Electronic and vibrational coherences in algal light-harvesting proteins

Daniel Turner, Gregory D. Scholes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present broadband two-dimensional electronic spectra of a lightharvesting protein from photosynthetic algae. Analysis of the spectra show that the amplitude of the main cross peak oscillates as a function of the waiting time period. Both electronic coupling and intramolecular vibrational modes, and their mixture, can lead to such oscillations. Using predictions based on models of four-level systems, we describe ways to distinguish electronic from vibrational contributions to the coherence and find that both types of coupling contribute to the measured dynamics.

Original languageEnglish (US)
Title of host publication18th International Conference on Ultrafast Phenomena, UP 2012
Volume41
DOIs
StatePublished - 2013
Event18th International Conference on Ultrafast Phenomena, UP 2012 - Lausanne, Switzerland
Duration: Jul 8 2012Jul 13 2012

Other

Other18th International Conference on Ultrafast Phenomena, UP 2012
CountrySwitzerland
CityLausanne
Period7/8/127/13/12

Fingerprint

proteins
algae
electronics
electronic spectra
vibration mode
broadband
oscillations
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Turner, D., & Scholes, G. D. (2013). Electronic and vibrational coherences in algal light-harvesting proteins. In 18th International Conference on Ultrafast Phenomena, UP 2012 (Vol. 41). [08004] https://doi.org/10.1051/epjconf/20134108004

Electronic and vibrational coherences in algal light-harvesting proteins. / Turner, Daniel; Scholes, Gregory D.

18th International Conference on Ultrafast Phenomena, UP 2012. Vol. 41 2013. 08004.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Turner, D & Scholes, GD 2013, Electronic and vibrational coherences in algal light-harvesting proteins. in 18th International Conference on Ultrafast Phenomena, UP 2012. vol. 41, 08004, 18th International Conference on Ultrafast Phenomena, UP 2012, Lausanne, Switzerland, 7/8/12. https://doi.org/10.1051/epjconf/20134108004
Turner D, Scholes GD. Electronic and vibrational coherences in algal light-harvesting proteins. In 18th International Conference on Ultrafast Phenomena, UP 2012. Vol. 41. 2013. 08004 https://doi.org/10.1051/epjconf/20134108004
Turner, Daniel ; Scholes, Gregory D. / Electronic and vibrational coherences in algal light-harvesting proteins. 18th International Conference on Ultrafast Phenomena, UP 2012. Vol. 41 2013.
@inproceedings{87bb2b4d92464a0d8acfd8966c6a4aac,
title = "Electronic and vibrational coherences in algal light-harvesting proteins",
abstract = "We present broadband two-dimensional electronic spectra of a lightharvesting protein from photosynthetic algae. Analysis of the spectra show that the amplitude of the main cross peak oscillates as a function of the waiting time period. Both electronic coupling and intramolecular vibrational modes, and their mixture, can lead to such oscillations. Using predictions based on models of four-level systems, we describe ways to distinguish electronic from vibrational contributions to the coherence and find that both types of coupling contribute to the measured dynamics.",
author = "Daniel Turner and Scholes, {Gregory D.}",
year = "2013",
doi = "10.1051/epjconf/20134108004",
language = "English (US)",
isbn = "9782759809561",
volume = "41",
booktitle = "18th International Conference on Ultrafast Phenomena, UP 2012",

}

TY - GEN

T1 - Electronic and vibrational coherences in algal light-harvesting proteins

AU - Turner, Daniel

AU - Scholes, Gregory D.

PY - 2013

Y1 - 2013

N2 - We present broadband two-dimensional electronic spectra of a lightharvesting protein from photosynthetic algae. Analysis of the spectra show that the amplitude of the main cross peak oscillates as a function of the waiting time period. Both electronic coupling and intramolecular vibrational modes, and their mixture, can lead to such oscillations. Using predictions based on models of four-level systems, we describe ways to distinguish electronic from vibrational contributions to the coherence and find that both types of coupling contribute to the measured dynamics.

AB - We present broadband two-dimensional electronic spectra of a lightharvesting protein from photosynthetic algae. Analysis of the spectra show that the amplitude of the main cross peak oscillates as a function of the waiting time period. Both electronic coupling and intramolecular vibrational modes, and their mixture, can lead to such oscillations. Using predictions based on models of four-level systems, we describe ways to distinguish electronic from vibrational contributions to the coherence and find that both types of coupling contribute to the measured dynamics.

UR - http://www.scopus.com/inward/record.url?scp=84875676818&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875676818&partnerID=8YFLogxK

U2 - 10.1051/epjconf/20134108004

DO - 10.1051/epjconf/20134108004

M3 - Conference contribution

AN - SCOPUS:84875676818

SN - 9782759809561

VL - 41

BT - 18th International Conference on Ultrafast Phenomena, UP 2012

ER -