Spectral Properties of Dyes with Interfragmental Charge Transfer: Solvatochromism and Solvatofluorochromism of 2-(3-Coumaroyl)-benzopyrylium Perchlorates

Figure 3

Plots of long-wavelength absorption band maxima () against polarity (a), nucleophilicity (b), and both polarity and nucleophilicity (c) of the medium.

(a)

(b)

(c)