Tunable functionalization of nano-emulsions using amphiphilic polymers

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Chemistry

Background:

• Nano-emulsions offer high loading capacity but face challenges in surface functionalization.
• Traditional surfactants are limited in their ability to anchor reactive groups onto nano-emulsion interfaces.

Purpose of the Study:

• To design and synthesize amphiphilic polymers (APs) for stable nano-emulsion functionalization.
• To demonstrate the successful decoration of nano-emulsion droplets with specific reactive functions.

Main Methods:

• Synthesis of poly(maleic anhydride-alt-1-octadecene) based amphiphilic polymers.
• Characterization of functionalized nano-emulsions using electron microscopy.
• Fluorescence labeling via click chemistry (azide-alkyne cycloaddition) and biotin-streptavidin interactions.

Main Results:

• Amphiphilic polymers effectively stabilized nano-emulsions, with aliphatic chains anchoring in the oil core and PEG chains at the interface.
• Successful decoration of nano-emulsion droplets with rhodamine and fluorescent streptavidin was achieved.
• Demonstrated the potential for targeted functionalization of nano-emulsion surfaces.

Conclusions:

• Amphiphilic polymers provide a stable and versatile solution for nano-emulsion functionalization.
• This method opens new avenues for nano-emulsion applications, particularly in targeted drug delivery systems.