Vesicles prepared with the complex salts dioctadecyldimethylammonium polyacrylates

Area of Science:

• Materials Science
• Polymer Chemistry
• Colloid Science

Background:

• Vesicles are crucial in drug delivery and nanotechnology.
• Controlling vesicle morphology (uni- vs. multilamellar) is key for applications.
• Complex salts offer a route to engineer vesicle properties.

Purpose of the Study:

• To investigate the impact of polymeric counterions on vesicle thermotropic behavior.
• To explore the formation of vesicles using direct complex salt preparation.
• To understand how counterion chain length affects vesicle structure.

Main Methods:

• Preparation of complex salts from dioctadecyldimethylammonium bromide (DODAB) and polyacrylic acids (PAA).
• Sonication of complex salts in aqueous solutions with decanol or tetradecanol.
• Analysis of vesicle thermotropic behavior and size, including comparison with acetate counterions.

Main Results:

• Polymeric counterions (PAA) led to higher multilamellar vesicle content compared to acetate.
• Vesicle morphology was dependent on complex salt concentration and counterion chain length.
• Direct complex salt preparation enabled controlled vesicle composition and properties.

Conclusions:

• Polymeric counterions offer a method to control vesicle lamellarity.
• Direct complex salt synthesis is a viable approach for tailored vesicle production.
• This methodology allows for fine-tuning vesicle properties for specific applications.