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A Low-temperature Emission Band from Dilute Solutions of Pure Chlorophyll a

Naturevolume 199pages10971098 (1963) | Download Citation



PREVIOUSLY published fluorescence spectra of chlorophyll a in dilute ethyl other solution show a major band with maximum at 668 mµ and a minor band with maximum at 723 mµ., at room temperature1,2; at 77° K in ether–isopentane–ethanol (EPA), chlorophyll also exhibits two emission bands, with maxima at about 684 and 735 mµ3.

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  1. 1

    Zscheile, F., and Harris, D., J. Phys. Chem., 47, 623 (1943).

  2. 2

    Duysens, L., thesis, Utrecht (1952).

  3. 3

    Fernandez, J., and Becker, R. S., J. Chem. Phys., 31, 467 (1967).

  4. 4

    Jacobs, E., Vatter, A., and Holt, S., Arch. Biochem. Biophys., 53, 228 (1954).

  5. 5

    Anderson, A. F. H., and Calvin, M., Nature, 194, 285 (1962).

  6. 6

    However, weak emission bands at 885 and 925 mμ were reported by Singh, J., and Becker, R., J. Amer. Chem. Soc., 82, 2083 (1960), at 77° K, in EPA.

  7. 7

    Franck, J., Proc. U.S. Nat. Acad. Sci., 44, 941 (1958).

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  1. IBM Watson Laboratory, Columbia University, New York

    •  & S. B. BROYDE


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