Abstract
The surface pressure-area isotherms of chlorophyll a, alpha -tocopherylquinone, and plastoquinone 3 and 9 were studied at the air-water interface. Mixtures of chlorophyll a with those molecules were also measured. Results for mixed monolayers were analyzed in terms of the additivity rule. For the chlorophyll a/ alpha -tocopherylquinone and chlorophyll a/plastoquinone 3 mixtures, negative deviations from ideality were observed independent of surface pressure. The chlorophyll a/plastoquinone 9 mixtures were shown to be miscible. Excess free energies of mixing were calculated for the chlorophyll a/ alpha -tocopherylquinone and chlorophyll a/ plastoquinone 3 mixtures at four different surface pressures. They are similar to those found for the chlorophyll a/vitamin K//1 system.
Original language | English (US) |
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Pages (from-to) | 575-580 |
Number of pages | 6 |
Journal | Langmuir |
Volume | 3 |
Issue number | 4 |
DOIs | |
State | Published - Jul 1 1987 |
Externally published | Yes |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Spectroscopy
- Electrochemistry