Letter | Published:

High Intensity Triboluminescence in Europium Tetrakis (Dibenzoylmethide)-triethylammonium

Naturevolume 212pages179180 (1966) | Download Citation



THE emission of light which accompanies mechanical deformation or fracture of certain crystalline compounds is designated as triboluminescence. Stranski et al.1,2 investigated some 1,700 organic and inorganic substances and found 356 of them to exhibit triboluminescence. Special impact mechanisms and complete darkness are required to observe the triboluminescent emission from all previously reported triboluminescent materials. In addition, a number of these compounds showed detectable triboluminescence only in a small range of environmental gas pressure and low temperature. Triboluminescence emission from europium tetrakis (dibenzoylmethide)-triethylammonium (EuD4TEA) is clearly visible in broad daylight at room temperature when crystals are broken with a glass rod or spatula in a test-tube. Apparently this property is common to most europium tetrakis (dibenzoylmethide) complexes which contain a variety of organic cations derived from aliphatic amines. The relative intensity of triboluminescent emission, however, varies significantly with the nature of the substituted ammonium ion, the method of preparation, average size of crystals, and recrystallization solvent.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Wolff, Von G., Gross, G., and Stranski, N., Z. Elektrochem., 56, 420 (1952).

  2. 2

    Wolff, Von G., Gross, G., and Stranski, N., Z. Elektrochem., 59, 341 (1955).

  3. 3

    Filipescu, N., Sager, W. F., and Serafin, F. A., J. Phys. Chem., 68, 3324 (1964).

  4. 4

    Filipescu, N., Sager, W. F., and Serafin, F. A., J. Phys. Chem., 69, 1092 (1965).

  5. 5

    Bjorklund, S., Filipescu, N., McAvoy, N., and Degnan, J., J. Chem. Phys. (in the press).

  6. 6

    McAvoy, N., Filipescu, N., and Kagan, M. R., J. Phys. Chem. Solids, 25, 461 (1964).

Download references

Author information


  1. Goddard Space Flight Center, Greenbelt, Maryland

    • C. R. HURT
    •  & N. MCAVOY
  2. The George Washington University, Washington, D.C., 6

    •  & N. FILIPESCU


  1. Search for C. R. HURT in:

  2. Search for N. MCAVOY in:

  3. Search for S. BJORKLUND in:

  4. Search for N. FILIPESCU in:

About this article

Publication history

Issue Date



Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.