Photoprotolytic dissociation in micellar solutions

Hydrogen‐Bonded Large Molecular Aggregates of Charged Amphiphiles and Unusual Rheology: Photochemistry and Photophysics of Hydroxyaromatic Dopants

“…The fluorescence kinetic curves for 2-naphthol and the anion of 1-naphthol are shown in Figures 31.22 and 31.23. The rate constant of ESPT of hydroxyaromatic compounds in Brij 56 and in the alkyl sulphates also decreased as compared with those in aqueous solutions because of the lower polarity and higher microviscosity of the micelles [99]. For CTAB micelles, the retardation effect of the micelles is compensated for by the catalytic effect of the micellar potential.…”

Histidine-functionalized water-soluble nanoparticles for biomimetic nucleophilic/general-base catalysis under acidic conditions

“…1d). 27 ) The emission wavelength of ANS has a strong dependence on the solvent polarity. 23 Once bound to a CTAB micelle, ANS emitted more strongly, as expected from the higher environmental hydrophobicity.…”

Properties of surface-cross-linked micelles probed by fluorescence spectroscopy and their catalysis of phosphate ester hydrolysis

“…Regardless of the models used, because excitation and fluorescence are much faster than typical binding and chemical reactions, the fluorescence spectrum of a probe in a micellar solution is a superposition of the spectra of the dissolved and micellebound populations of the probe, even if the entry rate of the probe into the micelles is diffusion-controlled [28]. On the other hand, since over 95% of 2-naphthol, pyranine, and other similar sulfonated fluorescent probes in CTAB solutions were found to be bound by the micelles by fluorescence quenching [28], we assumed that the spectra obtained in our micellar solutions also came from the micelle-bound state. The assumption was reasonable given the negligible emission of ANS in the HEPES buffer (Fig.…”