Hexafluoroisopropanol-modified cetyltrimethylammonium bromide/sodium dodecyl sulfate vesicles as a pseudostationary phase in electrokinetic chromatography

Capillary Electrophoresis

“…Tian et al created a novel pseudostationary phase with hexafluoroisopropanol (HFIP) as the organic modifier for cationic surfactant micelles. 44 HFIP was combined with cetyltrimethylammonium bromide (CTAB) and SDS for the separation of eight polycyclic aromatic hydrocarbons along with other analytes. The 3% v/v HFIP-modified 3:7 mol/mol CTAB/SDS was shown to be the best for separation of the analytes.…”

Capillary electrophoresis coupled to mass spectrometry employing hexafluoro-2-propanol for the determination of nucleosides and nucleotide mono-, di- and tri-phosphates in baby foods

“…Hexafluoro-2-propanol (HFIP) has been used as a modifier of vesicle systems (Tian, Li, Mei, Deng, & Xiao, 2015) and together with Gemini pyrrolidinium surfactants in phosphate buffer has been employed as a dynamic coating in the CE-DAD separation of proteins (Tian, Li, Mei, Cai et al, 2015). In addition, due to its behaviour as a strong H-bond, HFIP seems to be an excellent coacervation-inducing agent and has been used to produce a phase separation in micellar systems, taking advantage of its capacity to separate and preconcentrate strongly polar analytes (Chen, Zhang, Li, Mei, & Xiao, 2014).…”

Influences of the concentration and the molar ratio of mixed surfactants on the performance of vesicle pseudostationary phase

“…The addition of organic additives or the dilution of the microemulsion could lead to demulsification of the microemulsion. Additionally, a high concentration of ionic surfactant is needed to ensure microemulsion stability, which would result in a high Joule heat and a long analysis time . Hong et al.…”

“…They compared CTAB/sodium octyl sulfate vesicle and SDS micelles, and results show that the CTAB/SOS vesicles provided a significantly larger elution range and greater methylene selectivity. Tian proved that the hexafluoroisopropanol‐modified CTAB/SDS vesicle system have the widest elution range, which is also much wider than that of hexafluoroisopropanol‐modified SDS micelles, unmodified SDS micelles, and isopropanol‐modified CTAB/SDS micelles.…”