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) |
|---|---|
| Pages (from-to) | 68-79 |
| Number of pages | 12 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 1436 |
| State | Published - Jan 1 1991 |
| Externally published | Yes |
| Event | Photochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films - Los Angeles, CA, USA Duration: Jan 23 1991 → Jan 24 1991 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering