Effect of a Substituent in the Fourth Position on the Optical Properties of 2-Oxonicotinonitriles

S. P. Sorokin^a, S. V. Fedoseev^a, and O. V. Ershov^a^,*

^aI.N. Ulyanov Chuvash State University, Cheboksary, 428015 Russia

email: *oleg.ershov@mail.ru

Received 20 July, 2022

Abstract— Based on six representatives of 2-oxonicotinonitriles, the effect of the nature of the substituent in the fourth position of the pyridine system on the photophysical characteristics was studied. The role of the donor/acceptor nature of the substituent and the solvent nature in the absorbing and fluorescent properties of the compounds was shown.

Keywords: pyridines, nicotinonitrile, fluorescence, nitriles, trifluoromethyl, isonicotinic acid

DOI: 10.1134/S1070363222110366