A REVERSIBLE PHOTOCHEMICAL REACTION OF CHLOROPHYLL a WITH I2
- 1 February 1969
- journal article
- Published by Wiley in Photochemistry and Photobiology
- Vol. 9 (2) , 151-163
- https://doi.org/10.1111/j.1751-1097.1969.tb05919.x
Abstract
Abstract— Chlorophyll a and I2 form a 1:1 addition compound, which exhibits a strong absorption maximum at about 360 nm. When dissolved in anaerobic methanol, this compound can be reversibly bleached by illumination with red light. Prolonged illumination at low temperatures (˜– 75°C) or intense illumination at room temperature reduces the height of the red absorp tion maximum to about half of its normal value. Since the thermal back reaction is negligibly slow at – 75°C, presumably the chlorophyll‐I2 complex is converted completely to its bleached form, when illuminated under those conditions. This assumption leads to a simple mechanism which is consistent with the experimental data.Keywords
This publication has 22 references indexed in Scilit:
- A theory of light utilization in plant photosynthesisJournal of Theoretical Biology, 1964
- A FURTHER STUDY OF THE PHOTOTROPY OF CHLOROPHYLL IN SOLUTION1The Journal of Physical Chemistry, 1962
- Oxidized Cytochrome and Chlorophyll C2 + in PhotosynthesisNature, 1961
- Oxidation-reduction potentials of different chlorophylls in methanolBiochimica et Biophysica Acta, 1958
- Investigations on bacteriochlorophyll in organic solutionsBiochimica et Biophysica Acta, 1958
- Complexes of Iodine with an Ether and an AlcoholThe Journal of Chemical Physics, 1952
- The Further Studies on the Reversible Photobleaching of Chlorophyll a.The Journal of Physical Chemistry, 1950
- The Absorption Spectrum of Iodine in AcetoneJournal of the American Chemical Society, 1950
- Spectrophotometric Determination of Microquantities of IodineAnalytical Chemistry, 1949
- Reversible Photobleaching of ChlorophyllThe Journal of Physical Chemistry, 1948