Amphiphile self-assemblies in supercritical CO2 and ionic liquids.

Area of Science:

• Green Chemistry and Materials Science
• Supramolecular Chemistry
• Colloid and Interface Science

Background:

• Supercritical CO2 (scCO2) and ionic liquids (ILs) are recognized as environmentally friendly solvents with tunable properties.
• These green solvents offer significant advantages over conventional solvents (water, oil) for the formation of amphiphile self-assemblies.
• The tunable nature of scCO2 and ILs allows for precise modulation of amphiphile self-assembly properties and structures.

Purpose of the Study:

• To review recent advances in the use of scCO2 and/or ILs as media for amphiphile self-assembly over the past decade.
• To discuss the combination of scCO2 and ILs in the creation of microemulsions and emulsions.
• To highlight future research directions in the field of amphiphile self-assemblies within these green solvent systems.

Main Methods:

• Comprehensive literature review focusing on studies published in the last ten years.
• Analysis of research utilizing scCO2 as a solvent for amphiphile self-assembly.
• Examination of studies employing ILs, individually or in combination with scCO2, for self-assembly processes.

Main Results:

• Amphiphile self-assemblies in scCO2 and ILs exhibit unique properties and structures controllable via solvent characteristics.
• scCO2 demonstrates excellent solvation power and mass-transfer properties beneficial for self-assembly.
• ILs possess the ability to dissolve diverse substances and offer designable properties for specific applications.

Conclusions:

• scCO2 and ILs are highly promising green solvents for creating tunable amphiphile self-assemblies.
• The combination of scCO2 and ILs opens avenues for novel microemulsion and emulsion formulations.
• Further research into these systems holds potential for innovative applications in various scientific fields.