Synthesis of novel fluorescent styryl dyes based on the imidazo[1,2- a]pyridinium chromophore and their spectral-fluorescent properties in the presence of nucleic acids and proteins

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Synthesis of novel fluorescent styryl dyes based on the imidazo[1,2- a]pyridinium chromophore and their spectral-fluorescent properties in the presence of nucleic acids and proteins

Kovalska, V.B.; Losytskyy, M.Yu; Kryvorotenko, D.V.; Balanda, A.O.; Tokar, V.P.; Yarmoluk, S.M.

Dyes and pigments, 2006, 2006-1-00, Volume: 68, Issue: 1

Journal Article

The imidazo1,2- apyridinium heterocyclic system was used to prepare styryl dyes. Improved synthetic methods were proposed for the parent imidazo1,2- apyridines and their corresponding quaternary salts. The standard method for preparing styrylcyanines was modified for the synthesis of the target imidazo1,2- apyridinium dyes. Spectral-luminescent properties of the obtained dyes in free state and in the presence of nucleic acids, BSA, and BSA/detergent system were studied. 7-2-(4-Dihexylaminophenyl)-1-ethenyl-2-(2,4-dimethoxyphenyl)-1-ethylimidazo1,2- apyridin-1-ium iodide (SIP-8) containing C 6 aliphatic tails and 2,4-methoxy substituents in the 2-phenyl ring exhibited specificity to BSA.

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