Abstract
A study has been made of the influence of electronic and steric factors of the aromatic substituent in 9-arylaminoacridines on the behavior of these compounds when subjected to light quanta or electron impact. It has been shown that the introduction of donor substituents shifts the absorption and luminescence spectra toward longer wavelengths, with a simultaneous increase of the Stokes shift and a decrease of the quantum yield of luminescence, it has been established that the introduction of sterically hindered substituents has a similar effect. In the mass spectra, the introduction of substituents with stronger donor properties tends to increase the stability of the molecular ions.
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