Influence of fluorinated group on the photophysics of 7-AMINOCOUMARIN (cas 19063-57-1)s
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Add time:07/23/2019 Source:sciencedirect.com
The photophysical properties of fluorinated 7-aminocoumarin derivatives with different alkylation degree at the amino group are studied in water/ethanol mixtures. The effect of the molecular structure of the chromophore and solute-protic solvent interactions are considered to explain the observed spectral shifts and the internal conversion process. The radiationless deactivation process is analyzed on the basis of the formation of a twisted intramolecular charge transfer state and a planar-to-pyramidal structural change of the amino group.
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