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Journal of Solution Chemistry

, Volume 23, Issue 2, pp 223–248 | Cite as

Light energy conversion with pheophytina monolayer at the SnO2 optically transparent electrode

  • A. G. Volkov
  • V. S. Markin
  • R. M. Leblanc
  • M. I. Gugeshashvili
  • B. Zelent
  • G. Munger
Article

Abstract

The photoelectrochemical, absorption and fluorescence properties of pheophytin a mono- and multilayers, deposited on optically transparent tin oxide electrodes and quartz slides were investigated. Spectra of photocurrents coincided with the absorption spectra of photosynthetic pigment in monolayers at the SnO2/solution interfaces. The anodic and cathodic photocurrents were measured at various electrode potentials. Effects of pH, electrode potentials, and concentration of redox reagents on the conversion of solar energy in monolayers on optically transparent electrodes are discussed. The absorption and fluorescence spectral characteristics, and fluorescence lifetime measurements of pheophytina in monolayers and thin films are also discussed in view of the aggregation properties of the photosynthetic pigment. The thermodynamics of adsorption of large amphiphilic compounds at the interface between two immiscible liquids is considered. The adsorption behavior of pheophytin a dissolved in different solvents is investigated. The thermodynamic parameters of pheophytin a adsorption at octane/water and benzene/water interfaces were determined.

Key Words

Photosynthesis pheophytina photoelectrochemistry 

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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • A. G. Volkov
    • 1
  • V. S. Markin
    • 2
  • R. M. Leblanc
    • 3
  • M. I. Gugeshashvili
    • 3
  • B. Zelent
    • 3
  • G. Munger
    • 3
  1. 1.Division of Biological Sciences, Section of Molecular and Cellular BiologyUniversity of CaliforniaDavis
  2. 2.Department of Cell Biology and Neurosciences, Southwestern Medical CenterUniversity of TexasDallas
  3. 3.Centre de recherche en photobiophysiqueUniversité du Québec à Trois-RivièresTrois-RivièresCanada

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