By luminescence spectroscopy of the decomposition products during excitation by monochromatic electrons with various energies in the gas phase it was shown that the investigated electroactive molecules with approximately the same dimensions and different chemical structure have very different stability during interaction with electrons. Luminescence from hydrogen, С2, and СН and also from СО, CN, I, Al, and Ir in molecules containing these elements or groups is observed in all the molecules. Luminescence from the decomposed molecules is observed at electron energies of ~40–50 eV (for the most typical components such as hydrogen in carbazole and metal in Al2O3). This indicates that the luminescence of the fragments results from their excitation by electrons. The amount and the luminescence intensity of the decomposition products increase with increase of temperature and electron energy.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 88, No. 4, pp. 647–652, July–August, 2021.
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Kukhta, A.V., Neyra, O.L., Mitriukhin, L.K. et al. Luminescence Investigations of the Effect of the Structure of the Molecules on their Stability during Interaction with Electrons in the Gas Phase. J Appl Spectrosc 88, 825–830 (2021). https://doi.org/10.1007/s10812-021-01246-9
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DOI: https://doi.org/10.1007/s10812-021-01246-9