1-Phenylethynylpyrene (1-PEPy) as Refined Excimer Forming Alternative to Pyrene: Case of DNA Major Groove Excimer
Bioconjugate Chemistry2007Vol. 18(6), pp. 1972–1980
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Kira Astakhova, Andrei D. Malakhov, I. A. Stepanova, Alexey V. Ustinov, С. Л. Бондарев, Alexander S. Paramonov, Vladimir A. Korshun
Abstract
1-Phenylethynylpyrene fluorochrome was studied as meta- and para-derivatives of arabino-uridine-2'-carbamates in ss and dsDNA. 1-PEPy showed red-shifted emission and increased fluorescence quantum yield compared to pyrene. Although 1-PEPy has very short excited lifetime (<2.5 ns), it is able to form inter- and intrastrand excimers on DNA, probably resulting from spatial preorganization of two dye molecules.
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