1-Methyl-1-octylpyrrolidinium bis(trifluoromethylsulfonyl)imide, CAS: 927021-43-0

Key Applications

Energy Storage and Electrochemical Systems

• Serves as a hydrophobic ionic liquid electrolyte for high‑voltage lithium, sodium, and multivalent metal batteries.
• Enables stable operation in devices requiring wide electrochemical windows and low volatility.
• Used in supercapacitors and hybrid capacitors where long‑chain pyrrolidinium cations improve interfacial stability and suppress parasitic reactions.

Thermal and Chemical Process Media

• Functions as a high‑temperature, non‑flammable heat‑transfer medium due to its thermal robustness and low vapor pressure.
• Suitable for solvent‑free or reduced‑solvent reaction environments in synthetic chemistry, particularly under moisture‑sensitive or high‑temperature conditions.
• Applied as a hydrophobic extraction phase for metal ions, organometallic complexes, and fluorinated species.

Separation Science and Materials Processing

• Utilized in liquid–liquid extraction systems where long‑alkyl pyrrolidinium ILs enhance phase separation and selectivity.
• Acts as a medium for polymer dissolution, modification, and processing, especially for fluorinated or highly hydrophobic polymers.
• Supports membrane fabrication and ion‑transport materials where high hydrophobicity and low miscibility with water are required.

Surface, Interface, and Tribological Applications

• Employed as a boundary‑lubrication additive or neat lubricant in demanding environments, leveraging its thermal stability and low volatility.
• Forms stable, low‑conductivity interfacial layers useful in anti‑corrosion and surface‑modification studies.

Analytical and Spectroscopic Uses

• Serves as a non‑volatile matrix or solvent for spectroscopic measurements requiring minimal background signal.
• Used in electroanalytical research to study ion transport, double‑layer structure, and interfacial kinetics in hydrophobic IL systems.

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