Novel 18-crown-6-ether containing mono- and bisstyryl dyes derived from pyridine moiety as fluorescent dyes for non-covalent interaction with DNAстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
Аннотация:Bisstyrylpyridine dyes 1 and 2, in which two styrylpyridine moieties are connected to each other through the
oxo- or azacrown ether unit, and their monomer analogues 3 and 4 have been synthesized and spectroscopically
characterized. The prepared bisstyryl dyes 1 and 2 are the rare example of bisstyryls constructed in tail-to-tail
mode. The binding of dyes 1–4 with salmon DNA has been evaluated using the UV–vis, CD, fluorescence, highsensitivity
differential scanning calorimetry, viscometric data and molecular modeling. The dyes were found to
have negligible fluorescence in a buffer solution, but exhibited a significant emission increase upon binding to
DNA. The results obtained are consistent with a groove binding mode between mono- and bisstyryls and DNA.