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Review | Regular issue | Vol 26, No. 11, 1987, pp.2963-2982
Published online, 1st January, 1970
DOI: 10.3987/R-1987-11-2963
Pyridinium Salts: Luminescent Spectroscopy and Photochemistry

Michail I. Knyazhanskii, Yakov R. Tymyanskii, Vladimir M. Feigelman, and Alan R. Katritzky

*Center for Drug Discovery, College of Pharmacy, University of Florida, Gainesville, Florida 32611-7200, U.S.A.


The electronic absorption and emission properties of pyridinium cations are summarized and rationalized in terms of their molecular structure. Photochemical processes of pyridinium salts are surveyed vith particular reference to cyclization reactions and the effect on reaction modes and rates of structural variations. The various photophysical and photochemical processes are formulated in a general scheme of photoinduced excitation and relaxations.