1-Methyl-3-octylimidazolium perfluorobutanesulfonate, CAS: 905972-83-0

Key Applications:

Electrochemical Systems

• Serves as a hydrophobic, wide‑electrochemical‑window electrolyte component for high‑voltage supercapacitors and advanced battery chemistries.
• Enhances interfacial stability in electrode–electrolyte systems due to the bulky, weakly coordinating perfluorobutanesulfonate anion.
• Supports stable ion transport in mixed‑solvent or solvent‑free ionic liquid electrolytes for long‑cycle‑life devices.

Separation Science and Extraction

• Functions as a tunable, non‑volatile extraction medium for hydrophobic organics, fluorinated compounds, and metal complexes.
• Useful in biphasic ionic liquid–aqueous systems where low miscibility and high thermal stability are required.
• Enables selective partitioning in liquid–liquid extraction workflows for analytical and industrial separations.

Catalysis and Reaction Media

• Provides a thermally robust, non‑flammable reaction medium for acid‑catalyzed, transition‑metal‑catalyzed, and fluorophilic transformations.
• Improves catalyst lifetime and turnover in systems sensitive to moisture or coordinating anions.
• Supports phase‑separated catalysis where product isolation is simplified by the ionic liquid’s hydrophobicity.

Materials Processing and Surface Engineering

• Acts as a structuring agent or solvent for fluorinated polymers, coatings, and surface‑modification processes.
• Facilitates deposition and patterning of hydrophobic or low‑surface‑energy materials.
• Useful in nanoparticle synthesis where controlled nucleation and growth benefit from the ionic liquid’s low volatility and high ionic strength.

Spectroscopy and Analytical Chemistry

• Provides a stable, low‑vapor‑pressure matrix for spectroscopic studies of fluorinated species and ion–solvent interactions.
• Suitable as a reference medium for probing solvation dynamics in hydrophobic ionic environments.

Thermal and Chemical Stability Applications

• Employed in high‑temperature processes requiring non‑flammable, chemically inert ionic media.
• Supports heat‑transfer or thermal‑management research where low volatility and high decomposition thresholds are essential.

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