TY - GEN
T1 - Electronic and vibrational coherences in algal light-harvesting proteins
AU - Turner, Daniel B.
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
U2 - 10.1051/epjconf/20134108004
DO - 10.1051/epjconf/20134108004
M3 - Conference contribution
AN - SCOPUS:84875676818
SN - 9782759809561
T3 - EPJ Web of Conferences
BT - 18th International Conference on Ultrafast Phenomena, UP 2012
T2 - 18th International Conference on Ultrafast Phenomena, UP 2012
Y2 - 8 July 2012 through 13 July 2012
ER -