high quantum efficiency of photosynthetic antenna complexes has attracted immense theoretical and experimental studies. It is understood that energy transfer is an incoherent process. However, it was hypothesized the energy transfer can start as a coherent process before it becomes completely stochastic in nature. Recent discovery of existence of long lived quantum coherence during energy transfer has sparked the discussion on the role of quantum coherence on the energy transfer efficiency. Early works assigned observed coherences to electronic states, and theoretical studies showed that electronic coherences could affect energy transfer efficiency--- by either enhancing or suppressing transfer. However, the nature of coherences has been fiercely debated as coherences only report the energy gap between the states that generate coherence signals. Recent works have suggested that either the coherences observed in photosynthetic antenna complexes arise from vibrational wave packets on the ground state or, alternatively, coherences arise from mixed electronic and vibrational states. Understanding origin of coherences is important for designing molecules for efficient light harvesting.
520 $a The work presented here enumerates various technical, experimental and theoretical advances made over the past few years to understand the nature of coherent energy transfer dynamics in photosynthetic antenna complexes. The experimental and theoretical advances in interpreting 3rd order spectroscopic signals made GRAPES a powerful spectrometer for performing 3rd order non-linear electronic spectroscopic. 3rd order non-linear spectroscopy provides insight into correlations responsible for energy transfer and long lived coherence. The ability to further control each light-matter interaction by altering the state of polarization of light has been used to decipher the nature of coherence during energy transfer. The control over light-matter interaction has been used to explore the chiral dynamics of photosynthetic antenna complexes.
590 $a School code: 0330.
650 4 $a Biophysics. $3 518360
650 4 $a Physical chemistry. $3 1981412
690 $a 0786
690 $a 0494
710 2 $a The University of Chicago. $b Chemistry. $3 1675066
773 0 $t Dissertation Abstracts International $g 77-12B(E).
790 $a 0330
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10129486