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 language | English (US) |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Editors | Marcus F. Lawrence, Arthur J. Frank, S. Ramasesha, Carl C. Wamser |
Publisher | Publ by Int Soc for Optical Engineering |
Pages | 68-79 |
Number of pages | 12 |
Volume | 1436 |
State | Published - 1991 |
Event | Photochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films - Los Angeles, CA, USA Duration: Jan 23 1991 → Jan 24 1991 |
Other
Other | Photochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films |
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City | Los Angeles, CA, USA |
Period | 1/23/91 → 1/24/91 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics