Propyl-ended hemifluorinated surfactants: synthesis and self-assembling properties

Area of Science:

• Supramolecular Chemistry
• Biochemistry
• Organic Synthesis

Background:

• Hemifluorinated surfactants are effective alternatives to detergents for membrane protein studies.
• Large-scale synthesis of these surfactants has been a significant barrier to their widespread biochemical use.

Purpose of the Study:

• To synthesize novel perfluorohexane-based hemifluorinated surfactants with tunable polar head sizes.
• To investigate the self-assembling properties and chromatographic behavior of these new surfactants.

Main Methods:

• Radical addition of alkenes onto 1,6-diiodoperfluorohexane using AIBN.
• Surface tension measurements, dynamic light scattering, and reversed-phase chromatography.
• Comparison with perfluorinated analogues.

Main Results:

• Successful synthesis of hemifluorinated surfactants with propyl hydrocarbon tips and varying glucose head groups.
• The propyl tip significantly influences adsorption, micellization, and hydrophobic character.
• Surfactants form small, monodisperse aggregates crucial for biochemical applications.

Conclusions:

• The developed synthetic route provides hemifluorinated surfactants in satisfactory yields.
• The propyl tip plays a key role in surfactant properties, unlike the shorter ethyl tip.
• These novel hemifluorinated surfactants are suitable for membrane protein biochemistry due to their self-assembly characteristics.