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: Chapter in Book/Report/Conference proceedingConference contribution

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)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsMarcus F. Lawrence, Arthur J. Frank, S. Ramasesha, Carl C. Wamser
PublisherPubl by Int Soc for Optical Engineering
Pages68-79
Number of pages12
Volume1436
StatePublished - 1991
EventPhotochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films - Los Angeles, CA, USA
Duration: Jan 23 1991Jan 24 1991

Other

OtherPhotochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films
CityLos Angeles, CA, USA
Period1/23/911/24/91

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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    Volkov, A. G., Gugeshashvili, M. I., Kandelaki, M. D., Markin, V. S., Zelent, B., Munger, G., & Leblanc, R. M. (1991). Artificial photosynthesis at octane/water interface in the presence of hydrated chlorophyll a oligomer thin film. In M. F. Lawrence, A. J. Frank, S. Ramasesha, & C. C. Wamser (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1436, pp. 68-79). Publ by Int Soc for Optical Engineering.