Fluorescence-probe study of vesicle and micelle formations in a binary cationic surfactants system

Reversible Switching of a Micelle‐to‐Vesicle Transition by Compressed CO2

“…It is known that the microviscosity of vesicles is larger than that of micelles. [40] A significant change in I/I 0 ratio also suggests a MVT, and this phenomenon is consistent with the MVT accomplished by other methods.…”

“…This method is often used to monitor the course of the MVT in the cationic/anionic surfactant systems. [37,40] In the micelle solution, pyrene may easily enter the inner nonpolar center of the micelles and show the local environment. In vesicles, pyrene is solubilized in the bilayer.…”

Structural and morphological transition of long-chain phospholipid vesicles induced by mixing with short-chain phospholipid

“…In addition, the larger I e /I 1 values of DpyC 4 PC than those of DpyC 10 PC shows that the hydrophobic region is more fluid near the membrane surfaces than near membrane inside [25,26,31]. Furthermore, the microviscosity of hydrophilic part of the phospholipid assemblies was investigated by using auramine [27][28][29]. The relative fluorescence intensity of auramine I/I 0 , where I 0 represents the intensity in pure water, are plotted against [DHPC] in Fig.…”

“…The excitation wavelength was 335 nm for those probes. The fluorescence spectra of auramine were obtained by the excitation at 422 nm, and the values of relative fluorescence intensity were measured at 491 nm using the intensity of auramine aqueous solution without phospholipids as the control [27][28][29].…”

Effect of Stereochemistry on the Molecular Aggregation of Phenylalanine Dipeptide-type Surfactants

“…Fluorescence measurements were carried out on a Perkin-Elmer fluorescence spectrophotometer LS-55 at 298.2 K. It is known that the ratio of the fluorescence intensity in a surfactant solution (I) to that in an aqueous solution containing no surfactant (I 0 ) is increased when AM and PNA molecules are solubilized in molecular aggregates like a micelle [23][24][25][26][27] . The excitation and emission wavelengths of AM were 390 nm and ca.…”