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- W2259512761 abstract "Evidence for the self-aggregation of 10(S)-chlorophyll a ( = chlorophyll a′) in nonpolar solvents has been obtained by means of absorption spectroscopy in the visible and infrared regions. The visible absorption spectrum of chlorophyll a′ exhibits a shoulder at 680 nm in aliphatic hydrocarbon solvents and the infrared spectrum measured in carbon tetrachloride contains an “aggregation peak” at 1650 cm -1 . IR spectroscopy shows, in addition, that the C-10 epimers of chlorophyll a are both present as monomers in tetrahydrofuran. However, in the presence of a small amount of aliphatic alcohol or water, the IR spectrum in tetrahydrofuran at lowered temperatures exhibits an intense, wide absorption band at ～ 1650 cm -1 which was interpreted as arising from the hydrogen bonding of the hydroxyl group to the C-9 keto carbonyl of the chlorophyll" @default.
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- W2259512761 date "1984-05-01" @default.
- W2259512761 modified "2023-10-01" @default.
- W2259512761 title "Electron Donor-Acceptor Properties of 10(S)-Chlorophyll a" @default.
- W2259512761 doi "https://doi.org/10.1515/znb-1984-0523" @default.
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