Abstract
DR. E. E. JELLEY finds that certain dyes exhibit a characteristic absorption spectrum associated with fluorescence of slightly longer wave-length, on precipitation from their solutions, before they become crystalline. He considers that they are then in a molecularly disperse state. The author describes the preparation of such disperse systems of a F-cyanine dye in both liquids and solids. They show an unusually narrow absorption and fluorescence band, analogous to that of the ruby.
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Points from Foregoing Letters. Nature 138, 1018 (1936). https://doi.org/10.1038/1381018a0
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DOI: https://doi.org/10.1038/1381018a0