Temperature-Controlled Vesicle Aggregation in the Mixed System of Sodium n-Dodecyl Sulfate/n-Dodecyltributylammonium Bromide

Abstract

Temperature-controlled vesicle aggregation was investigated in a catanionic surfactant system of sodium n-dodecyl sulfate/n-dodecyltributylammonium bromide. Vesicle aggregation took place as the temperature reached the critical value (Tc). Tc can be adjusted by the variations of the total surfactant concentration and the mixed molar ratio. It was also found that the temperature variation above Tc can greatly influence the vesicle aggregation rate. The vesicle aggregation process was irreversible as long as T >/= Tc, whereas the vesicle disaggregation process occurred only below Tc.

Synthesis of Hollow Gold Nanospheres and Their Applications in Surface‐enhanced Raman Scattering and DNA Biosensor

“…Because vesicle structure may occur as the temperature reaches the critical value and disrupt upon increasing the temperature. 26,27 Figure 3 demonstrates the UV-visible absorption spectra of samples A, B, C and the solid Au nanoparticles in suspension solution. The dark appearance of the HGNs suggested a wide absorbance throughout the visible region.…”

Lysozyme binding onto cat-anionic vesicles

“…The reasons for that arise from the noticeable interest toward potentially relevant bio-mimetic systems. Cat-anionic vesicles (an acronym derived from the terms cationic + anionic), in particular, were used [4][5][6][7][8]. Such vesicles are easily prepared, not costly, and are valid alternatives to lipo-somes as carriers in gene therapy [9,10].…”

Recent advances in the mixed systems of bolaamphiphiles and oppositely charged conventional surfactants

“…For instance, spherical and worm-like micelles, or vesicles can be obtained simply by tuning the mixing ratio [37][38][39][40] and other environmental conditions [41][42][43][44][45]. Especially, the report of spontaneous formation of vesicles in the catanionic surfactant solutions of single tailed CTAT/SDBS system [46] overturned the well-accepted opinion that only lipid molecules with double tails can form vesicles upon sonication.…”