1-Methyl-3-octylimidazolium bis(trifluoromethylsulfonyl)imide, CAS: 178631-04-4

Key Applications:

Electrochemical Systems

• Used as a non‑volatile electrolyte component in lithium, sodium, and magnesium batteries, where the TFSI⁻ anion supports high ionic conductivity and stable SEI formation.
• Serves as an electrolyte or co‑solvent in supercapacitors, improving cycling stability and widening the operational voltage window.
• Employed in electrodeposition of metals (e.g., Al, rare earths) under water‑free conditions.

Catalysis & Organic Synthesis

• Functions as a reaction medium for transition‑metal catalysis, including cross‑coupling, hydrogenation, and oxidation reactions.
• Supports acid‑ and base‑catalyzed transformations where hydrophobicity and low nucleophilicity minimize side reactions.
• Enables biphasic catalysis, facilitating catalyst recycling and product separation.

Separation Science & Extraction

• Applied in liquid–liquid extraction of metal ions, aromatic compounds, and hydrophobic organics due to strong phase separation and tunable solvation.
• Used in supported ionic liquid membranes (SILMs) for selective gas separation, including CO₂, SO₂, and light hydrocarbons.
• Effective in chromatographic stationary phases for separating polar and non‑polar analytes.

Materials Science & Surface Engineering

• Incorporated into polymer electrolytes, ion gels, and composite materials to enhance mechanical flexibility and ionic transport.
• Used as a surface modifier to tune wettability, lubrication, and anti‑fouling properties.
• Serves as a structuring agent in nanoparticle synthesis, stabilizing metal and metal‑oxide colloids.

Thermal & Chemical Stability Applications

• Suitable for high‑temperature lubrication and heat‑transfer systems due to its low vapor pressure and thermal resilience.
• Acts as a stable medium for spectroscopic studies, electrochemical measurements, and high‑temperature reaction monitoring.

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