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- W2021034203 abstract "Abstract Fluorescence resonance energy transfer (FRET) has become a major tool for the static and dynamic study of conformational changes in biological systems. We report herein the investigation of a switchable pyridine–pyrimidine–pyridine scaffold as a support to ion-controlled intramolecular FRET. A dissymmetrical switch bearing naphthalene and acridine fluorophores was synthesized and its photophysical behavior studied. In the neutral state where the molecule adopts a U-shape, the emission of the naphthalene is quenched while a strong emission from the acridine fluorophore is observed, consistent with energy transfer between the naphthalene and the acridine units. The emission of the acridine is also enhanced by the pyridine-induced sensitization (excitation at 280 nm). After introduction of a copper(I) cation which switches the conformation to a W-shape, the complex formed shows the emission of both the naphthalene and acridine units when excited at 280 nm, although coordination also leads to a strong quenching of emission." @default.
- W2021034203 created "2016-06-24" @default.
- W2021034203 creator A5059296399 @default.
- W2021034203 creator A5079214775 @default.
- W2021034203 date "2007-02-01" @default.
- W2021034203 modified "2023-09-26" @default.
- W2021034203 title "Conformational switching of the pyridine–pyrimidine–pyridine scaffold for ion-controlled FRET" @default.
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- W2021034203 doi "https://doi.org/10.1016/j.ica.2006.05.041" @default.
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