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Radiothermoluminescence of 4,4′-Dimethyl-benzophenone

Nature volume 211, pages 1176–1177 (1966)Cite this article

Abstract

THE formation of radiation-induced colour centres in inorganic crystals is a well-known phenomenon1,2; however, such colour centres have been previously reported for only a limited number of simple organic compounds3. Colour formation in irradiated organic crystals probably results either from the unpairing of electron spins to give free radicals or triplet states or by the transfer of an electron into a lattice defect4. The latter would be the more probable explanation for stable colour formation. On heating the irradiated organic crystal to the melting point, emission of light and disappearance of colour would be expected as the electrons become released from lattice defects or free radicals combine.

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References

  1. Dienes, G. J., and Vineyard, G. H., Radiation Effects in Solids (Interscience Publishers, Inc., New York, 1957).

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  2. Schulman, J. H., and Compton, W. D., Color Centers and Solids (The Macmillan Company, New York, 1962).

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  3. Damereau, W., Lassman, G., and Thom, H. G., J. Phys. Chem., 223, 60 (1963).

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  4. Noyes, jun., W. A., Hammond, G. S., and Pitts, jun., J. N., Adv. in Photochem., 1–3 (Interscience Publishers, New York, 1963, 1964).

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Authors and Affiliations

  1. Washington Research Center, W. R. Grace and Co., Clarksville, Maryland

    N. S. MARANS, F. WESSELLS & S. OLFKY

Authors
  1. N. S. MARANS
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  2. F. WESSELLS
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  3. S. OLFKY
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MARANS, N., WESSELLS, F. & OLFKY, S. Radiothermoluminescence of 4,4′-Dimethyl-benzophenone. Nature 211, 1176–1177 (1966). https://doi.org/10.1038/2111176a0

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  • DOI: https://doi.org/10.1038/2111176a0

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