Abstract
CHLOROPHYLL solutions undergo a reversible ‘bleaching’ when strongly irradiated1,2. Possible explanations for the effect have postulated the formation of a long-lived excited state of the dye followed by a dismutation reaction between excited and normal dye molecules2,3, or a red ox reaction between the excited dye and solvent4. To date, work on the photo-bleaching reaction has been carried out at room temperature in fluid solvents, and has dealt with changes in the red absorption band.
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References
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LINSCHITZ, H., RENNERT, J. Reversible Photo-Bleaching of Chlorophyll in Rigid Solvents. Nature 169, 193–194 (1952). https://doi.org/10.1038/169193b0
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DOI: https://doi.org/10.1038/169193b0
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