| | 1 | Author
| SeymourSteven Brody | Requires cookie* | | | Title
| Flash Photolysis of Liposomes Containing Chlorophyll and Zeaxanthin, as a Function of Temperature (2 °—34 °C)  | | | | Abstract
| The transfer o f triplet excitation from chlorophyll to zeaxanthin in lip osom es is a function o f temperature and pigment concentration. At 525 nm both chlorophyll and zeaxanthin triplet states are observed. The result is a biphasic increase in absorption. The rise time o f absorption by the chlorophyll triplet is much faster, than by the zeaxanthin triplet. With increasing temperature the contribution o f absorption by zea xanthin (relative to that o f chlorophyll) at 525 nm increases, and its rise tim e gets faster. At high ratios o f zeaxanthin to chlorophyll, temperature has less effect on both the rise tim e and absorption by the zeaxanthin triplet state. The chlorophyll triplet is measured at 780 nm. It decays faster with increasing temperature and or increasing ratio o f zeaxanthin to chlorophyll. The results are interpreted in terms of: increasing fluidity o f the lipid lip osom e with tem per ature, formation o f zeaxanthin-chlorophyll com plexes at high ratios o f zeaxanthin and chloro phyll, presence o f different lipid phases in the lip osom e bilayer. | | | |
Reference
| Z. Naturforsch. 39c, 1108—1111 (1984); received June 15 1984 | | | |
Published
| 1984 | | | |
Keywords
| Chlorophyll, Carotenoid, Liposomes, Triplet States, Excitation Energy Transfer | | | |
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| default:Reihe_C/39/ZNC-1984-39c-1108.pdf | | | | Identifier
| ZNC-1984-39c-1108 | | | | Volume
| 39 | |
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