Artificial photosynthesis at octane/water interface in the presence of hydrated chlorophyll a oligomer thin film

A. G. Volkov, M. I. Gugeshashvili, M. D. Kandelaki, V. S. Markin, B. Zelent, G. Munger, R. M. Leblanc

Research output: Contribution to journalConference article

9 Scopus citations

Abstract

The interface between two immiscible liquids with immobilized photosynthetic pigments can serve as the simplest model of a biological membrane convenient for the investigation of photoprocesses that are accompanied by spatial separation of charges. Oxygen evolution with a quantum efficiency of 10-20% can be seen by illuminating the octane/water interface having hydrated oligomer of chlorophyll a with proton acceptors in octane and electron acceptors in water. Considering the importance of such a model of photosynthetic membranes, in the present communication we have investigated the optical and absorption properties of wet chlorophyll a. The absorption, circular dichroism, and fluorescence properties of chlorophyll a in a non-polar solvent and in thin films were studied. The adsorption isotherms of dry and wet chlorophyll a at octane/water interface were also measured. The difference in adsorption behavior of chlorophyll a dissolved in dry and wet octane is discussed.

Original languageEnglish (US)
Pages (from-to)68-79
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1436
StatePublished - Jan 1 1991
Externally publishedYes
EventPhotochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films - Los Angeles, CA, USA
Duration: Jan 23 1991Jan 24 1991

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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