1-Methyl-3-pentylimidazolium bis(trifluoromethylsulfonyl)imide, CAS: 280779-53-5

Key Applications:

Electrochemical & Energy Applications

• Electrolytes for high‑voltage lithium and sodium systems, leveraging the NTf₂⁻ anion’s wide electrochemical window and thermal stability.
• Ion‑conductive media in supercapacitors, where moderate viscosity supports improved ion mobility compared to longer‑chain homologues.
• Redox‑active electrolyte formulations for flow batteries and metal–air systems.

Catalysis & Synthesis

• Reaction media for transition‑metal catalysis, including C–C coupling, hydrogenation, and oxidation reactions requiring non‑volatile, thermally robust solvents.
• Phase‑transfer catalysis, where the C₅ chain provides tunable hydrophobicity for biphasic organic–aqueous systems.
• Stabilization of reactive intermediates in organometallic and heterocycle synthesis.

Materials Science & Polymer Processing

• Solvent and plasticizer for engineering polymers, including polyimides, polyacrylates, and fluorinated materials.
• Template or structure‑directing agent in nanoparticle synthesis and porous material fabrication.
• Processing aid for conductive composites, improving dispersion of carbon nanotubes, graphene, and metal oxides.

Separation & Extraction

• Selective extraction of aromatic hydrocarbons, sulfur species, and metal ions due to strong π‑interaction and coordination capability.
• CO₂ capture and gas separation media, benefiting from NTf₂⁻’s low coordinating nature and the cation’s moderate hydrophobicity.
• Liquid–liquid extraction in bioprocessing, including purification of bioactive compounds and specialty organics.

Lubrication & Surface Engineering

• High‑temperature, low‑volatility lubricant additive for metal–metal and metal–ceramic interfaces.
• Anti‑wear and friction‑reducing films, where the ionic liquid forms stable boundary layers under load.
• Surface treatment agent for corrosion‑resistant coatings.

Analytical & Laboratory Uses

• Non‑aqueous mobile phase modifier in chromatography for enhanced separation of hydrophobic analytes.
• Matrix or dispersive medium in spectroscopic and electroanalytical methods requiring low vapor pressure and high thermal stability.
• Solvent for crystallization studies of organics and coordination complexes.

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