skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Two-Dimensional Electronic-Vibrational Spectroscopy of Chlorophyll a and b

Journal Article · · Journal of Physical Chemistry Letters
 [1];  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Biophysics and Integrated Bioimaging Div.; Kavli Energy Nanoscience Institute at Berkeley, CA (United States)

Presented are two-dimensional electronic-vibrational (2DEV) spectra of isolated chlorophyll a and b in deuterated ethanol. We excite the Q-band electronic transitions and measure the effects on the carbonyl and C=C double-bond stretch region of the infrared spectrum. With the aid of density functional theory calculations, we provide assignments for the major features of the spectrum. We show how the 2DEV spectra can be used to readily distinguish different solvation states of the chlorophyll, with features corresponding to the minority pentacoordinate magnesium (Mg) species being resolved along each dimension of the 2DEV spectra from the dominant hexacoordinate Mg species. These assignments represent a crucial first step toward the application of 2DEV spectroscopy to chlorophyll-containing pigment-protein complexes.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1379232
Journal Information:
Journal of Physical Chemistry Letters, Vol. 7, Issue 5; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

References (30)

Molecular Mechanisms of Photosynthesis book December 2002
Quantum Coherence Enabled Determination of the Energy Landscape in Light-Harvesting Complex II journal December 2009
Pathways of Energy Flow in LHCII from Two-Dimensional Electronic Spectroscopy journal November 2009
Spectroscopic elucidation of uncoupled transition energies in the major photosynthetic light-harvesting complex, LHCII journal July 2010
Extracting the Excitonic Hamiltonian of the Fenna-Matthews-Olson Complex Using Three-Dimensional Third-Order Electronic Spectroscopy journal April 2011
Two-Dimensional Electronic Spectroscopy Reveals Ultrafast Downhill Energy Transfer in Photosystem I Trimers of the Cyanobacterium Thermosynechococcus elongatus journal November 2012
Energy Transfer Pathways in Light-Harvesting Complexes of Purple Bacteria as Revealed by Global Kinetic Analysis of Two-Dimensional Transient Spectra journal April 2013
Probing energy transfer events in the light harvesting complex 2 (LH2) of Rhodobacter sphaeroides with two-dimensional spectroscopy journal October 2013
2D Electronic Spectroscopy Reveals Excitonic Structure in the Baseplate of a Chlorosome journal May 2014
Coherence and population dynamics of chlorophyll excitations in FCP complex: Two-dimensional spectroscopy study journal April 2015
Two-Dimensional Electronic Spectroscopy of Light-Harvesting Complex II at Ambient Temperature: A Joint Experimental and Theoretical Study journal August 2015
A method for the direct measurement of electronic site populations in a molecular aggregate using two-dimensional electronic-vibrational spectroscopy journal September 2015
Correlating the motion of electrons and nuclei with two-dimensional electronic-vibrational spectroscopy journal June 2014
Determining the static electronic and vibrational energy correlations via two-dimensional electronic-vibrational spectroscopy journal May 2015
Measuring correlated electronic and vibrational spectral dynamics using line shapes in two-dimensional electronic-vibrational spectroscopy journal May 2015
Principles of Fluorescence Spectroscopy book January 2006
Pump−Probe Polarization Anisotropy Study of Femtosecond Energy Transfer within the Photosynthetic Reaction Center of Rhodobacter sphaeroides R26 journal January 1996
On the calculation of rotational anisotropy decay, as measured by ultrafast polarization-resolved vibrational pump-probe experiments journal May 2010
Surface-enhanced resonance Raman spectroscopy of copper chlorophyllin on silver and gold colloids journal June 1988
Normal-mode characteristics of chlorophyll models. Vibrational analysis of metallooctaethylchlorins and their selectively deuterated analogs journal December 1990
Measurement of the Fluorescence Lifetime of Chlorophyll a In Vivo journal April 1969
Molecular orientational relaxation times in liquids journal April 1975
Assignment of the Q-Bands of the Chlorophylls: Coherence Loss via Qx − Qy Mixing journal September 2013
Non-radiative relaxation of photoexcited chlorophylls: theoretical and experimental study journal September 2015
Characterization of bacteriochlorophyll interactions in vitro by resonance Raman spectroscopy journal October 1981
Resonance Raman and infrared studies on axial coordination to chlorophylls a and b in vitro journal January 1986
State of chlorophyll a in vitro and in vivo from electronic transition spectra, and the nature of antenna chlorophyll journal November 1974
Evidence for 5- and 6-coordinated magnesium in bacteriochlorophyll a from visible absorption spectroscopy journal September 1975
Hydrogen-bond lifetime measured by time-resolved 2D-IR spectroscopy: N-methylacetamide in methanol journal May 2001
Ultrafast Dynamics of Solute-Solvent Complexation Observed at Thermal Equilibrium in Real Time journal August 2005

Cited By (1)

Recent advances in multidimensional ultrafast spectroscopy journal January 2018