Two-dimensional electronic spectroscopy reveals ultrafast downhill energy transfer in photosystem i trimers of the cyanobacterium thermosynechococcus elongatus

Jessica M. Anna; Evgeny E. Ostroumov; Karim Maghlaoui; James Barber; Gregory D. Scholes

doi:10.1021/jz3018013

Two-dimensional electronic spectroscopy reveals ultrafast downhill energy transfer in photosystem i trimers of the cyanobacterium thermosynechococcus elongatus

Jessica M. Anna, Evgeny E. Ostroumov, Karim Maghlaoui, James Barber, Gregory D. Scholes

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

Two-dimensional electronic spectroscopy (2DES) was used to investigate the ultrafast energy-transfer dynamics of trimeric photosystem I of the cyanobacterium Thermosynechococcus elongatus. We demonstrate the ability of 2DES to resolve dynamics in a large pigment-protein complex containing ∼300 chromophores with both high frequency and time resolution. Monitoring the waiting-time-dependent changes of the line shape of the inhomogeneously broadened Q_y(0-0) transition, we directly observe downhill energy equilibration on the 50 fs time scale.

Original language	English (US)
Pages (from-to)	3677-3684
Number of pages	8
Journal	Journal of Physical Chemistry Letters
Volume	3
Issue number	24
DOIs	https://doi.org/10.1021/jz3018013
State	Published - Dec 20 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Materials Science
Physical and Theoretical Chemistry

Keywords

Excited States
Photochemistry
Spectroscopy

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10.1021/jz3018013

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title = "Two-dimensional electronic spectroscopy reveals ultrafast downhill energy transfer in photosystem i trimers of the cyanobacterium thermosynechococcus elongatus",

abstract = "Two-dimensional electronic spectroscopy (2DES) was used to investigate the ultrafast energy-transfer dynamics of trimeric photosystem I of the cyanobacterium Thermosynechococcus elongatus. We demonstrate the ability of 2DES to resolve dynamics in a large pigment-protein complex containing ∼300 chromophores with both high frequency and time resolution. Monitoring the waiting-time-dependent changes of the line shape of the inhomogeneously broadened Qy(0-0) transition, we directly observe downhill energy equilibration on the 50 fs time scale.",

keywords = "Excited States, Photochemistry, Spectroscopy",

author = "Anna, \{Jessica M.\} and Ostroumov, \{Evgeny E.\} and Karim Maghlaoui and James Barber and Scholes, \{Gregory D.\}",

year = "2012",

month = dec,

day = "20",

doi = "10.1021/jz3018013",

language = "English (US)",

volume = "3",

pages = "3677--3684",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

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}

Two-dimensional electronic spectroscopy reveals ultrafast downhill energy transfer in photosystem i trimers of the cyanobacterium thermosynechococcus elongatus. / Anna, Jessica M.; Ostroumov, Evgeny E.; Maghlaoui, Karim et al.
In: Journal of Physical Chemistry Letters, Vol. 3, No. 24, 20.12.2012, p. 3677-3684.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Two-dimensional electronic spectroscopy reveals ultrafast downhill energy transfer in photosystem i trimers of the cyanobacterium thermosynechococcus elongatus

AU - Anna, Jessica M.

AU - Ostroumov, Evgeny E.

AU - Maghlaoui, Karim

AU - Barber, James

AU - Scholes, Gregory D.

PY - 2012/12/20

Y1 - 2012/12/20

N2 - Two-dimensional electronic spectroscopy (2DES) was used to investigate the ultrafast energy-transfer dynamics of trimeric photosystem I of the cyanobacterium Thermosynechococcus elongatus. We demonstrate the ability of 2DES to resolve dynamics in a large pigment-protein complex containing ∼300 chromophores with both high frequency and time resolution. Monitoring the waiting-time-dependent changes of the line shape of the inhomogeneously broadened Qy(0-0) transition, we directly observe downhill energy equilibration on the 50 fs time scale.

AB - Two-dimensional electronic spectroscopy (2DES) was used to investigate the ultrafast energy-transfer dynamics of trimeric photosystem I of the cyanobacterium Thermosynechococcus elongatus. We demonstrate the ability of 2DES to resolve dynamics in a large pigment-protein complex containing ∼300 chromophores with both high frequency and time resolution. Monitoring the waiting-time-dependent changes of the line shape of the inhomogeneously broadened Qy(0-0) transition, we directly observe downhill energy equilibration on the 50 fs time scale.

KW - Excited States

KW - Photochemistry

KW - Spectroscopy

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SN - 1948-7185

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JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 24

ER -

Two-dimensional electronic spectroscopy reveals ultrafast downhill energy transfer in photosystem i trimers of the cyanobacterium thermosynechococcus elongatus

Abstract

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