Transfer of Azoniabetain Dyes into Micelle of Surfactants from Water.

Abstract

Transfers of dyes into micelles of anionic, cationic or nonionic surfactants from water have been investigated by means of spectroscopy. The dyes used were ortho or para hydroxy-2-styrylbenzo |a| quinolizium salts |A (OH), B (OH)| and B (OH) with methyl radical |C (OH)| and their phenolate derivatives | A (O-), B (O-), and C (O-)| and 4-nitrophenole (NPh), 4-nitroaniline (NA) and N, N-dimethyl-4-nitroaniline (NMA), The dyes of A (OH), B (OH), and C (OH) and NPh were not transfered into micelles of these three surfactants from water. The dyes of phenolate from, A (O-), B (O-), and C (O-), NA and NMA, could not be incorporated into the anionic surfactant micelles, but were incorporated into cationic and nonionic surfactant micelles. The equilibrium constants of these surfactant micelles were close to each other, and were in the order of NMA>NA>C (O-)>A (O-)_??_B (O-). The polarity of the inside of micelles was estimated on basis of the spectral shifts of the dyes.