Linda M. Sweeting

Triboluminescence spectra of organic crystals are sensitive to conditions of acquisition

Abstract An examination of the triboluminescence spectra of six crystalline organic solids revealed the presence of both the C 3 π u → B 3 π g emission of dinitrogen and photoluminescence; m -nitrobenzonitrile showed only dinitrogen emission with unusual intensities. The spectra of each solid contained varying fractions of triboluminescent emissions from photoluminescence and dinitrogen emission modified by absorption by the solid, and dinitrogen emission from static discharge to the apparatus.

Spectroscopy and Mechanism in Triboluminescence

Abstract The presence of C3πu → B3πg emissions of dinitrogen and photoluminescence in triboluminescence spectra provides information about the mechanism of light production.

An improved method for determining triboluminescence spectra

Abstract Intensified diode array detectors were used to obtain triboluminescence spectra. For sucrose, uranyl nitrate and triethylammonium tetrakis(dibenzoylmethide)europate, the signal-to-noise ratios of the spectra were one to three orders of magnitude better than those previously reported. The triboluminescence spectra of menthol and 9-anthrylmethanol were determined for the first time. The triboluminescence spectra of menthol and sucrose have intensities which correspond quite well to that of the nitrogen discharge, indicating that charge separation rather than a radiationaless transition is responsible for the triboluminescence in these compounds.