Vol. 17, issue 02-03, article # 30

pdf Artyukhov V.Ya., Morev A.V. Influence of fluorination of pyridine radical on the spectral luminescent and physico-chemical properties of 4-aminopyridine . // Atmospheric and oceanic optics. 2004. V. 17. No. 02-03. P. 221-223.
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The effect of substitution of the fluorine atoms on spectral, geometric, and photophysical characteristics, as well as proton-donating and proton-accepting properties of free aminopyridine molecules is studied by the methods of electron spectroscopy and quantum chemistry. Energy levels of singlet and triplet states of 4-aminopyridine and 4-aminotetrafluorpyridine are calculated. For 4-aminopyridine and 4-aminotetrafluorpyridine, the band in the middle spectral region is shown to be formed by several electronic transitions of different type and intensity.