“…[6,10] These dyes have been used in recent years in several studies related to solvatochromism, [6,7,9,10] halochromism, [11][12][13] mixed solvents, [14][15][16][17][18][19] and microheterogeneity in solution. [20] Despite the number of studies on the behavior in solution of some classes of dyes in the presence of CyDs, [2,[21][22][23][24][25] we can find very few similar studies related to solvatochromic dyes, for instance, with the well-known probes 1 and 2. Recently, a study of the effect of the addition of methyl-b-CyD on the solvatochromic bands of 1 and 2, using the UV-Vis technique and several media, showed that the dyes interact strongly with CyD by means of hydrogen bonding and hydrophobic effects.…”