Abstract
Having established an easy approach to a new class of pyridinium-1-aminides bearing an N-perfluoroacyl residue, we studied the influence of the polarity of the solvent on the maximum absorption in the UV/vis spectra. N-perfluoroacyl-pyridinium-1-aminides have a strong interaction with the solvent determining negative solvatochromic effects which have been correlated with the E T(30) polarity parameters. Some relative quantum yields of the title aminides as fluorescence emitters are also reported and they show an interesting structure dependence.
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