Abstract
SOME time ago we investigated the fluorescent spectra of solid solutions of naphthalene with added naphthacene, naphthalene with added 1,2,5,6-dibenzanthracene, and anthracene with added naphthacene, under X-ray excitation1. We found that the fluorescence characteristic of the added compound increased with concentration to a maximum, and then fell off. The results for anthracene with added naphthacene agreed with those of Bowen2, and all the results could be explained on the basis of the exciton theory proposed by Bowen and his colleagues2,3. The solid solutions were prepared by dissolving under gentle heat a small, carefully weighed amount of one compound in a known amount of the other. The samples were excited with X-rays, and the spectra were obtained by means of a Beckman Model DU quartz spectrophotometer used as a monochromator, with a 931-A. photomultiplier tube used as detector.
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References
Lipsett, F. R., and Dekker, A. J., Canad. J. Phys., 30, 165 (1952).
Bowen, E. J., Nature, 159, 706 (1947).
Bowen, E. J., Mikiewicz, E., and Smith, F. W., Proc. Phys. Soc., A, 62, 26 (1949).
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LIPSETT, F., DEKKER, A. Fluorescent Spectra of Solid Solutions of Naphthalene with Added Anthracene. Nature 173, 736–737 (1954). https://doi.org/10.1038/173736b0
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DOI: https://doi.org/10.1038/173736b0
