Journal
ACS NANO
Volume 8, Issue 7, Pages 7005-7013Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn501909j
Keywords
dipeptide; self-assembly; emulsion; interface; microcapsules
Categories
Funding
- European Research Council under the European Union/EMERgE/ERC [258775]
- Air Force Laboratory [FA9550-11-1-0263]
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We demonstrate the use of dipeptide amphiphiles that, by hand shaking of a biphasic solvent system for a few seconds, form emulsions that remain stable for months through the formation of nanofibrous networks at the organic/aqueous interface. Unlike absorption of traditional surfactants, the interfacial networks form by self-assembly through a-stacking interactions and hydrogen bonding. Altering the dipeptide sequence has a dramatic effect on the properties of the emulsions formed, illustrating the possibility of tuning emulsion properties by chemical design. The systems provide superior long-term stability toward temperature and salts compared to with sodium dodecyl sulfate (SDS) and can be enzymatically disassembled causing on-demand demulsification under mild conditions. The interfacial networks facilitate highly tunable and stable encapsulation and compartmentalization with potential applications in cosmetics, therapeutics, and food industry.
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