Skip to main content
eScholarship
Open Access Publications from the University of California

Two-Dimensional Electronic-Vibrational Spectroscopy of Chlorophyll a and b.

  • Author(s): Lewis, Nicholas HC
  • Fleming, Graham R
  • et al.

Published Web Location

http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.6b00037
No data is associated with this publication.
Abstract

We present 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.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Item not freely available? Link broken?
Report a problem accessing this item